Analysis on Mechanism of China’s Grain Production Development and Evolution from 1985 to 2019

China’s grain production has been on a pathway paralleled with urbanization in recent 40 years, from lower efficiency and productivity to the higher ones, met complex impact factors contradiction between sustainable development of farming urbanization. Spatial-temporal pattern China, by total per capita output, was analyzed through Local Moran’I 1985 2019. Until 2019, high-output countries were mainly aggregated main plains basins third step terrain low-output areas increased southeastern coastal regions; high output almost disappeared low lot central southern regions Then factors, whole country surplus-shortage regions, detected found out Geodetector. In country, cultivated land areas, agricultural machinery, meat value-added primary industry not only played important role independently, but also had mutual coupling effect output. And surplus major industry, while shortage labors market as well economic factors. Thirdly, factor mechanism for four types orientations, i.e., orientation scale, benefit, product quality coordination, concluded, way different unique suitability advantage expounded.