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本文在对野外试验观测小区进行数年天然降雨观测的基础上，借助于模拟降雨试验方法对花岗岩发育红壤坡地的三种不同试验小区的水土流失过程与规律以及降雨强度对水土流失的实际影响作一些探讨．试验实测资料表明农耕小区与光板小区的产流产沙结果较为接近，产流比牧草小区大数倍至数十倍，侵蚀产沙大到数百倍，而且随雨强增加其相差更加悬殊．雨强与降雨能量是影响农耕地与光板地水土流失的重要因素，但对牧草小区影响不大，牧草对增加土壤入渗、增强土壤抗蚀性、防止雨滴溅蚀有极其显著作用与效益．最后本文简述了对坡地改良与利用的一些想法．
Based on several years of natural rainfall observation in field test observation area, this paper makes use of simulated rainfall test method to study the soil erosion process and regularity in three different experimental plots of red soil slope in granite development and the actual effect of rainfall intensity on soil erosion Some discussion. The experimental data show that the results of runoff and sediment yield of farming plot and light board plot are close, and the runoff is several times to several ten times higher than that of forage plot. The sediment yield is as high as hundreds of times, and the difference is even more disparities with the increase of rainfall intensity. Rainfall intensity and rainfall energy are important factors that affect the soil erosion of farmland and light board, but have little impact on forage area. Forage has extremely significant effect and benefit on increasing soil infiltration, enhancing soil erosion resistance and preventing raindrop splashing. Finally, this article outlines some ideas on the improvement and utilization of slopes.