Effects of Environmetal Factors Such as Surface Cover on Soil Organic Nitrogen Composition in Northwestern District of Guizhou
LI Yangzheng, LI Lan, WANG Xiaoer, CAO Xi, PENG Jianyu, XUE Xiaohui, YOU Ping
Journal of Agricultural Science and Technology . 2020, (10): 157 -166 .  DOI: 10.13304/j.nykjdb.2019.1026

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