Spatio-temporal effects analysis of grain yield on country level in Shandong province

摘要: Grain security deals with grain alone differs from food security, is related to the development of national economy a major strategic issues, warning limits and spatial autocorrelation characteristics per capita possession about 91 country units were analyzed in Shandong province 2000 2007. Furthermore, error model total yield was established units. Results showed that status 63 2007 increased comparing 2000, percent 69.2% presented increasing tendency. The center located lingxian, Yucheng country, north whether or results also indicated there no 80 countries units, 11 county status. From 2007, significantly difference suffered decrease pattern more reasonable. SEM study need agricultural informationization mechanization, policy orientation, social driving forces for important influence.