An Empirical Study On The Price Support Of Grain And The Productive Reaction Of Agricultural

The problem of food security has been a major issue that relating to the people's livelihood.As time goes on,many phenomenon such as the incresing production of grain,the contrapositive prices at home and abroad and the apperance of many production,many stock and many import has been arising,the purchase and sale's situation of grain in China is becoming increasingly complex.In order to avoid the cheap grain harming the peasants and sharp price fluctuations,China has implemented a series of support policies to the price of grain to stabilize the market volatility and food prices,ensuring farmers' income and promoting farmers' enthusiasm for production.China's support policy on price of grain can be traced back to the inception of the new China,leading from the free policy of purchase and sale by the state-owned commercial to the traditional policy of purchase and sale,and then to the two track system,the protective price policy as well as the minimum purchase price policy,our country constantly open the grain price and the management to explore the reform of the grain market.In order to face the increasingly complex situation in policy of purchase and sale,the country began to implement the minimum grain policy along with other policies since 2004.The regular policy of price about grain market is able to stabilize the market price of grain and promote farmers' income and the fundamental interests to mobilize the enthusiasm of grain farmers.China's grain production,grain price and grain market need to maintain a great stability that play an important role in the protection of national food security.The history and current situation of the implementation on support policy of grain price was summarized firstly.And then describing the basic situation of the minimum purchase price policy,analyzing the constraints of it which including labor transfer and flow and labor cost.Then through the introduction of the minimum purchase price policy to illustrate the mechanism of the minimum purchase price policy.And selecting the wheat as the object,based on its characteristics,the area of wheat production is divided into the minimum purchase price policy and non policy implementation area,compared with the two wheat regional input-output status,including yield,planting area,cost benefit and factor input,contribution of production factors and the use of CHOW test to measure the wheat,to analyze the implementation of the policy and whether on wheat production.And on this basis by using DID model to estimate the minimum purchase price of wheat policy on the policy effect of input and output,and then on the background which the flow of rural labor force in the growing to use the Nerlove model to analyze the farmers' production and supply response to implement the minimum purchase the wheat price policy from the production,planting area,into three aspects.Based on the above results,the research shows that the minimum purchase price policy of wheat can promote the planting area of wheat and increase wheat yield,but the income effect is not obvious.And now the national minimum purchase price for wheat has been unchanged for several years,which is suggesting that the government support for the role of the market began to appear the trend of weakening,wheat prices fell below the support price has become a new phenomenon.So how to make the price support policy into effect will be the core of policy development in the future.