Quantitative Assessment of the Impact of China’s Direct Grain Subsidies on Grain Yield--Based on the

• 出 处: Asian Agricultural Research
• 发表日期: 2012年04期
• 关键词: Direct grain subsidies Grain yield Food price Elasticity coefficient
• 基金项目: Supported by Scientific Research Foundation Project of Southwest University(SWU1109039);Fundamental Research Funds for the Central Universities(SWU1109039)

We build the influence function empirical model of China’s grain production at the present stage in view of the factors influencing direct grain subsidies,using Cobb-Douglas production function model.And we estimate the elasticity coefficient of impact of China’s direct grain subsidies on grain yield,using the panel data pertaining to 29 provinces in the period 2004-2007;comparatively analyze the validity and limitation of policy factors of direct grain subsidies on China’s grain yield.The results show that at the present stage,the elasticity coefficient of impact of China’s direct grain subsidies on grain yield is 0.002 3,and under the existing subsidy system and level,direct grain subsidies play a positive role in increasing grain yield,but the role is limited;the elasticity coefficient of impact of the food price on grain yield is much larger than that of impact of direct grain subsidies on grain yield.Therefore,the government should strengthen and improve direct grain subsidy policies;in the mean time,pay full attention to the use of market mechanism to consolidate the basic role of the food price in promoting food security to a great extent.