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一、合理的间作、套种 合理的间作、套种,是提高复种指数,延长坡耕地覆被时间,增大覆被度,从而克服某种作物生长周期短、覆被度小、耕地露裸时间长所导致的水、土、肥大量流失。据有关资料,地表覆盖度在95％和15%、降雨强度在56毫米的同等条件下,后者比前者多流失水分94%,泥沙54.3%。可见增强地表覆盖度是防止水土流失的重要手段之一。
First, a reasonable intercropping, intercropping reasonable intercropping, intercropping, is to improve the multiple cropping index, extending slope cover time, increase cover degree, so as to overcome the short growth cycle of some crops, cover degree is small, exposed arable land time The resulting water, soil, fertilizer loss in large quantities. According to relevant data, the surface coverage is 95% and 15%, rainfall intensity is 56 mm under the same conditions, the latter more than the former loss of water 94%, sediment 54.3%. Can be seen to enhance the degree of surface coverage is one of the important means to prevent soil erosion.