| Under the conditions of the development of China’s agricultural policy remains unchanged, the basic stability of the material input, relying on scientific and technological progress to improve the competitiveness of agriculture become the way to sustainable development. The CPC Central Committee and the State Council attach great importance to agricultural science and technology innovation and transformation capabilities, accelerating the construction of agricultural technology popularization system, requires in-depth implementation of agricultural Technology-home project, and encourage all kinds of agricultural science and education institutions and social forces to participate in a wide range of agricultural extension services."Science and technology are primary productive forces" But science and technology is only potential productivity, only to convert it to be applied to production practice, can become enormous power to promote economic development. Currently, China’s agricultural scientific and technological achievements seems fruitful, but there exist low conversion rate of scientific and technological achievements and obstacles between agricultural scientific and technological achievements and practical productive forces. The most fundamental reason is that people are insufficiently aware of the role of farmers in technology dissemination and diffusion in actual promotion, farmers but merely as a passive receptor of new agricultural technology. Effective promotion is to understand the needs of the farmers, to provide technical information and advice applicable for farmers, to help farmers make decisions to adopt new agricultural technology in the established resource constraints. Farmers as agricultural production and management body, the final receptor of the promotion and application of scientific and technological achievements, the scientific and technological needs of the farmers’ situation has a direct impact on the direction of agricultural technology popularization and application and effect.But by the limit of many other conditions,the speed of farmers to accept and digest technology lags behind the rapid development of technology, forming the "disconnect" between supply and production needs.However, in our agricultural technology promotion, the Government is in the top-down command-administrative way, through the selected agricultural technology dissemination of results, achieving a sustainable agricultural products increase stability of the target. Agricultural technology promotion agency of the main functions at all levels of government is to complete the technical marketing tasks, rather than taking into account whether the technology farmers. In accordance with the basic principles of a market economy, the demand is the "supply" of the basic driving force." Therefore, the promotion of agricultural science and technology, we need to discuss how can the government provide technology supply, focusing on the agricultural supply effect, in science and technology from farmers’ demand perspective.This paper focus on the great out, around China’s agricultural technology promotion system development, the farmer technique requirements and the actual supply technique.Behavior, is based on farmers to choose the technology farmers have been investigated through the questionnaire as the supply of agricultural technology to study investigated farmers expect technology to be studied as the needs of the agricultural technology. Based on the perspective of the needs of farmers, research at this stage of the supply of agricultural science and technology, research under the constraints of the new resource endowments,what are the differences between agricultural supply situation in China and the practical needs of the farmers there, the government can provide what agricultural extension services. Different focus mode of promotion and promotion of content each showing how the characteristics of our farmers really need what type of technology.The core content of this article is to explore, on the basis of analysis of the development and status of the agricultural extension system, the influencing factors of agricultural technology needs of farmers, technology needs of different farmers show what difference,Government supply of agricultural science and technology showing how the kind of features, the different modes of supply playing what role in technology dissemination process and having what kind of characteristics. On the basis of the two,the paper Comprehensively analyse the fit problems of the supply and demand of China’s agricultural technology promotion,focusing on the direction and policy of agricultural extension mechanism to further improve.Papers integrated use literature analysis, questionnaire survey and empirical analysis. Before the started field investigation, we retrieve a large literature on agricultural science and technology promotion at home and abroad as well as agricultural technology supply and demand, to identify the entry point of the research questions, summarize, and extract the factors affecting the technology needs of farmers. The Task Force carried out Tens of thousands of questionnaires, called" The main labor output provinces rural science and technology needs and service survey", in 2010, March and April. Our main contents of inquiry is that China’s labor export province of migrant workers and the remaining farming staff characteristics, agricultural service condition and the effect, the farmers on agricultural technical requirements and expectations. So that we understand the effects of the various regions accepting the agricultural technical services as well ae the needs and expectations of the farmers on agricultural technology. There is some empirical Analysis of the data after the valid questionnaires recycling finishing. From the government’s agricultural supply side, we conduct, technical analysis estimates in Factors affecting the supply using Logit regression model to identify the most significant factor of the impact of government agricultural supply. On the other hand, from the famers’agricultural need side, our analysis of Logit regression model estimates the impact of the technology needs factors and identify the most significant factors affecting farmers agricultural needs.The full text is divided into seven chapters. The first chapter and the second chapter mainly elaborated the research background, research significance, and the results of previous studies were reviewed, which lays theoretical foundation of the research. The third chapter chapter analyse from the historical on the reform of Agricultural Technology Extension System in China. The the fourth chapter analyse from the realistic perspective on the relationship between supply and demand. Furthermore, making an empirical study on the current stage of China’s agricultural technology demand and farmers’choice of technology and conducted.The fifth chapter analyse the performance of agro-technique extension behavior, based on the evaluation of farmers. The sixth chapter studied the farming ability member promotion content change and promotion mechanism improvement based on thefifth chapter.Specific as follows:The first chapter:introduction. It is based on the farmer’s choice behavior on China’s agricultural supply and demand background, specifically studies the problem of meaning; introduces the research methods and data, a clear objective, on textual research structure, research framework of general description.The second Chapter:theoretical basis and research situation at home and abroad review. It treats agricultural technology innovation theory, farmer’s choice behavior theory and agricultural technology supply and demand theory as the basis of theoretical analysis the article. From different angles of the problem theoretically support, it reviews recent domestic and foreign scholars on agricultural technology supply and demand and farmer technology choice behavior research, summing up the agricultural technology supply and demand and farmer’s choice behavior researchThe third chapter:the development and problems of Agricultural Technology Extension System in China. Mainly from the angle of history, it expounded the development process of Chinese Agricultural Technology Extension System, compared the different stages of achievements and problems of agricultural technology extension in China, reflected the mode of farming ability promotion and development the necessity and the feasibility. Finally it summed up the current problems in the statistical system of promotion, the theoretic foundation for the following research.The fourth chapter:Chinese agricultural technology supply and demand situation analysis. From two aspects Government supply and demand of farmers, it tells the present stage our country agriculture technology status. On the supply side, it analyses current supply of agricultural technology by the government of agricultural technology service organizations, the types and effectiveness of agricultural technology, agricultural technology to provide channels and other aspects. On the demand side, it analyses demand situation of agricultural technology by talking about farmers to adopt new technology obstacle, farmer to science and technology demonstration households cognitive, farmers on agricultural technology demand order, the farmers need most technical guidance. This chapter focuses on the analysis of our country farmers’ choice of technology in the process, what factors affect and decide the farmers’ choice of technology. Understanding the effect that includes age, cultural degree, farmer workers, family income level condition affects farmer themselves feature of agricultural technology choice behavior in rats.The fifth chapter analyse the performance of agro-technique extension behavior, based on the evaluation of farmers. First, from the theory of farming ability to popularize the performance principle and influence factors of agricultural technology extension service system, we obtained the diffusion efficiency by farming ability member attitudes, technical quality, environmental impact, and farmer accept efficiency by the behavior of farmers, using technology initiative, economic environment, social environment and other effects.Secondly, based on the relationship of extensive behavior and performance of the promotion, we analyse the the contradiction between supply and demand of agricultural technology. Finally, we analyse the causes of the contradiction between supply and demand of agricultural technology popularizationThe sixth chapter studied the farming ability member promotion content change and promotion mechanism improvemen. First analyzes the external environment of transformation of agricultural technology promotion. Secondly we analyse the requirement of transformation of agricultural technology promotion. Finally, based on Wu Xue city of HuBei province, we make a case study about transformation of agro-technical popularization.The seventh chapter:conclusion. The government agricultural supply, different agricultural technology should be made by different supply way, achieves the best supply effect.On the side of farming ability demand, different farmer household types showed differences of farming ability demand items, demand characteristics, which should be directed to the farmer characteristics provide ATM services, truly meet the diverse needs of farmers agricultural.
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