中国粮食生产的区域格局变化及东北商品粮基地的响应

程叶青, 张平宇

Regional Patterns Changes of Chinese Grain Production and Response of Commodity Grain Base in Northeast China

CHENG Ye-Qing, ZHANG Ping-Yu

地理科学 . 2005, (5): 513 -520 . DOI: 10.13249/j.cnki.sgs.2005.05.513