小江流域土壤抗冲性实验研究

Experiment Study on Anti-Scouring of Soil in Xiaojiang River Basin

采用原状土冲刷法,对小江流域土壤抗冲性进行测试研究,结果表明:小江流域水稻土的抗冲性最大,棕壤其次,红壤、紫色土和褐红壤抗冲性最小;小江流域草地的抗冲性最大,耕地和灌丛地其次,裸坡最小;小江流域土壤的抗冲性大小与土壤中>2mm或<0.002mm的颗粒含量有较大关系。

The anti-scouring feature of soil in Xiaojiang River basin is studied by experiment. The result is that the paddy soil is the biggest in anti-scouring, the brown earth is less than paddy soil in anti-scouring, and more than the others in anti-scouring; the grassland is the biggest in anti-scouring, the farmland and scrublands is less than grassland in anti-scouring, and more than the bare slope in anti-scouring; the anti-scouring ability of soil in Xiaojiang River basin is relative to the contents of grain in >2 mm and<0.002 mm.