Effects of 15 years of manure and inorganic fertilizers on soil organic carbon fractions in a wheat-maize system in the North China Plain

2011 ◽  
Vol 92 (1) ◽  
pp. 21-33 ◽  
Author(s):  
Qiong Liang ◽  
Haiqing Chen ◽  
Yuanshi Gong ◽  
Mingsheng Fan ◽  
Hefa Yang ◽  
...  
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