In addition to wind erosion, water erosion and desertification, there havebeen two serious constraints on drylands in China: water stress and nutrient stress.Nutrient stress, including nutrient deficiency, nutrient imbalance, and nutrient lossesby different ways does not only influence crop production by itself but also in-fluences soil’s water use efficiency. For this reason, more attention has been givenby scientists to the management of nutrients in dryland, soils.
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