Long-term fertilization effects on yield trends and soil properties under a winter wheat–summer maize cropping system
Xueyun Yang1,2, Yang Yang2, Benhua Sun2 and Shulan Zhang1*
1State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, 712100, Yangling, Shaanxi, China.
2College of Resources and Environment, Northwest A & F University, 712100, Yangling, Shaanxi, China.
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