Grain production safety is a foundation to grain safety.In the paper five production factors of grain power of agriculture machinery(x1),irrigation area(x2),the sown area(x3),consumption of chemical fertilizers(x4) and employed Persons(x5) were analyzed with 11.5 SPSS software and the result showed the first principal component decided mainly from variables x1,x2,x3 and x4,and the second principal component decided from variables x5.The prior order of the grain production capacity in 11 regions of Jingxi we...