Irrigation and rainfall would make tilled loss soil relatively compact because water makes soil particles cohered to each other,altering the soil structure and erosion resistance. Soil disintegration rate is regarded as a key parameter to evaluating soil's erodibility. Accurate prediction of disintegration rate of tilled soil is very important to effective management and conservation of soil and water. In this paper,simulation of wet-dry alternation of soil was performed using a soil box to explore effects ...