Nitrogen Flow and Environmental Effects of Crop-Livestock System in Typical Area of North China Plain-A Case Study in Hebei Province
TONG BingXin, ZHANG HuaFang, GAO XiaoXian, HOU Yong, MA WenQi
Scientia Agricultura Sinica . 2018, (3): 442 -455 .  DOI: 10.3864/j.issn.0578-1752.2018.03.005

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