Seasonal and spatial root biomass and water use efficiency of four forage legumes in semiarid northwest China
Bingcheng Xu1, 2, Lun Shan2, Fengmin Li1, 2* and Jun Jiang2
1MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China.
2State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Northwest A & F University, Yangling 712100, China.
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