Research On The Mechanism Of Grain Support And Procurement Policies Under The Condition Of Market Opening

At present,China's grain industry faces the abnormal phenomenon of grain production,import volume and inventory quantity of “three volumes together”.With the international and domestic market increasingly close,because of the import of food has a clear advantage of low prices,China's grain imports increased significantly,while domestic food is more in the backlog.There is no doubt that grain support and procurement policies play a very important role in promoting China's grain production,but in the new international situation,China's grain market will be more open and will face fierce competition in the international market,to crack the problem of grain “three volumes together”,the policy should be abolished or continue,which has an important referential significance to the reform of the grain policy in china.Firstly,this paper theoretically analyzes the mechanism of increasing yield of grain support and procurement policies under the condition of closed and open market,compares the difference of yield increasing mechanism of grain support and procurement policies under different environment,combined with China's actual grain conditions,the two hypotheses are proposed in this paper.Secondly,to establish a double difference model(Diference-In-Diference,DID)empirically analyzes the effect of grain support and procurement policies on yield-increasing,which market openness is very different from the wheat market and soybean market,obtaining the yield-increasing effect of grain support and procurement policies in different opening degree of the market and verifying the hypothesis 1.Again,from the perspective of food import and food stocks dimensions,using Co-integration analysis and Granger test to empirically analyze the yield-increasing consequence of grain support and procurement policies of low market opening degree of the wheat market and high market opening degree of soybean market and verifying the hypothesis 2.Finally,based on the theoretical analysis and empirical analysis results,this paper draws relevant conclusions and puts forward some pertinent suggestions for the reform of China's grain policy.The main conclusions are as follows: First,there is a negative relationship between the degree of openness of the market and the yield-increasing effect of grain support and procurement policies,in a relatively closed environment,the yield-increasing effect of grain support and procurement policies is more obvious.Second,there is a positive relationship between the degree of openness of the market and the yield-increasing consequence of grain support and procurement policies,in a relatively open environment,the impact on grain inventory and import is greater.Therefore,different policy forms are adopted to different extent of the opening of the market,that is,the grain variety with lower market opening degree,such as wheat,rice and so on,we will continue to implement the minimum purchase price policy,the grain variety with higher market opening degree,such as soybean,we will progressively implement the target price policy;To adjust the agricultural products supply quantity,price and improve the quality of agricultural products,change and improve the existing agricultural production mode and the production process,cultive and develop new agricultural business entities to promote agricultural supply side structural reform;accelerate the improvement of food import quota management system,to co-ordinate the use of "two markets",adjust the domestic surplus and deficiency,to avoid the impact of a large number of imported varieties on individual domestic market.