Water-use Model for Agricultural Sustainable Development in the Loess Plateau

Most part of the loess plateau locates in the semiarid area and attributes to the fragile ecosystem.Lack of water and the old traditional agriculture pattern have hindered the agricultural development in this area.This paper,based on the present conditions of this areas and combining the successful agricultural experiences at home or outside in the semiarid area,has put forward an efficient water-use model that be suitable to the sustainable development in loess plateau;and has profoundly demonstrated the model's feasibility from three factors,they are water factor,crop factor and human factor.