通过砖红壤坡面室内模拟降雨试验测得径流产沙资料,由径流产沙资料率定土壤参数有效水力传导率、细沟可蚀性参数和土壤临界剪切力。结果表明,有效水力传导率值为16.7 mm/h,细沟可蚀性参数为0.005 s/m,土壤剪切力为4.0 Pa。根据Nash-Sutcliffe有效性进行有效性检验,结果表明砖红壤区土壤参数的率定结果合理,可应用率定的土壤参数进行砖红壤区WEPP模型的模拟。 The runoff and sediment yield data were obtained from indoor simulated rainfall tests on the red soil slope. The effective hydraulic conductivity, rill erosion parameters and soil critical shear stress were determined from runoff and sediment yield data. The results show that the effective hydraulic conductivity is 16.7 mm / h, the rill erosion parameter is 0.005 s / m and the soil shear force is 4.0 Pa. According to the validity test of Nash-Sutcliffe, the results show that the soil parameters in the red soil region are reasonable. The WEPP model in the red soil region can be simulated with the soil parameters.