TY - Acta Geographica Sinica A1 - Haiya XU, Huiyi ZHU T1 - Spatial change of China's grain production based on geographical division of natural factors during 1990-2010 Y1 - 2015-04-20 17:23:23.74 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 582 EP - 590 VL - 70 IS - 4 UR - {https://www.geog.com.cn/EN/10.11821/dlxb201504006} N1 - 10.11821/dlxb201504006 ER -