Nitrogen Flow of Crop-Livestock Production System and Its Driving Forces in Chongqing over the Past 20 Years
CHEN XuanJing, GONG YaHui, XIE Jun, ZHANG YueQiang, CHEN XinPing, SHI XiaoJun
Scientia Agricultura Sinica . 2018, (3): 468 -480 .  DOI: 10.3864/j.issn.0578-1752.2018.03.007

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