**4. Conclusions**

The change of splash erosion amounts had the difference under the different rainfall condi‐ tions on the all the slopes. The splash erosion amounts of the CK slope were lower than those of other slopes under the rainfall intensity of 0.68 mm/min and 1.50 mm/min (Table.4).

**Figure 3.** Relationship between soil surface roughness and splash erosion amounts under the different rainfall

The change of soil surface roughness showed the different characteristic with the splash ero‐ sion amounts under the different rainfall conditions for the all the tillage practices. The

intensities.

108 Research on Soil Erosion Soil Erosion

Under the rainfall intensity of 0.68 mm/min, the soil surface roughness increased on the con‐ trol slope, the changing characteristics of soil surface roughness to the raking cropland slope was consistent with the control slope, however change of soil surface roughness to the other slopes decreased. The splash erosion amounts of the control slope were lower than those of other slopes, but the change of soil surface roughness was the highest. Under the rainfall in‐ tensity of 1.50 mm/min, the soil surface roughness decreased on the control slope, the change of soil surface roughness showed increasing trends on the other slopes. The splash erosion amounts of the control slope were lower than those of other slopes, and the change of soil surface roughness was the lowest. Under the combined rainfall intensity, the change of soil surface roughness of the control slope increased first, and then decreased, and in‐ creased finally with the increasing rainfall intensity. The change of soil surface roughness increased on the raking cropland slope, and the change of soil surface roughness increased first and then decreased for other slopes with the increasing rainfall intensity.
