"Beijing is not a sandstorm, it is a saline-alkali dust storm! Accordingly, sand control should be changed to dust control. " Zheng Baiyu, Secretary General of the Ecological Poverty Alleviation Committee of yenching university Beijing Alumni Association, reported this unique view at the third Sino-Korean seminar on desertification control and grassland protection in 2006.

　　　　Zheng Baiyu has lived in Xilin Gol grassland for many years. After retiring in 1999, he continued to engage in ecological and environmental protection activities in grassland, especially in recent years, he has carried out many years of scientific research and control practice on the harm of saline-alkali dust storms caused by the drying up of Chagannuoer Lake, and has his own unique views on the dust storms.

　　　　The dry Lake Chagannor is the source of dust storms.

　　　　Zheng Baiyu told the Science Times reporter that Chagannuoer Lake with an area of 110 square kilometers is located at the junction of the northern edge of Hunshandake Sandy Land and Xilin Gol Grassland, roughly 600 kilometers north of Beijing. Gogestai River, the source river of Chagannuoer, originates from Hunshandake Sandy Land. In the past two or three decades, the weather has become hotter and drier, and the Gogsitai River has become less and less, and it is often cut off, resulting in the Chagannuoer Salt Lake drying up in the spring of 2002.

　　　　"Since the summer of 2002, I have invited Han Tonglin, a researcher at the Chinese Academy of Geological Sciences, Song Huailong, a researcher at the Institute of Oceanography of the Chinese Academy of Sciences, and other experts, scholars and environmental protection volunteers to conduct on-the-spot investigations and investigations, and found that the dust storm caused by the dry Lake Chagannor is different from the sandstorm we generally know, and the dust it carries contains a lot of saline-alkali substances."

　　　　Zheng Baiyu said that the sight seen in Chagannuoer Lake is shocking: the dry lake basin is full of white saline-alkali dust, which is very fine and loose, and you can raise smoke when you step on it. Salinity will even crystallize in wet places and become saline-alkali ice flowers. Loose saline-alkali dust will be raised when the wind is not very strong. Generally, when the wind is 5 ~ 6, almost pure saline-alkali dust rises locally in the lake basin, and a white saline-alkali smoke covers the lake basin area. Sometimes the saline-alkali dust is rolled into a column of smoke like a tornado and rises very high. When the wind increases to 7 ~ 8, even the dust rolls up and becomes a strong mixed dust storm of saline-alkali dust.

　　　　The sandstorm often mentioned is actually a saline-alkali dust storm.

　　　　"From the situation of Chagan Noel, the sandstorm we are talking about now should be a dust storm in essence, and it is a dust storm rich in saline-alkali substances. The dust of the saline-alkali dust storm is very slight, rising very high, and will enter the atmospheric circulation and be transported to far places. From the path of dust storm, it affects Beijing, Tianjin and North China. Without intervention, the Chagannuoer dry lake basin will also evolve into a desert or sand. "

　　　　Zheng Baiyu pointed out that the research conclusion of Chagannuoer and the understanding of saline-alkali dust storm are quite different from the traditional sandstorm theory in China. The traditional sandstorm theory focuses on the physical parameters such as power source, material source, path, harm, prevention and control, and there are two big indexes that are not involved or not well expressed-the relationship between the particle size of sandstorm inclusions and sandstorm movement, and the chemical composition of sandstorm inclusions and its influence.

　　　　Han Tonglin believes that it is of great significance to determine the particle size of dust entrained by sandstorms. In layman’s terms, it is necessary to determine whether the components of sandstorms affecting eastern China are mainly "sand" or "dust", and to determine the birthplace. "If it is sand, the focus of work is on controlling sand sources; If it is dust, treat the dust source. "

　　　　According to Han Tonglin, the granularity of sand and dust is different. Under the same wind, the finer the particles, the higher they rise and the farther they are transported. "According to the classification method in China, the classification standard of soil mechanical composition is 8 grades, namely gravel, extremely coarse sand, coarse sand, medium sand, fine sand, extremely fine sand, silt and clay. When the wind speed is 15m/s (level 7), the floating distance of 0.1mm fine sand is 4.5 ~ 45m, and the floating height is less than 8m. The floating distance of 0.01mm silt is 45 ~ 450 kilometers, and the floating height is below 800 meters. In the sampling of eight deserts in China, fine sand accounts for 85.6%, medium sand accounts for 11.6%, and the rest is coarse sand. It is unfounded to think that desert is the material source of sandstorms. "

　　　　In addition, the sand in the desert and the dust in the sandstorm are not only a matter of particle size, but also have different movement forms, settlement locations and prevention methods.

　　　　Han Tonglin said: "If we distinguish the size of dust particles in sandstorms, we can find that the current measures to prevent and control sandstorms are inappropriate-for curbing dust storms and controlling dust storm sources, the role of afforestation is limited. It can neither stop dust storms in Beijing, Tianjin and North China, nor is it the best means to restore the ecology of dust source areas, especially in the desert areas that have been formed. It is a waste of national financial resources."

　　　　Song Huailong believes that the current standards and definitions cannot fully reflect other attributes of sandstorms. "Generally speaking, it is not clear what the chemical composition of sand and dust substances is and the impact of these components on people’s lives, social activities and ecological environment. According to the source, movement and environmental impact on human beings and ecology, dust storms can be divided into physical dust storms and chemical dust storms. The toxicological effect of chemical dust storms is a part worthy of special attention. "

　　　　The chemical dust storm has been verified by experiments.

　　　　For the viewpoint that sandstorms in China are chemical dust storms, several researchers provided experimental data.

　　　　A research team of Beijing Normal University made a laboratory analysis on the components of the extraordinarily serious sandstorm in Beijing on March 20th, 2002, and wrote a paper entitled "Saline soil source of dry salt lake of sandstorm in Beijing", saying that "the surface soil of the arid and semi-arid areas where sandstorm passed through including dry salt lake and saline soil is also its main source".

　　　　The Institute of Geology, Chinese Academy of Geological Sciences, analyzed the dry dustfall in Beijing on April 16 this year, and the results were almost the same as those of the research group of Beijing Normal University. According to the results of electron microscope scanning and chemical analysis of water-soluble salts at room temperature, the dust storm in Beijing on April 16 was a chemical dust storm. The results of particle size and content measurement by scanning electron microscope show that 96% of the particles are smaller than 0.074mm, and 4% are smaller than 0.154mm and larger than 0.074 mm. The pH value of dust is 7.9, which is alkaline. The structure, geochemical characteristics and the detection results of water-soluble salt at room temperature show that the composition of dust is basically the same as that of soil samples in dry saline lake basin, but different from that in Hunshandake sandy land and degraded grassland, indicating that the dust in Beijing on April 16 mainly came from dry saline lake basin.

　　　　Saline-alkali desert and chemical dust storm are universal problems in western China.

　　　　Most of China’s salt lakes and dry saline-alkali lake basins are concentrated in the west, and there are 813 salt lakes with an area of nearly 40,000 square kilometers. All the saltwater lakes have more than 100,000 square kilometers, and if the dry lake basins are included, it is much larger than this figure. Some of these saline-alkali dry lake basins are close to North China, Beijing and Tianjin. In addition, there are about 500 million to 600 million mu of saline-alkali land in China, and most of them are distributed in the west of China.

　　　　Zheng Baiyu believes that the phenomenon of saline-alkali desert and chemical dust storm has a profound geographical and geological background. The western part of China is located in the easternmost part of the North Africa-Eurasia desert belt, which is an ancient ocean in ancient times. Since Cenozoic Tertiary, the ancient ocean has begun to shrink back. In the process of evolution, two noteworthy phenomena appeared. First, a large amount of salt in the ocean and saltwater lake remained in the soil during the drying of the lake and sea. Because part of the salt became alkali through alkalization, these soils became saline-alkali soil. Second, large areas of dry sea basins and lake basins have appeared in inland sea and lakes. The sediments in dry sea basins and lake basins are deep, fine and rich in saline-alkali substances. "Some deserts in China are in basins, such as the Taklimakan Desert in the Tarim Basin, which is the result of this evolution. This explains why most sandstorms in China are caused by saline-alkali dust storms. "

　　　　Zheng Baiyu believes that although the chemical dust storm is mainly caused by natural causes, it also has a lot to do with unreasonable human activities, especially the unreasonable use of water resources by human beings, which has an incalculable impact on the environment.

　　　　Controlling chemical dust storm with salt-tolerant pioneer economic plants

　　　　Because the views of researchers such as Zheng Baiyu and Song Huailong have not been recognized by the competent authorities of the state, they have not been supported by the state. However, they started the research and experiment of comprehensive management with their own funds-planting saline-alkali tolerant pioneer economic plant Suaeda salsa to cover the bare grassland saline-alkali spot desert, so as to achieve the purpose of fixing dust and suppressing alkali. The experiment was carried out in Chagannuoer dry lake basin in Ximeng, Inner Mongolia and Angulino dry lake basin in Hebei. After four years of exploration, the experiment has achieved phased results. Based on the experiment of artificial planting of 1000 mu in Chagannuoer in 2003, the coverage area of Suaeda salsa has been expanded to about 10000 mu, of which more than 900 mu have a coverage rate of over 85%. The average plant height is about 60cm；; The average plant weight is 225g g. In this 10000-mu Suaeda salsa coverage area, it can be preliminarily judged that it has basically the effect of dust fixation and alkali suppression, that is, it has shown the ecological control effect of little or no saline-alkali dust in strong wind.

　　　　Several researchers, including Zheng Baiyu, also put forward suggestions for controlling chemical dust storms. First, reform the management system. Preventing and controlling chemical dust storms is a systematic project involving many departments and disciplines, which should be led by an organ that can command, synthesize and coordinate all departments, and is not suitable for a professional department. Second, intensify research, with the national authorities taking the lead in organizing or designating specialized research institutions to carry out research on the evolution of dry lake basins and the prevention and control of chemical dust storms, and collect relevant information as soon as possible; The third is to improve the national monitoring system and testing projects; Fourth, continue the dust source control project; The fifth is to grasp several big projects and experimental projects; Sixth, we are determined to adjust the production mode and production structure of grassland animal husbandry, transform family pastures, implement intensive grassland animal husbandry and build new pastoral areas.

　　Recently, the General Office of the People’s Government of Henan Province issued the "Implementation Opinions on Further Giving Play to the Guarantee Role of Agricultural Credit to Promote the High-quality Development of Agriculture", effectively giving play to the guarantee role of policy-based agricultural credit, effectively solving the problems of financing difficulties and expensive financing in agricultural development, boosting the high-quality development of agriculture and accelerating the construction of a strong modern agricultural province.

　　At the same time, as the only provincial policy agricultural credit guarantee institution in the province, Henan Agricultural Credit Guarantee Co., Ltd. (hereinafter referred to as Henan Agricultural Company) handed over a brilliant "Thirteenth Five-Year Plan" report card to solve the financing problem of agricultural moderate-scale business entities.

　　Give play to the role of policy guarantee to help agriculture

　　Henan, as a major grain province, undertakes the political task of ensuring national food security. Based on the policy-oriented functional orientation, Henan Nongdan Company has taken the initiative to shoulder the heavy responsibility of ensuring food security and focused on the "bumper harvest burden" pure credit guarantee products developed by high-quality grain industry. At present, it has guaranteed loans of 9.924 billion yuan for 21,500 grain-scale business entities in the province, saving financing costs of more than 397 million yuan.

　　In huixian city, Wang Xiangkun’s seed company is mainly engaged in the breeding and purchase and sale of improved wheat varieties. After more than ten years, he lamented: "Now the national policy of benefiting farmers is getting better and better, and the biggest feature is that the financing cost is reduced. With the loan guarantee of Henan Agricultural Bank, compared with before, this year, it can save nearly half of the interest. Not only that, I thought that the loan process affected by the epidemic would be more troublesome and long-term. I didn’t expect them to complete the loan in less than a week. "

　　As an important means to solve the financing problem of agricultural business entities, stimulate their endogenous vitality, and an important tool to incite financial capital and guide social capital to invest in agriculture, Henan Agricultural Bank Company has always adhered to the policy orientation, focused on serving agricultural business entities with moderate scale, and actively solved the problems of difficult and expensive agricultural financing.

　　By the end of 2020, the accumulated guarantee scale was 27.831 billion yuan, ranking first in the national agricultural burden system. Carry out business in 133 agricultural counties in the province to achieve full coverage of agricultural counties; The compensation rate is lower than the average level of the national agricultural burden system.

　　In the process of realizing this achievement, Henan Nongdan Company has made many innovative explorations.

　　In terms of organizational guarantee, according to the requirements of the state, the provincial party committee and the provincial government on the management mode of "light structure, verticalization and flattening", and the idea of "combination of various sectors, multi-channel risk sharing and information-based big data support", an agricultural credit guarantee system covering the whole province was constructed, and the business achieved full coverage of agricultural counties.

　　In the top-level design, innovate the mechanism of financial and financial linkage to support agriculture. By the end of December 2020, it had established cooperative relations with 78 banks, carried out business cooperation with 8 municipal and county government financing guarantee institutions, and carried out business cooperation with 102 counties in accordance with the "political and banking burden" model.

　　In terms of product innovation, we have jointly developed a series of pure credit products with characteristics such as bumper harvest burden, animal husbandry burden, market burden, etc., around ten dominant agricultural products, such as high-quality special wheat, peanuts, grass and livestock, forest fruits, vegetables, flowers and trees, tea, edible fungi, Chinese herbal medicines and aquatic products, and created a "Yunong burden +N" product system, which provides services for agricultural moderate-scale business entities, village collective economic organizations, high-quality farmers and entrepreneurs returning home.

　　In terms of micro-credit for poverty alleviation, by the end of December 2020, the accumulated guarantee scale was 8.389 billion yuan, which drove more than 180,000 poor households to increase their income. In lankao county, Tuling Village and Guandong Village were selected as the pilot projects, and the model of "Xintiandi Cooperative+Village Collective Economic Organization+Farmers" was explored, and innovative service products were developed in line with the characteristics of traditional rural collective economic organizations. In October 2020, the first loan guarantee service of 750,000 yuan from rural collective economic organizations in Henan Province officially landed in Tuling Village Stock Economic Cooperative.

　　Digital transformation has achieved initial results.

　　Wang Laiqing, a guarantee customer in Xinyang City, Henan Province, can apply for the project, sign the contract, pay the fee by scanning the code (one single item and one yard), inquire about the balance under guarantee, and remind the due repayment online without leaving home. At the same time, you can also enjoy free value-added services such as industry information, live broadcast of agricultural technology training cloud, online answering questions of agricultural experts, business and legal consultation, and truly realize "one-click understanding, one-click inquiry and one-stop service".

　　In terms of digital transformation, the focus is on "12345", that is, building a platform ("Smart Agricultural Load" cloud platform), improving two capabilities (digital innovation capability and digital operation capability), and realizing four unifications (unified portal access, unified mobile application, unified PC application and unified big screen display) around three centers (business center, approval center and data center).

　　At present, Henan Agricultural Load Company has become the only province in the national agricultural load system to handle the whole process of guarantee business online. At the same time, make full use of financial technology such as big data, artificial intelligence and biometrics to promote the deep integration of artificial intelligence technology and guarantee business.

　　Drawing the "14th Five-Year Plan" to Promote the High-quality Development of Agriculture

　　Draw the 14th Five-Year Plan and start a new journey. 2021 is the 100th anniversary of the founding of the Party and the first year of the 14th Five-Year Plan. Henan Agricultural Bank has compiled the 14th Five-Year Plan, built a "one body and two wings" guarantee system, improved the service capacity of financing guarantee, fulfilled the requirements of the Opinions of the provincial government, and formulated supporting measures such as business operation rules, risk fund management measures, discount management measures, pilot work plan and local government cooperation agreement.

　　Strengthen cooperation with banking financial institutions and county-level governments, build a new cooperation model of "government and bank bearing", establish a "1+N" guarantee product system covering all agricultural sub-sectors in the province step by step by county, and select one leading agricultural industry and two key agricultural support with advantages and characteristics in each county. At the same time, comprehensive use of information, intelligent means, big data, cloud computing and other technologies will improve service quality and efficiency, enhance the level of intelligent risk management and control, and steadily expand the scale of agricultural credit guarantee in Henan Province.

　　"Henan Agricultural Bank will focus on the decision-making arrangements of the provincial party committee and the provincial government, base on the policy-oriented functional orientation, take the party’s political construction as the guide, and plan the development objectives and tasks of the 14th Five-Year Plan in a systematic and scientific way according to the concept of market-oriented operation, continuously improve its business expansion ability, do a good job in effectively connecting the achievements of consolidating and expanding poverty alleviation with rural revitalization, and help Henan’s agricultural high-quality development and shoulder the heavy responsibility of stabilizing food security with finance, so as to provide a good start for Henan’s economic and social development during the 14th Five-Year Plan. The person in charge of the company said.

　　Beijing Agricultural College pays attention to the advantages of urban agricultural talents, technologies and platforms, promotes the coordinated development strategy of Beijing-Tianjin-Hebei and the rural revitalization strategy as a whole, and carries out technical extension services around the needs of sweet potato breeding and planting in vast areas of Hebei to promote the green, high-quality and high-yield development of sweet potato industry.

　　I. Basic information

　　Hebei province is the main producing area of sweet potato in China, with a long planting history. In recent years, the planting area has stabilized at about 2 million mu. Because of drought and flood, sweet potato is called a hard-core crop by growers. However, there are still some problems in the old sweet potato planting areas in Hebei Province, such as variety degradation, extensive planting techniques, pests and diseases caused by repeated cropping for many years and so on. Since 2006, the sweet potato breeding and planting team of the College of Plant Science and Technology of Beijing Agricultural College has gone deep into the Beijing-Tianjin-Hebei region, adhered to the close combination of field and classroom, theory and practice, research and development and popularization, innovation and service, and brought a lot of practical information and technology to sweet potato growers, covering 11 prefecture-level cities and more than 60 counties such as Baoding, Langfang, Chengde and Zhangjiakou in Hebei, and established a stable service cooperation relationship with Shuanghua Agricultural Products Planting Professional Cooperative in Gu ‘an County of Langfang, which radiated Beijing-Tianjin-Hebei. Zhao Bo, the team leader, was awarded as "Advanced Individual in Rural Work in Beijing (2017-2021)".

　　Second, the implementation progress

　　(1) Demonstration and popularization of new sweet potato varieties. For a long time, the first generation varieties accounted for about 50%, the second generation and the third generation varieties accounted for about 30% in the production of sweet potato in the vast area of Hebei, and the variety upgrading was lagging behind, which could not meet the demand of sweet potato producers for economic benefits or consumers for fresh sweet potato quality, thus affecting the development of sweet potato industry in this area. Since 2016, the sweet potato team has successively introduced the fifth-generation sweet potato varieties, such as Pushu 32, Yanshu 25, Longshu 9 and Shangshu 19, in Langfang, Chengde, Zhangjiakou and Tangshan, which made the local sweet potato variety structure jump from the first generation to the fifth generation at that time, the yield level was improved, the quality was obviously improved, which met the market requirements for the taste and appearance of fresh foods, the income of growers was guaranteed, and the introduced new varieties were obtained.

　　(two) demonstration and popularization of cold bed seedling technology. The method of raising seedlings with fire resistance is a common method of raising seedlings of sweet potato in North China. The seedbed is simple in structure and convenient to build. Coal, straw and firewood can be used as heating materials, and it is easy to obtain materials, but there are also problems of high energy consumption and serious environmental pollution. However, the method of multi-layer covered cold bed seedling raising in solar greenhouse or small and medium shed can meet the temperature requirements of sweet potato seedling raising without heating, eliminating the consumption of fuel and electric energy, greatly reducing the cost, and eliminating the pollution of coal burning and burning straw to the atmospheric environment, which has ecological benefits of energy saving and emission reduction. The sweet potato team took the lead in popularizing advanced cold bed seedling raising technology in Gu ‘an County of Langfang, lulong county of Qinhuangdao, yutian county of Tangshan and other places, and implemented systematic improvement in facilities selection, seedbed construction, seed potato stacking, soil covering thickness, temperature control, disease control and other aspects, so that the weight of 100 potato seedlings was increased from 250 grams to more than 500 grams, reaching the standard of strong seedlings, the seedling quality was significantly improved, and the energy consumption and pollution were significantly reduced.

　　(3) Vigorously support industrialized seedling raising. Industrial seedling raising is an important guarantee for obtaining excellent provenance. For a long time, most of the sweet potato seedlings in Beijing-Tianjin-Hebei region were propagated by farmers for their own use or transferred from neighboring provinces. There are some problems such as relatively backward breeding technology, uneven quality of potato seedlings, untraceable production losses caused by fake and inferior potato seedlings, and uncertain supply time. Focusing on the cultivation of excellent seed potato seedlings, the sweet potato planting team started with rapid propagation technology and supported the new agricultural management entities to implement factory seedling raising. In 2019, we began to cooperate with Shuanghua Agricultural Products Planting Professional Cooperative in Gu ‘an County, Langfang, to establish a standard chemical plant seedling base, carry out large-scale seed potato seedling cultivation, and provide service guidance from production management, technical training and market development. In the past three years, the annual output of high-quality sweet potato seedlings has reached about 35 million, and the application area has reached more than 12,000 mu. The application scope includes Beijing-Tianjin-Hebei, Henan, Hubei, Hunan, Liaoning, Inner Mongolia, Shandong, Shanxi, Shaanxi, Xinjiang and other vast areas, effectively reducing costs, effectively curbing the phenomenon of indiscriminate introduction, proliferation and sales of seed potato seedlings in the market, and making sweet potato growers affordable and comfortable to use.

　　III. Main Features and Effects

　　(A) technology research and development and technology promotion are closely integrated. Scientific research "originates from production and is used for production". The sweet potato breeding and planting team insists on demand-oriented and problem-oriented, so that tasks come from production, demand, market, scientific research results go to production, farmers and enterprises, so as to accelerate the transformation of agricultural scientific and technological innovations into real productive forces and write the "Sweet Potato Paper" on the land of Yanzhao. For more than ten years, while breeding marketable sweet potato varieties, the sweet potato team has successively promoted and applied more than 10 green, high-yield and high-efficiency production supporting planting management technologies such as virus-free seed potato rapid propagation, high-temperature healing seed potato storage, cold bed laying seedlings, seedling bed soil disinfection, etc. around sweet potato stem tip virus-free and improved seed breeding in vast areas of Hebei, with an average annual planting scale of over 10,000 mu, thus escorting the sweet potato industry to improve quality and efficiency. For example, in view of the safe storage of seed potatoes in winter, the storage technology of high-temperature healing seed potatoes is adopted to reduce the rotten rate of seed potatoes and improve the vitality of seed potatoes; The soil disinfection method combining sunlight, irrigation and chemicals effectively eliminated the soil-borne diseases of sweet potato; Adopting the technical process of virus-free sweet potato two-stage seedling breeding, the tissue culture seedlings directly produce the original seeds, which improves the quality by one level, advances the time by one year, reduces the production times of seed potatoes in the soil, and makes the seedlings cleaner.

　　(2) Online and offline technical services are not dropped. At the beginning of 2020, there was a once-in-a-century epidemic in COVID-19. For a long time, although the flow of people was restricted, the scientific and technological service activities of the expert team did not stop. According to the time, place and classification guidance, they worked "continuously" and served "continuously", which minimized the impact of the epidemic on agricultural production and ensured the smooth flow of agricultural technology services in the last mile. Especially in the early stage of the outbreak, faced with various uncertain factors, the expert team actively provided online guidance to 21 sweet potato seedling enterprises in Chengde, Langfang, Tangshan and Baoding through WeChat and telephone, helping to solve the technical problems of large-scale sweet potato seedling farmers in time. In March, 2020, Langfang area issued blue warning of gale for many times, and the expert team immediately telephoned 12 seedling farmers in Xueputou Village, Gu ‘an County to reinforce 110 plastic greenhouses and 4 solar greenhouses, thus avoiding losses in time.

　　(3) Supporting new agricultural business entities and highlighting the effect of linking agriculture with agriculture. Compared with traditional small farmers, new agricultural business entities, such as large-scale farmers, family farms, farmers’ professional cooperatives and leading enterprises in agricultural industrialization, are large-scale, specialized, intensive and market-oriented, which have unique advantages in linking agriculture with agriculture and can give consideration to both economic and social benefits. In the process of technology promotion, the sweet potato breeding and planting team has signed a technical service agreement with Shuanghua Agricultural Products Planting Professional Cooperative in Gu ‘an County of Langfang since 2019, forming a working mode of interest community of "expert team+village collective+cooperative+farmer". Through the effective mechanism of benefit sharing and risk sharing, the annual output value of the cooperative is supported to reach 3-5 million. Under the guidance of experts’ regular service, the cooperative nursery bed is stable at 30,000-50,000 square meters all the year round, which can directly provide 50 stable jobs every year, with 100 workers in busy farming hours, and at the same time, radiation drives more than 1,000 employees in surrounding planting, deep processing and logistics, and gradually forms a sweet potato industrial chain integrating seedling raising, planting, storage and sales.

　　(4) Go deep into the fields and send the technology to the hearts of farmers. The promotion and upgrading of new sweet potato varieties should be closely combined with the promotion of planting techniques to achieve higher efficiency. In view of the fact that there are few young and middle-aged laborers in rural areas and the elderly have become the main force of agricultural production, the expert team explored the technology of close planting and shallow planting of sweet potato, which controlled the shape of sweet potato by adjusting the planting density, and increased the number of potato nodes by planting sweet potato seedlings in the soil, thus achieving the purpose of increasing yield and reducing labor intensity. Of course, the promotion of new technology is a slow process, limited by traditional habits, knowledge structure and cognitive level. Older growers don’t recognize new planting technology, and often experts just leave after class, and farmers still do it in their own way. In order to verify the outstanding effect of the new technology, the team of experts intervened in the whole process of sweet potato production, and demonstrated and guided the whole process from sweet potato seedling raising to mature harvesting, guiding farmers to change their concepts with facts and reality. In the past 10 years, team members have gone to the countryside for more than 1,500 days, and trained more than 300 farmers every year on average. By promoting new varieties and technologies, many villagers who are unable and unconditional to go out for employment have realized income generation at their doorsteps.

　　Fourth, experience and enlightenment

　　(1) Build a platform. The development of technology extension service can not be separated from the corresponding work platform. The school has incorporated the sweet potato planting and breeding promotion into the overall layout of serving the coordinated development of Beijing, Tianjin and Hebei, and established poverty alleviation workstations, professor workstations, doctoral workstations and technology transfer sub-centers in Chengde, Zhangjiakou and Tangshan, respectively, to promote the collaborative interaction among universities, research institutes, local governments and new agricultural business entities, and promote the integration of Industry-University-Research through the expert team’s on-site service, so as to make the promotion service site a gathering place for talents of agriculture, rural areas and farmers, an experimental field for scientific and technological innovation, and an incubator for the application of achievements.

　　(2) Based on demand. To carry out technology promotion, we should consider whether enterprises need it, whether farmers accept it, and whether the market supply and demand are reasonable, so as to truly solve the pain points in the agricultural industry. To this end, even if you spend more time on research, the so-called "sharpening the knife without cutting the wood by mistake." All the technologies around sweet potato stem tip detoxification and improved seed breeding are born in response to production problems and should be promoted by market benefits. If they are not combined with production and ignore market feedback, even advanced technologies will have no value of popularization and application.

　　(3) carry forward feelings. The main battlefield of technology popularization is the grass-roots front line, which is often arduous and backward. To be effective, the promotion work needs to run around mountains, ravines and fields all the year round. It is consistent with a kind of dedication, selfless feelings and selfless feelings. If you always consider the gains and losses, you can’t do the promotion work well. Making friends with farmers, the sweet potato planting team can not only sit and talk, but also act. Together with sweet potato growers, they are sweating in the hot sun, braving the heat, winning the trust of farmers, promoting stable and lasting cooperation and achieving a win-win situation.

　　V. Plans for further promotion

　　(1) The promotion and demonstration of new sweet potato varieties are uninterrupted. Continue to strengthen the promotion of new sweet potato varieties in Chengde, Tangshan, Zhangjiakou and Langfang, Hebei Province, and radiate to Jinghai, Tianjin, Nanyang, Henan Province and Yiyuan, Shandong Province.

　　(2) The demonstration and promotion of cold bed seedling raising technology of sweet potato is uninterrupted. The system integrates various technologies such as seedling site selection, seedbed construction, seed potato stacking, soil covering, pest control, environmental condition control, seedling quality control, seedling collection and so on, and continuously improves the popularization and demonstration system of sweet potato cold bed seedling technology to enhance the scale of sweet potato cold bed seedling in Hebei Province.

　　(3) Continuous technical training and consultation. Fulfill the duties of scientific and technological workers, strengthen the responsibility of scientific and technological workers, insist on putting their feet in the soil and writing papers on the earth, go to villages and households to guide improved varieties and good methods, disseminate technical essentials, cultivate a group of soil experts, Tian Xiucai and new farmers, and ensure that the "standardized" application of sweet potato breeding and planting technology is effectively transmitted.

In the first quarter, the macroeconomic data of China will be released soon, and a number of the latest leading data show a continuous upward trend, especially in March, the upward trend has obviously accelerated.

55.52%, which is the comprehensive operating rate of construction machinery in March this year. This figure is not only greatly improved compared with January and February, but also the best data since December last year. The Sany "Excavator Index" from the Internet platform of Shugen Internet Industry shows that in the first quarter of this year, the national construction machinery and equipment were "busier".

From a regional perspective, 25 provinces are "speeding up and running", and the operating rate has reached a new high this year. The operating rates of Anhui, Jiangxi, Hubei, Zhejiang and Sichuan rank among the top five in China, all exceeding 70%.

Not only the current projects are in full swing, but also new investments are constantly landing. Since the beginning of this year, the project investment has been pressed by the "fast forward button". According to the data of the National Information Center, the project investment heat index increased by 0.6% year-on-year, and it increased by 5.8% year-on-year in March, showing an accelerated growth momentum.

The manufacturing sector is more prominent, 1-mdash; In February, the investment enthusiasm index of manufacturing industry increased by 13.3% year-on-year, and rose rapidly to 40.6% in March, much higher than the overall investment enthusiasm growth rate in China. The performance of investment in equipment renewal and transformation is particularly bright. In March, the investment enthusiasm related to equipment renewal, transformation and upgrading in the manufacturing sector increased by 65.5% year-on-year, which exceeded the growth rate of the overall investment enthusiasm in manufacturing by nearly 25 percentage points.

Xing Yuguan, Deputy Director of Big Data Analysis Department of Big Data Development Department of National Information CenterThe growth rate of investment in the manufacturing sector is higher, especially the investment fever related to equipment renewal, transformation and upgrading, which reflects that the willingness of manufacturing enterprises to improve quality and efficiency has been significantly enhanced under the favorable policies of promoting a new round of large-scale equipment renewal and accelerating the development of new quality productivity in the near future.

In the first quarter, major projects in various parts of China were accelerated, and investment in industries, infrastructure and people’s livelihood was significantly accelerated. Experts said that this not only laid a solid foundation for steady economic growth, but also reflected the important role of government investment in laying the foundation, benefiting the long-term, supplementing shortcomings and adjusting the structure, which will provide strong support for high-quality development.

Stabilize and improve, and the business vitality of enterprises will continue to recover.

A number of leading data show that the business vitality of enterprises is rapidly stabilizing and improving, the supply and demand situation of SMEs continues to improve, and domestic demand maintains a good recovery momentum.

According to the heat index of industrial parks in the National Information Center, the index increased by 15.5% year-on-year in the first quarter of this year, achieving rapid growth, including a year-on-year increase of 22.7% in March, indicating that the production vitality of industrial enterprises continues to climb, and the demand for employment of enterprises continues to be strong.

Xing Yuguan, Deputy Director of Big Data Analysis Department of Big Data Development Department of National Information CenterSince the beginning of this year, with the efforts of various policy measures, many indicators reflecting the vitality of enterprises’ production and operation are better than the same period of last year, especially industrial production is continuously improving, and the operational vitality of entrepreneurial enterprises and technological innovation enterprises is also constantly improving.

Not only the business vitality of enterprises continues to improve, but also the supply and demand situation of small and medium-sized enterprises continues to improve. According to the data of China Small and Medium Enterprises Association, the development index of small and medium-sized enterprises in the first quarter was 89.3, up 0.2 points from the previous quarter. Experts believe that small and medium-sized enterprises are more sensitive to market demand and economic recovery, and the rebound of the development index of small and medium-sized enterprises further reflects the sustained recovery of enterprise confidence, the further enhancement of endogenous motivation, and the more steady pace of high-quality development of small and medium-sized enterprises.

Liu Fang, Director of Market and Price Research Institute of China Macroeconomic Research Institute.With the accelerated recovery of production and the sustained efforts of macro-combination policy, the vitality of production and operation of enterprises continues to improve, the supply and demand situation of small and medium-sized enterprises continues to improve, and domestic demand maintains a good recovery momentum. China’s sustained economic recovery is increasing.

The policy of expanding domestic demand is intensively introduced, and online and offline consumption is active.

Since the beginning of this year, from the central government to the local government, the policy of expanding domestic demand has been intensively introduced, and the "popularity" in the consumption field has become more and more prosperous. Experts said that the offline consumer passenger flow has increased significantly, and online logistics orders have accelerated.

"Popularity" is an important perspective to observe the offline consumption fever. According to the analysis of people flow data by the National Information Center, since the beginning of this year, the consumption of offline residents in China has become more active. The heat index of people flow in offline business districts increased by 9.9% in the first quarter compared with the same period of last year, including an increase of 17.7% in March. Regionally, in March, the heat index of 31 provinces all achieved positive growth, with Guizhou, Tianjin, Anhui, Henan and Hainan provinces having the fastest growth rates.

In Guizhou, the "Village Super" and "Village BA" which were popular all over the network last year ushered in the opening season of the new year. In March, only Rongjiang and Taijiang counties attracted nearly one million tourists, driving the comprehensive tourism income to exceed one billion yuan.

Guizhou Huishui Tourist Li XingyuI arrived here at 10 o’clock this morning, and I felt very shocked for the first time. The scene was a 5D experience, which was really different from what I saw on my mobile phone and computer.

Zhou Jie, a tourist from Huaihua, Hunan.The atmosphere here is very grounded. Last year, I arrived here for the "Village BA" finals, and I have experience. If I came late, I would have no place to sit.

Offline consumption is becoming increasingly active, and online consumption is equally hot. The reporter’s comprehensive online consumption platform data analysis shows that the number of platform consumption orders in the first quarter increased by more than 30% year-on-year. The consumption potential of second-and third-tier cities has been further released, and the consumption market in fourth-tier cities and county rural areas in generate has become more and more dynamic.

Liu Qi, Dean of JD.COM Institute of Consumer and Industrial Development.With a series of national policies to promote consumption, the trade-in service has been welcomed by more and more consumers. In March, the trade-in turnover of household appliances increased by more than 130% year-on-year, especially for household goods. Since the launch of self-related services, the turnover has increased by more than 6 times.

There are also retail enterprises that feel full of vitality. In the first quarter, the average comprehensive prosperity index of China retail industry was 50.7%, up 0.4 percentage points year-on-year. Among them, the passenger flow index of commodity management enterprises increased by 0.6 percentage points year-on-year. The total physical sales index of e-commerce enterprises increased by 1.1 percentage points year-on-year.

Zhang Lijun, President of China Business Federation.The comprehensive prosperity of China’s retail industry started well, and the retail business continued to pick up, fully recovering to the pre-epidemic level. The offline passenger flow has increased significantly, online logistics orders have accelerated and the service scale of e-commerce has continued to expand. China’s retail prosperity index has been in the expansion range for one year in a row, and the year-on-year growth rate in the first quarter of this year has obviously accelerated. In the future, the commodity retail market is expected to achieve steady growth.

Just two days ago, the Ministry of Commerce and other 14 departments jointly issued the "Action Plan for Promoting Trade-in of Consumer Goods", which promoted the trade-in of automobiles and household appliances through financial subsidies, and promoted the "rejuvenation" of home improvement and kitchen and bathroom, and the consumer market continued to be active.

(CCTV reporter Wu Hao, Chen Wei, Wang Jialin)

　　[car home Industry] See you in car home E Week to learn about the major events in the auto industry this week. This week can be called "Cooperation Week". Huawei and Changan signed a memorandum of investment cooperation, Geely joined Weilai’s power exchange alliance, BMW and Mercedes-Benz also joined hands to set up a joint venture company, and Jianghuai Automobile and Huawei signed the Cooperation Agreement on Intelligent New Energy Vehicles. In particular, Huawei’s strategic adjustment in the automobile business is constantly fermenting in the car circle.

　　At the same time, in December, major car companies announced their sales data in November. Ideally, 41,030 vehicles will be delivered in November, reaching the annual sales target ahead of schedule; The number of M7 vehicles in the world exceeded 100,000, and the delivery volume of 11 vehicles exceeded 15,000. Tucki delivered more than 20,000 vehicles for two consecutive months, and the delivery volume of zero-running in November also reached 18,508 vehicles, up 130% year-on-year … What other hot news are there this week? Let’s take a look.

---

● Jianghuai and Huawei signed the Cooperation Agreement on Intelligent New Energy Vehicles.

● Mercedes-Benz and BMW cooperate to build a super charging network in China.

● Get through the C-end /B-end market Geely joins Weilai Power Exchange Camp.

● Changan Automobile and Huawei signed a memorandum of investment cooperation.

● Research and development of HarmonyOS version of navigation Gaode map/Huawei reached a cooperation.

● Tesla Model Y price adjustment

● FAW Toyota limited time purchase tax subsidy of 5,000 yuan.

● The price equity adjustment of Extreme Vietnam 01 was directly reduced by 30,000 yuan.

● Chen Siying is the President of the Automobile Division of Xingji Meizu Group.

---

■Jianghuai and Huawei signed the Cooperation Agreement on Intelligent New Energy Vehicles.

　　On December 1st, JAC announced that it had signed the Cooperation Agreement for Intelligent New Energy Vehicles with Huawei Terminal Co., Ltd.. In order to ensure that the cooperative vehicle will be listed on time according to the agreed plan, both parties agree to divide the work and cooperate with each other. At the same time, both parties promise to fully guarantee the investment of resources in all stages of the cooperative project under this agreement according to the agreed responsibilities and division of labor, including but not limited to human resources, production line resources, supply chain resources and funds.

　　Specifically, Jianghuai Automobile is responsible for the product development of the cooperative models between the two parties, and Jianghuai Automobile is responsible for building a production base to realize the delivery of the cooperative models. Jianghuai Automobile agrees that Huawei Terminal or its designated third party will provide exclusive sales services for cooperative vehicles on a global scale. In order to achieve efficient, convenient and high-quality delivery, Huawei Terminal and JAC will jointly build a "user-centered" service system around the cooperative models.

■ Mercedes-Benz and BMW cooperate to build a super charging network in China.

　　On November 30th, Mercedes-Benz (China) Investment Co., Ltd. and BMW Brilliance Automobile Co., Ltd. announced the signing of a cooperation agreement. The two parties will set up a joint venture company in China with a share ratio of 50:50 to operate a super charging network in the China market, so as to jointly meet the growing demand of China customers for luxury charging services.

　　By the end of 2026, the joint venture company plans to build at least 1,000 super charging stations with advanced technology and about 7,000 super-charged piles in China. The first batch of charging stations are planned to start operation in key new energy automobile cities in China from 2024, and the subsequent construction of charging stations will also cover other cities and regions in China.

　　The charging network of the joint venture company will be open to the public. According to the plan, customers of Mercedes-Benz Group and BMW Group can enjoy exclusive exclusive services, such as plug-and-play charging, online booking and other seamless digital charging experiences. In addition, the joint venture company plans to purchase renewable energy power if conditions permit, so as to provide China customers with a sustainable luxury charging experience. At present, the establishment and operation of the joint venture company are subject to the approval of relevant regulatory authorities.

■ Get through the C-end /B-end market Geely joins Weilai Power Exchange Camp.

　　On November 29th, Zhejiang Geely Holding Group Co., Ltd. ("Geely Holding") and Weilai Holding Co., Ltd. ("Weilai") signed a strategic cooperation agreement on battery replacement in Hangzhou. The two parties will cooperate comprehensively in various fields such as battery replacement standards, battery replacement technology, construction and operation of battery replacement service network, research and development and customization of battery replacement vehicles, battery asset management and operation, and Weilai will enter the field of operating vehicles in addition to TOC.

　　Through the mode of "co-investment, co-construction, sharing and co-operation", the two sides will effectively cooperate with existing stations and new stations to build a larger and unified power exchange network. The two sides will work together to build two major power exchange standard systems of "private cars" and "operating cars" in China, so as to provide more convenient, perfect and secure services for users with different needs. The symbolic significance of Geely Holding’s cooperation with Weilai is that NIO Power’s power exchange system will soon move from to C to serve both ends of B and C, and serve Weilai and other brands at the same time. NIO Power’s profit can be expected, and it will even begin to feed Weilai.

　　In the future, Weilai power exchange station can not only serve passenger cars of Weilai, Chang ‘an, Geely and other brands, but also serve operating vehicles. The power exchange station will become a public infrastructure in the era of intelligent electric power. At the same time, with the joint efforts of various enterprises, power exchange will become the mainstream energy supply mode in the industry, the energy supply experience of electric vehicle users will be greatly improved, and the power exchange station will be better developed.

■ Changan Automobile and Huawei signed a memorandum of investment cooperation.

　　On November 26th, both Huawei and Changan Automobile announced that they signed the Memorandum of Investment Cooperation in Shenzhen on November 25th. After negotiation, Huawei plans to set up a new company, focusing on the R&D, production, sales and service of intelligent driving system and incremental components of intelligent networked vehicles.

　　According to the memorandum, Huawei intends to integrate the core technologies and resources of smart car solutions business into the new company. Changan Automobile and related parties will intend to invest in the company and support the future development of the company together with Huawei. The new company will strive to become a world-class leader in the automotive intelligent driving system and parts industry, and as an open platform serving the automotive industry, it will open its equity to investors such as existing strategic partners, car companies and strategic car companies, and become a company with diversified equity. The new company will continue to serve customers with high quality, and work with partners to promote the innovation and leadership of smart car technology and promote the prosperity and development of the automobile industry.

　　On November 28th, at the (|) listing conference, Yu Chengdong, the chairman of Huawei’s smart car solution BU, said that Huawei had issued an invitation for equity opening to Cyrus, Chery, Jianghuai and BAIC, and hoped that China FAW Group would join.

■ Research and development of HarmonyOS version of navigation Gaode map/Huawei reached a cooperation.

　　A few days ago, Gaode Map and Huawei held a signing ceremony for HarmonyOS cooperation, which will officially launch the development of native applications in HarmonyOS based on HarmonyOS NEXT. Gaode became the first enterprise in the field of map navigation to launch the research and development of the HarmonyOS version of App.

　　As a leading travel and location information service provider in the industry, Gaode Map has previously established a comprehensive and profound cooperative relationship with Huawei. For example, as early as 2020, Gaode developed lane-level navigation using Beidou satellite navigation system based on Mate series mobile phones, which is also the first high-precision positioning navigation service for landing smartphones in the industry; Since then, it has also adapted and supported lane-level and immersive navigation services for Huawei HiCar Zhixing platform.

　　Since October 2023, Gaode Map has invested a large number of architects and R&D personnel, working side by side with Huawei HarmonyOS engineers, deeply cooperating, actively discussing the technical architecture design of HarmonyOS, and doing pre-order technical verification for the official start of development; On October 24th, the Programmer’s Day, Gaode Map also held a kick-off meeting for all staff of HarmonyOS Project to boost morale and enhance cooperation confidence, and promised that more R&D resources would be continuously invested with the subsequent development of the project.

■ Tesla Model Y price adjustment

　　It was learned from Tesla’s official that the price of Tesla Model Y all-wheel drive long-life version rose to RMB306,400. At the same time, the official launched the latest sales policy, details are as follows:

　　1. From now on, purchase Model 3/Y and deliver it this quarter. Customers who meet the application qualification can apply for preferential interest rate loan scheme, with the annual rate as low as 2.75%. 2. From now on, purchase the existing Model 3/Y rear-wheel drive car and deliver it this quarter, and purchase the corresponding auto insurance through cooperative insurance institutions. On the basis of the above preferential interest rate loan scheme, you can enjoy a limited-time insurance subsidy of 8,000 yuan.

　　Since October this year, Tesla Model Y has made price adjustments one after another. On October 27th, Tesla raised the price of Model Y high-performance models by 14,000 yuan, and the adjusted price was 363,900 yuan. On November 9 th, the price of the long-life version of Model Y was raised by 2,500 yuan, and the adjusted price was 302,400 yuan. On November 14th, the rear-wheel drive version of Model Y was raised by 2,500 yuan, and the adjusted version was 266,400 yuan. On November 21st, the Model Y all-wheel drive long-life version was raised by 2,000 yuan, and the adjusted version was 304,400 yuan. This time, the price of this model continues to increase by 2,000 yuan. At present, the expected delivery cycle of this car is 6-8 weeks.

■ FAW Toyota limited time purchase tax subsidy of 5,000 yuan.

　　On December 1st, FAW Toyota launched a large number of terminal preferential activities. From December 1 ST to 18 th, some FAW Toyota models were purchased (referring to all FAW Toyota models, but excluding imported cars, new energy and unconventional large customers), and the time-limited purchase tax subsidy was 5,000 yuan. In addition, you can enjoy low down payment, zero interest rate, 6000 yuan courtesy, and lifetime warranty of dual-engine battery.

　　FAW Toyota, such as SUV Rongfang, Crown Lu Fang, Corolla Ruifang, MPV Grivia, as well as cars Corolla, Asian Dragon and other models are all within the preferential range.

■ The price equity adjustment of Extreme Vietnam 01 was directly reduced by 30,000 yuan.

　　On November 30th, Extreme Yue announced the launch of a new price policy and rights: from now on, all models of Extreme Yue 01 (Extreme Yue 01 Max or Extreme Yue 01 Max Performance) will be purchased, and the official price will be directly reduced by 30,000 yuan. In addition, the optional package of 100kWh ternary lithium battery dropped by 10,000 yuan (limited time), and the maximum drop of 01 Max (optional 100kWh battery package, that is, the external long-life version) was 40,000 yuan.

　　Based on the new price policy and rights and interests, the price of the entry-level version of Extreme Yue 01 has been increased to 219,900 yuan. Compared with other models in the industry, such as Tucki G9, Aouita 11 (panoramic car viewing), Wenjie M7 and Tesla Model Y, the discount is at least 30,000 yuan.

　　For the old users who have picked up the car, Extreme Vietnam will give cash compensation of 30,000 yuan difference according to the latest model price. Immediately, the next step is to add 12 months of "pure vision" high-level intelligent driving ROBO Drive Max free subscription, lifetime vehicle/three-electricity warranty, lifetime free road rescue and many other rights and interests. Not only that, users who lock orders in 2023 can upgrade the U-shaped steering wheel for free, and receive UWB keys for free when picking up the car during the year.

■ Chen Siying is the President of the Automobile Division of Xingji Meizu Group.

　　Recently, Chen Siying, the former CEO of Wei brand and general manager of tank brand marketing, has officially joined Xingji Meizu Group as the senior vice president of Xingji Meizu Group and the president of the automobile division, responsible for the operation and management of the automobile product line. Xingji Meizu Group said that Chen Siying’s participation will accelerate the deep integration and super synergy between the automobile industry and the consumer electronics industry, and help the group create a more intelligent travel ecology.

　　Chen Siying has been rooted in the automobile industry for more than 20 years and has rich experience in marketing and brand management. From 2009 to 2018, Chen Siying worked for Beijing Automobile Sales Co., Ltd. and served as marketing director and deputy general manager; From 2018 to 2019, he joined Qoros Automobile Co., Ltd. and served as vice president, executive general manager of sales company and general manager of sales company; From 2019 to January 2023, he joined Lingke Automobile Sales Co., Ltd. as the deputy general manager; From February 2023 to October 2023, he joined Great Wall Motor Co., Ltd. as CEO of Wei brand and general manager of tank brand marketing.

　　On November 30, 2023 Meizu Autumn Unbounded Ecological Conference officially kicked off. At present, the demand for intelligence in the automobile industry is growing day by day. The handcart integration scheme represented by the mobile phone domain is at the forefront of the industry development and is committed to bringing intelligent empowerment to more cars. To this end, Xingji Meizu Group further launched the mobile phone domain popularization plan and released a brand-new "hand-car integration" solution Flyme Link. (Text/car home Yang Yichun)

On November 17th, Guangzhou Auto Show arrived as scheduled. SAIC Roewe brought a number of models to the auto show. The most popular is D7, the first "D family" model just released on D DAY. At the scene, "the space of B-class car, the experience of B-class car, the price of A-class car." It has always been talked about by the audience, and it has become one of the selling points of Roewe D7, and even dubbed by Guangzhou residents as "BBA of 120,000 yuan".

In fact, before the auto show, SAIC Roewe D7 had set off a hot sale. With the listing of D7, "returning to the mainstream track" became the key word repeatedly mentioned by Wu Bing, general manager of SAIC Passenger Car Company, and Roewe team during the Guangzhou auto show. "I hope that the release of Roewe D strategy and the listing of D7 will enable Roewe to return to the main track. In the next few years, we will try our best to’ all-in’ new energy and fight the new energy track. " Wu Bing said in an interview.

"D family" dual power landed in Rongcheng

According to the D strategy released by Roewe on the eve of the auto show, in the next three years, with the "D family" as the core, Roewe will launch eight new energy vehicles one after another to achieve full coverage from pure electric to hybrid, from compact to mid-to high-end models, from cars, SUVs to MPV. On the evening of November 8, the Roewe D7 in the city was the first product of the "D family" series. The new car is positioned as a mid-to high-end sedan, which is divided into two versions: pure electric EV model and plug-in hybrid DMH model. The listed equity price is 143,800 ~ 170,800 yuan and 121,800 ~ 141,800 yuan respectively.

"The layout of the first car of Roewe’ D Family’ in the B-class car market is conducive to the opening of the’ D Family’ product sequence and the layout of all subsequent products." Park Chunxu, chief marketing officer of SAIC Passenger Car Company, said that the B-class car market, where fuel vehicles and new energy vehicles account for 73.5% and 26.5% respectively, is also one of the fastest markets to transform into new energy, so Roewe D7 has many opportunities. In terms of batteries, Roewe D7 EV is equipped with two Rubik’s Cube batteries with different capacities, namely 59.2kWh lithium iron phosphate battery and 68.5kWh ternary lithium battery. The cruising range of CLTC is 510km and 610km respectively, and it takes only 31 minutes to charge from 30% to 80% at the earliest, so it is not a problem to meet users’ daily commuting.

The most noteworthy thing is that Roewe D7 also launched the DMH model, which was also exhibited at the auto show. This is also a new generation of plug-in hybrid products launched by Roewe brand in recent years. Zhou Wei, general manager of Roewe Brand Division, is very optimistic about the future mixed growth trend. "The forecast data shows that by 2030, the market size of new energy vehicles will reach 21 million, and the market share ratio of pure electric, plug-in hybrid and fuel vehicles will form a pattern of 5:3:2." Wu Bing said. In terms of terminal sales, in October, the domestic plug-in hybrid sales volume was about 298,000, up 78.2% year-on-year and 9.9% quarter-on-quarter. The plug-in hybrid Roewe D7 DMH relies on the electromechanical integration architecture of SAIC Everest, and is equipped with 21.4kWh lithium iron phosphate battery. CLTC has a pure battery life of 125km, a comprehensive cruising range of 1400km with full oil and full electricity, and a fuel consumption of 4.3L per 100 km, which allows users to run far and economically.

If the long-distance demand of users is not so frequent, D7 EV is a very good choice, while if there is frequent long-distance demand, Roewe D7 DMH is more suitable. Based on the optimistic prospect, Roewe will build a number of new models around DMH technology in the future. According to Wu Bing, "Next year, Roewe DMH technology will be exposed in SUV, MPV and other car forms".

In addition to the powerful power configuration, Roewe D7 also has great space to leapfrog. Roewe D7 has a length of 4890mm, a wheelbase of 2810mm, a rear leg space of 933mm and a head space of 945 mm. With the backrest height and headrest width exceeding the same level, it is spacious, comfortable and sedentary. The zero-gravity cloud seat made of 9-layer materials, with ergonomic U-shaped embracing design and very thick soft foam, brings a very comfortable ride experience. In addition, the front seats also support the function of lying down, allowing drivers to take a nap in the car at any time. In terms of intelligence, Roewe D7 is equipped with a brand-new zebra intelligent driving machine system, and with double 12.3-inch long LCD screens, it realizes functions such as multi-lingual, seamless navigation of handcart, automatic planning of long-distance charging, and effective reply of diverse voices. The intelligent cockpit experience does not lose new forces in building cars.

In addition, as an old car manufacturer, Roewe D7′ s good handling is also a big selling point. It comes standard with five-link/multi-link independent rear suspension, and CST comfort braking system does not nod to avoid carsickness. It can be said that the Roewe D7 is a masterpiece of SAIC Roewe, and then a number of new energy vehicles will be launched.

Jinbo reception car auto show is sought after

In addition to the crowds in front of the D7 car, the author found that many visitors stopped in front of iMAX8. You know, many MPVs made collective appearances at this year’s Guangzhou Auto Show, but many visitors came to see iMAX8 EV, which was escorting the guests entering the Expo. As the just-concluded official reception car in China International Import Expo(CIIE), it represents "Shanghai Zhizao" and brings green, intelligent, comfortable and convenient high-quality travel service.

The design of iMAX8 has got rid of the traditional MPV style. Its front adopts a family-style design, and a large area of chrome decoration makes it look very noble. All-LED headlights are sharp and not dazzling, which makes driving at night safer. The side lines of the car body are smooth and the outline is concave and convex, showing a sense of movement and atmosphere.

On the whole, the design of Roewe iMAX8 is unique and can attract the attention of many consumers. Next, let’s go into the car to see the interior space of Roewe iMAX8. As soon as you step into the car, you will be attracted by its luxurious atmosphere. High-quality materials, leather seats are comfortable and rich in texture, plus a large number of wooden decorative plates and metal decorations, which make the whole interior space look full of advanced feeling. The spacious design of the seats provides passengers with spacious seating space, especially the second row of seats is more like a sofa, which is very suitable for family trips. The third row of seats can be flexibly adjusted to meet different needs. In today’s increasingly competitive automobile market, iMAX8 has quickly become a new star in MPV market with its unique design, luxurious interior configuration and excellent power performance. It is understood that if you order Roewe iMAX8 EV immediately, you can enjoy two years of zero interest, three power lifetime warranty, and up to 10,000 yuan replacement subsidy.

In addition, in the Roewe booth, consumers can also get close contact with hot-selling models such as i5 and RX5, which truly shows the brand-new Roewe brand image based on technology and speaking with strength. And Roewe models with three advantages of strong power, high intelligence and large space are also very competitive in the market. I believe that the brand-new Roewe brand will start a new chapter from Guangzhou Auto Show.

　　Russian Foreign Minister Sergei Lavrov held a press conference on April 1, denouncing the media reports that the United States and Russia reached a consensus on Syrian President Bashar al-Assad’s stay in private.

　　Bashar recently accepted an exclusive interview with the Russian media on issues such as the presidential election and the ceasefire in Syria. He said that if the Syrian people want to hold the presidential election in advance, he himself has no objection.

　　["Dirty" Report]

　　Al-Hayat, an Arabic newspaper headquartered in London, England, reported on March 31st that US Secretary of State John Kerry "ventilated" with several Arab countries, saying that the United States and Russia had reached a consensus on the Syrian peace process, including Bashar’s departure from Syria for other countries at a certain stage in the process.

　　In response, Russian Foreign Minister Lavrov denounced the report as "distorting the facts" at a news conference on the 1st, saying that "only the Syrian people can decide all issues concerning the future of Syria".

　　Russian Presidential Press Secretary dmitry Peskov also said on the same day: "Russia is different from other countries and will not discuss the sovereignty of third countries, whether through diplomatic channels or other channels."

　　The United States has not yet responded to the contents of the report in Al-Hayat.

　　On the Syrian issue, the United States and Russia have many differences. Russia supports the Syrian government, while the United States believes that Bashar should step down. On March 24th, Kerry held talks with Russian President Vladimir Putin and Foreign Minister Lavrov in Moscow, during which Kerry once again called on Russia to exert influence on Bashar to make the Syrian peace talks a success.

　　[Early election? 】

　　Today’s Russian news agency reported on March 31 that Bashar said in an exclusive interview with this Russian media recently that if the Syrian people want to hold the presidential election in advance, he himself has no objection.

　　Bashar said that early presidential elections have not been proposed as part of the political process. Whether to hold the presidential election in advance needs to comply with the wishes of the Syrian people, and at the same time, citizens should vote directly for the president, not through parliament.

　　Bashar won re-election in June 2014, and his term was originally scheduled to end at the end of 2021.

　　On March 24th, the latest round of Geneva peace talks on Syria ended, and the Syrian government and the opposition High Negotiating Committee reached a consensus on 12 principles.

　　The UN Secretary-General’s Special Envoy for Syria, Staffan de Mistura, later said that the two sides had serious differences in their understanding of the core issue of "political transition". The Syrian government believes that "political transition" is a transition from the current constitution to a new constitution, and from the current government to a new government with opposition participation; However, the Syrian opposition advocates that "political transition" means that Bashar will step down.

　　Josh Earnest, a White House spokesman, said earlier that a future Syrian government with Bashar al-Assad’s participation would "not work". (Du Fu Xinhua News Agency special feature)

With China’s economy stepping up to a new level, the new trend of automobile consumption is becoming more and more obvious, especially in the passenger car market. The requirements for cars are no longer just family cars, but also family life and leisure travel. Recently, the Roewe D7 EV is selling like hot cakes. Come and have a look at the national real transaction price, preferential discounts, sales volume, value preservation rate and other information of new cars, so as to help you understand the recent market situation of Roewe D7 EV more comprehensively.

This website collects the real transaction price of Roewe D7 EV. In the past month, the cash of new cars in Roewe D7 EV dropped by 24,300 yuan, and the maximum discount reached 8.38 fold. This website collects the price in real time all over the country. The actual transaction price is subject to the discount of local dealers.

From the following figure, we can see the sales trend of Roewe D7 EV. The sales volume of Roewe D7 EV in the past month was 1,176 vehicles. Although the sales volume does not represent everything, the sales volume has indeed become one of the criteria for consumers to choose a car. A high-selling car shows that it is suitable for most consumers, and it also has relatively perfect after-sales service, and the natural turnover rate of auto parts will be higher.

Next, let’s take a look at consumers’ comments on Roewe D7 EV. If the comprehensive score is 5, then Roewe D7 EV’s score is 4.87, which is quite good.
Among them, Roewe D7 EV has the most outstanding performance in space and interior, so consumers pay more attention to space and interior.
Then Roewe D7 EV can be considered.
Because each user has different needs for the car, different uses and different feelings, the evaluation is only for reference. The most reliable thing is to go to the store to test drive in person. Even if you can’t test drive on the road, you should sit in the car and feel it.

If you have seen the above, you still have doubts about whether the Roewe D7 EV is worth buying, then you can also look at the performance of the competing products of Roewe D7 EV. Among the following competing products, Hongqi E-QM5 sold the most last month, with 5,683 vehicles, so there is always one for you.

If the price of Roewe D7 EV is right recently, then friends should hurry up! Linkage promotion in many places across the country, and there are even more discount models as low as 30%.

1905 movie network news A few days ago, the title song MV of the new album "How Are You?" was released, and she specially invited and starred in it. This is also the re-cooperation between the two after the TV series "The Agreement of 18 Years Old", which coincides with the artistic conception of two happy people in the song "Reunion after many years".

According to the staff, Rene Liu’s album was originally scheduled to be released earlier, but in order to wait for Ariel Lin and Joseph Chang to fit in, the release of the album was delayed. Rene Liu said: "This album, from the beginning of the song, we will make it with a feeling of doing our best, and the MV is the same. We believe in them, then we will wait, and the work will prove worthwhile. "

When talking about his impressions of Ariel Lin and Joseph Chang, Rene Liu said with a smile: "Joseph Chang is a natural dish for many people, and his plays have always been very good. Especially, his life has entered another stage. In addition to bringing the audience into the play, he can also interpret his mature state of mind. I saw his restrained performance, which was very charming. "

For the two leading actors, they have experienced different life experiences and growth over the years. When talking about cooperating with Ariel Lin after many years, Joseph Chang said: "There is a deep feeling, so when shooting the MV, the song is broadcast, and when watching the reunion scene, I have a lot of feelings." Ariel Lin also praised: "Xiaoquan is of course more mature, relaxed and attractive."

It is reported that Rene Liu’s 15th album "Everybody Be Well" will be released on March 24th.

In the domestic automobile market, with the continuous progress of technology and the diversification of consumer demand, as one of the core components of the automobile, the performance and reliability of the gearbox are directly related to the driving experience and the overall quality of the vehicle. However, although domestic gearboxes have made remarkable progress in recent years, there are still some products that have attracted much attention because of their high failure rate. This paper will analyze and rank the three domestic gearboxes with high failure rate in detail: universal 6-speed automatic transmission 6T30(MH9), Peugeot Citroen 4-speed automatic transmission AT8 and BYD 6-speed wet powershift 6DT35.

1. Basic overview

As an important gearbox product of GM, the general 6-speed automatic transmission 6T30(MH9) is widely used in old Cruze, Yinglang and other models. This gearbox was once favored by the market for its multi-gear design and relatively smooth shifting experience. However, with the passage of time, the problem of high failure rate is gradually exposed.

2. The main fault performance

• Computer board failureThe control module (computer board) of 6T30 gearbox is one of its core components, which is responsible for receiving and processing signals from sensors and actuators to control the shift logic of gearbox. However, according to the owner’s report, the computer board is prone to failure during use, which leads to abnormal operation of the gearbox, such as sudden shift, inability to upshift or downshift.
• The sense of frustration is obviousIn addition to the computer board failure, the frustration of 6T30 gearbox during gear shifting is also a common problem reflected by car owners. This sense of frustration not only affects the driving comfort, but also may cause additional wear and tear to the mechanical parts inside the gearbox.
• Abnormal sound problemSome car owners also report that they will hear abnormal noise from the gearbox during driving, which is usually related to the wear of gears or bearings inside the gearbox. Abnormal noise not only affects the driving experience, but also may be a precursor to gearbox failure.

3. Solutions and improvements

In view of the above problems, GM has upgraded and improved the 6T30 gearbox several times. For example, optimize the control algorithm of computer board to improve its stability and reliability; Improve the lubrication system and seals inside the gearbox to reduce wear and abnormal noise; And strengthen the quality control and testing in the production process. However, due to the large number of old models and the high upgrade cost, some vehicles may still use the original gearbox.

1. Basic overview

Peugeot Citroen 4-speed automatic transmission AT8 is an old gearbox product, which is mainly used in old models such as 308, 408, C5 and Sega. This gearbox adopts fuzzy control theory to realize the automatic shift function under different slopes and load, but it has exposed a high failure rate in actual use.

2. The main fault performance

• Unable to shift gearsThe problem that AT8 gearbox can’t shift gears is one of the biggest headaches for car owners. According to reports, this fault usually occurs when the vehicle suddenly fails to shift gears during driving, resulting in the vehicle not being able to run normally.
• Fault lightWhen the gearbox fails, the fault light on the instrument panel will light up to remind the driver. However, for AT8 gearbox, the lighting of the fault light often means that a serious fault has occurred.
• Shift logic confusionIn addition to being unable to shift gears, the shifting logic of AT8 gearbox is often criticized by car owners. Some car owners report that the shifting timing and logic of the gearbox are not accurate and reasonable enough during driving, which greatly reduces the driving experience.

3. Solutions and alternatives

Because the failure rate of AT8 gearbox is high and difficult to repair, many car owners choose to replace the gearbox or upgrade the model to solve the problem. At the same time, with the continuous progress of automobile technology and the upgrading of consumer demand, more and more models are equipped with more advanced and reliable gearbox products.

1. Basic overview

BYD 6-speed wet powershift 6DT35 is a gearbox product independently developed by BYD Auto, which is mainly used in BYD Tang New Energy and other vehicles. This gearbox adopts a wet dual clutch structure to improve the smoothness and durability of shifting. However, its failure rate is relatively high in actual use.

2. The main fault performance

• Abnormal sound and frustrationAccording to the owner’s report, the 6DT35 gearbox often has abnormal sound and frustration during starting and accelerating. This kind of fault not only affects the driving comfort, but also may cause damage to the mechanical parts inside the gearbox.
• Oil leakage problemOil leakage is another common problem of 6DT35 gearbox. The oil leakage caused by the quality problem or improper installation of the internal seal of the gearbox not only wastes resources, but also may affect the performance and safety of the vehicle.
• Shift logic problemSome car owners also report that the shifting logic of 6DT35 gearbox is not accurate and reasonable enough, which leads to untimely shifting or excessive shifting impact during driving.

3. Solutions and suggestions for improvement

In view of the above problems, BYD has taken a series of measures to improve and upgrade. For example, optimize the internal structure design of gearbox to improve its durability and reliability; Strengthen the quality control and testing in the production process to ensure the stability of product quality; And strengthen the construction of after-sales service system to improve customer satisfaction. However, due to the limitation of technical level and production cost, some problems may still be difficult to be completely solved.

To sum up, the universal 6-speed automatic transmission 6T30(MH9), Peugeot Citroen 4-speed automatic transmission AT8 and BYD 6-speed wet powershift 6DT35 are three products with high failure rate in domestic gearboxes. There are many problems in performance, durability and reliability of these gearboxes, which have brought many troubles to consumers. However, with the continuous progress of automobile technology and the intensification of market competition, it is believed that the overall quality of domestic gearboxes will be continuously improved in the future to provide consumers with a better and more reliable driving experience. At the same time, consumers should pay enough attention to the performance and quality of gearbox when buying cars to avoid unnecessary troubles and losses caused by gearbox failure.