College of Forestry Northwest A&F University Yangling 712100 P.R.ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling 712100 P.R.ChinaInstitute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water Resources Yangling 712100 P.R.China;
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling 712100 P.R.ChinaInstitute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water Resources Yangling 712100 P.R.China;
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling 712100 P.R.ChinaInstitute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water Resources Yangling 712100 P.R.China;
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling 712100 P.R.ChinaInstitute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water Resources Yangling 712100 P.R.China;
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling 712100 P.R.ChinaInstitute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water Resources Yangling 712100 P.R.China;
tiller; grain yield; nutrient deficiency; fallow precipitation; winter wheat;