50 year trends in nitrogen use efficiency of world cropping systems: the relationship between yield and nitrogen input to cropland

标题
50 year trends in nitrogen use efficiency of world cropping systems: the relationship between yield and nitrogen input to cropland
作者
关键词
-
出版物
Environmental Research Letters
Volume 9, Issue 10, Pages 105011
出版商
IOP Publishing
发表日期
2014-10-27
DOI
10.1088/1748-9326/9/10/105011

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