TY - JOURNAL OF NATURAL RESOURCES A1 - CHAI Ling-huan, ZHU Hui-yi T1 - Evolution Trend of Regional Centralization of Grain Production in China Y1 - 2016-06-20 00:00:00.0 JF - JOURNAL OF NATURAL RESOURCES JO - JOURNAL OF NATURAL RESOURCES SP - 908 EP - 919 VL - 31 IS - 6 UR - {https://www.jnr.ac.cn/EN/10.11849/zrzyxb.20150536} N1 - 10.11849/zrzyxb.20150536 ER -