EN中文
Dynamic Analysis on Energy Efficiency of Modern Planting System and Gr ain Production ———A Case Study of Luancheng, Hebei
CHEN Dongdong, GAO Wangsheng, SUI Peng, WU Tianlong
PROGRESS IN GEOGRAPHY . 2008, (1): 99 -104 .  DOI: 10.11820/dlkxjz.2008.01.013