THE STUDY ON THE DIFFERENCE IN THE RURAL HOUSEHOLDS'GRAIN CONTRIBUTION IN MAJOR GRAIN PRODUCING AREAS——BASED ON THE SURVEY DATE OF THE RURAL HOUSEHOLDS IN HENAN PROVINCE
基于河南省近5000户农村家庭的跟踪调查数据，分析了农户粮食贡献的差异，发现经济分化导致余粮户减少、缺粮户增加且缺口扩大，粮食安全主要依赖余粮户，且区位优势对粮食贡献有复杂影响。
By using nearly 5 000 households' on following observations sample information of sixteen villages in Henan province,this paper analyzes the difference in the households' grain contribution,the results suggest that: economic polarization among the households is increasingly obvious in Henan province,so the households with surplus grain are decreasing,the households with no enough grain are increasing and the shortage is enlarged.The grain contribution for security mainly depends on the decreasing the households with surplus grain,and its location differentiation is significant.Natural location advantage is conducive to raising the level of farmers' grain contribution,economic location advantage either does good to or has negative effect on farmers' grain contribution,then with both of the location advantages,the synthesis effects on farmers' grain contribution appear.