Based on farmers'supply behavior theory and price expectation theory, this paper establishes grain farmers'supply response model of two major grain varieties (early indica rice and hybrid wheat) in the major producing areas, to test whether the minimum grain purchase price policy can have price-oriented effect on grain production and supply in the major producing areas. Empirical analysis shows that the minimum purchase price published annually by the government has significant positive impact on farmers'grain supply in the major grain producing areas. In recent years, China steadily raises the level of minimum grain purchase price, which has played an important role in effectively protecting grain farmers'interests, mobilizing the enthusiasm of farmers'grain production, and ensuring the market supply of key grain varieties.%基于农户供给行为理论和价格预期理论,建立了主产区旱籼稻、混合麦2个主要粮食品种的粮农供给反应模型,以检验粮食最低收购价政策对主产区的粮食生产和供给是否能够发挥价格导向作用.实证研究表明,政府每年公布的最低收购价格对粮食主产区农户的粮食供给存在显著的正向影响.近年国家稳步提高粮食最低收购价水平,对有效保护粮农利益、调动农民粮食生产积极性,保证重点粮食品种的市场供给起到了重要作用.
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