不同土壤抗蚀性能研究

Study on Soil Erodibility of Different Soils

该文对四川省农业科学院资阳水土保持试验站所布设的７种土壤试验小区，用模拟降雨装置进行了土壤抗蚀性能的初步试验研究。结果表明：（１）７种土壤的抗蚀能力大小依次为：冷沙黄泥＞棕紫泥＞红棕紫泥＞灰色潮土＞红紫泥＞黄红紫泥＞暗棕紫泥；（２）７种土壤的径流过程累积量与降雨历时、产抄过程累积量与降雨历时、径流过程累积量与产沙过程累积量之间均有显著的线性相关关系，以及６种土壤的土壤含水量与开始产流时间之间有非常好的曲线相关关系。

Soil erodibility of seven soils located in ziyang soil and water conservation fieldstation ofsichuan Academy of Agricultural sciences,ziyang,was studied under rainfall simulator.The resultshows:1.the soil erodibility of seven soils is yellow earth>brown purple soil>red brown purplesoil>grey alluvial soil>red purple soil>yellow red purple soil>darkbrown purple soil;2.thereis a significant linear relationship between runoff and rainfall duration,soil loss and rainfall duration, runoff and soil loss for seven soils,and Clear non linear relationship between soil moisture contentand runoff starting time for six soils.