Grey Correlative Analysis of Grain Production and Factors

Based on the analysis on the change of grain production during 1996-2003 in Nanning city, according to the grey system theory, factors affecting grain production in Nanning city are analyzed and correlative degree between factors and grain production is quantitatively measured. The results show that per unit area grain production, arable area and grain sown area are the most important factors that affect grain production in Nanning city. And the countermeasures on realizing the sustainable development of grain are presented.