EN中文
Impacts of Land Fragmentation and Cropping System on the Productivity and Efficiency of Grain Producers in the North China Plain: Taking Cangxian County of Hebei Province as an Example
WANG Xue, LI Xiubin
Journal of Resources and Ecology . 2020, (6): 580 -588 .  DOI: 10.5814/j.issn.1674-764x.2020.06.005