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为防止灌溉引起沟蚀的发生,采取水土保持耕作措施。合理的水保耕作制度可使土壤侵蚀降低47%以上,作物产量可持续不变。5年后,能使农民单位面积土地收入平均增加125美元/hm~2·a。
In order to prevent gully erosion caused by irrigation, adopt soil and water conservation farming measures. Proper water conservation farming system can reduce soil erosion by more than 47% and crop yield can be maintained. After 5 years, the average income per unit area of peasants will increase by 125 US $ / hm ~ 2 · a.