Based on the grain production data and agriculture statistical data from 1995 to 2005， factors of grain production in China is discussed by the model of gray correlative analysis. The results show that Consumption of chemical fertilizers, Effective irrigated area, grain sown area and stricken area, Total power of agriculture machinery are the most important factors that affect grain production. To investigate the impacts of natural disaster on productivity of Jiangsu Province’s grain production, Agricultural productivity was specified as a fu...
