中国亚热带土壤不同前期含水量对可蚀性K值的影响

Quantitatively study on the effect of antecedent soil moistureon erodibility factor k with rainfall simulator in subtropic China

采用人工模拟降雨试验的方法,研究我国亚热带７种有代表性土壤在干、湿两种状态下的土壤可蚀性Ｋ值,结果表明、相同类型土壤在干、湿两种状态下的可蚀性Ｋ值存在着明显的差异,耕作土壤的可蚀性Ｋ值高于非耕作土壤。

Erodibility (factor K) of seven representative soils under dry and moisture conditions in subtropic China was studied by means of the rainfall simulator. The results showed that difference was obvious between erodibilities (factor K) of the same soils under dry and moisture conditions. Value K of fanning soils is higher than that of non-farming soils.