Abstract:

The article studied the effect of soil erosion in sloping field at different slop, different rainfall and different cropping pattern. The results showed that there was a relationship between rainfall(x) and soil loss(y),and it followed the function of y=aebx(a﹥0，b﹥0),which showed that the amount of soil erosion increased with the rainfall increasing. Under the same conditions of rainfall, the soil loss exacerbated with the slop increasing, and the soil loss on sloping tillage is more serious than that on contour tillage.The Regression equation about soil loss(y); rainfall(x1) and slop(x2) was Y=2.49-1.83X1+2.13X2+0.02X1X1-0.162 X2X2 + 0.13 X1X2, and that the effect of rainfall to soil loss is greater than slop.