玉米“价补分离”政策对猪肉供应链稳定性的影响

Influence of corn'price-subsidy separation'policy on stability of pork supply chain

文章旨在分析玉米“价补分离”政策对猪肉供应链稳定性的影响,以维护猪肉供应市场稳定性。基于2012—2021年我国19个玉米主产省份面板数据,借助双重差分法检验玉米“价补分离”政策对我国猪肉供应链稳定性的影响。结果显示,在控制一系列其他因素的基础上,伴随玉米价格升高,玉米“价补分离”政策的实施能够正向提升我国猪肉供应链的稳定性,提升效果约为0.042。进一步研究发现,玉米“价补分离”政策对猪肉供应链上游稳定性的影响较为明显,政策实施后猪肉供应链上游稳定性上升了0.1067%。研究表明,玉米“价补分离”政策对我国猪肉供应链稳定性具有一定促进作用,且该效应在猪肉供应链上游促进作用更强。

The purpose of the paper was to analyze the influence of corn'price-subsidy separation'policy on the stability of pork supply chain,so as to maintain the stability of pork supply market.Based on the panel data of 19 major corn producing provinces in China from 2012 to 2021,the impact of corn'price-subsidy separation'policy on the stability of pork supply chain in China was tested by double difference method.The results show that,on the basis of controlling a series of other factors,with the increase of corn price,the implementation of corn'price-subsidy separation'policy could positively improve the stability of pork supply chain in China,and the improvement effect was about 0.042.Further study showed that the policy of'price-subsidy separation'of corn has obvious influence on the upstream stability of pork supply chain,and the upstream stability of pork supply chain had increased by 0.1067%after the implementation of the policy.The study indicates that'price-subsidy separation'policy of corn can promote the stability of pork supply chain in China,and the effect is stronger in the upstream of pork supply chain.