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在幼龄桔园套种紫云英 (Ⅰ )、套种 (混播 )黑麦草和紫云英 (Ⅱ )、不套种 (Ⅲ )及套种黑麦草 (Ⅳ ) ,分析和模拟了下垫面性状和降雨与土壤流失量的关系及规律 .套种牧草使土壤流失量大大下降 ,平均侵蚀量仅为自然裸露区的 1 4.7% ;各小区 (折算成hm2 )单位降雨的土壤侵蚀量随降雨过程次序的增加而呈指数规律下降 ,土壤流失量随覆盖度指数而下降 .
The results showed that the characteristics of underlying surface and precipitation were simulated and simulated in intercropped aspen (Ⅰ), intercropped (mixed), ryegrass and astragalus (Ⅱ), unprotected (Ⅲ) and intercropped ryegrass (Ⅳ) And the relationship between soil erosion and soil erosion. The intercropping of forages greatly decreased the amount of soil erosion, with the average erosion amount being only 14.7% of the naturally exposed area. The soil erosion amount per unit area (converted to hm2) increased with the order of rainfall process But declined exponentially, and the amount of soil loss decreased with the coverage index.