The semi-arid Loess Plateau is a central zone of Chinese rainfed farming.Drought and soil erosion are the two major obstacles to economic development in the semi-arid Loess Plateau.The conservation agriculture and runoff agriculture has been developed for several decades here.However,its regulative role in rain water was very limited,and the problems of agriculture production are still going on,such as severe seasonal drought and water shortage,low agriculture productivity,fragile ecological environment,low...
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