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几场特大暴雨，使美国南部山麓典型薄层湿淋溶土的水蚀超过了土壤允许流失量。从流域的１９年系列资料中可以查到有１１场特大暴雨在复种作物采取水保耕作制度下阻止了侵蚀的发生，其原因是集约水保耕作管理增加了土壤碳及水稳性团聚体和降雨截留。而在传统耕作制度下特大暴雨却会产生强度侵蚀。研究表明，采取水保耕作技术对防治南部山麓因特大暴雨造成的土壤侵蚀有一定的积极作用。
Several typhoon rains caused the water erosion of the typical thin layer of wet leaching soil in the foothills of the southern United States to exceed the permissible level of soil loss. From the 19-year series of data in the basin, it can be found that 11 heavy rainstorms stopped the erosion under the system of hydroponic protection and crop cultivation under the multiple cropping system. The reason for this is that intensive soil conservation and tillage management increased soil carbon and water stable aggregates and Rainfall interception. In the traditional farming system, heavy rainfall will produce intense erosion. The research shows that adopting the technology of soil conservation and tillage has some positive effects on the prevention and control of soil erosion caused by heavy rainfall in the southern foothills.