It was found that the runoff volume (runoff depth) decreased with an increasing mulch rate but increased with rainfall intensity. The values of runoff volume ranged from 15.0 mm to 50.7 mm with a rainfall intensity range from 35 to 95 mm/h on the bare soil plot. Fig. 2 shows the plot of runoff volume versus the mulch rate for both the RC and the VGM. Fig. 2 shows that the runoff depth decreased with an increased mulch rate for both RC and the VGM. In the RC plots, the runoff volume reduced from 42.2 mm to 24.9 mm while the RC rate increased from 1.0 t/ha to 7.5 t/ha for a rainfall intensity of 95 mm/h