THE IMPACT OF PRICE-SUPPORT POLICIES ON THE CHANGES OF FOOD CROPS PLANTING AREAS IN CHINA

作者 Wang Na; Li Xiaoyun; Zeng Linlin; Jiang Wenqu

期刊 Journal of China Agricultural Resources and Regional Planning , 2020,10:41

摘要 This paper evaluated the average effect and dynamic effect of price-support policies on the changes of planting area of different crops,and measured the cross-policy elasticity of multiple price-support policies.Based on the panel data of the provinces implementing price-support policies from 1998 to 2016,this paper established control groups,and used the PSM-DID method to evaluate the average effect and dynamic effect of price-support policies,further measured the cross-policy elasticity by the Nerlove model.The results showed that:(1) The price-support policy had positive effects on the planting area of rice,wheat and corn,and with larger effect on corn,followed by rice and wheat,but it had no significant effect on the soybean planting area.(2) The longer the price-support policy maintained,the greater the promotion effect on the planting area of rice and corn had,and the effect on wheat planting area was relatively stable.(3) The changes in the wheat and corn planting area were mainly related to respective price-support policy,and the changes of rice planting area were affected by rice pricesupport policy and other crop policies,for changes in the soybean planting area were sensitive to corn'' s storage policy,but not to soybean price support policy.Therefore,it is necessary to distinguish the different policy impacts for crops,and pay attention to the regional cross-effects from various policy when multiple supporting policies are implemented in the same region.