Spatial Characteristics of Nitrogen and Phosphorus Flow in Cultivated Grassland of China
WEI ZhiBiao, BAI ZhaoHai, MA Lin, ZHANG FuSuo
Scientia Agricultura Sinica . 2018, (3): 535 -555 .  DOI: 10.3864/j.issn.0578-1752.2018.03.012

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