Study on the resistance and control mechanism of sugarcane leaf returning to field on slope erosion process of red soil thin sloping farmland
Based on the practice of conservation tillage in red soil areas of Guangxi,the authors analyze the erosion process and characteristics of sloping farmland under different sugarcane leaf covering modes,different sugarcane leaf lengths and amounts,and study the impact of different sugarcane leaf covering characteristics on the runoff and sediment reduction benefits of sloping farmland.The results indicate that different sugarcane leaf covering modes,leaf lengths and covering amounts have a significant impact on the runoff and sediment reduction benefits of slopes(P<0.05),and the most significant factor contributing to the runoff and sediment reduction benefits is the covering amount of sugarcane leaf.The runoff reduction effect is better under the condition of sugarcane leaf topsoil cover,and the sediment reduction effect is better under the condition of sugarcane leaf mixed cover.The reduction ratio of runoff and sediment(Rrs)under the condition of sugarcane leaf topsoil cover shows a trend of decreasing first and then increasing with the increase of sugarcane leaf covering amount.The cost for water and sediment reduction un-der the condition of sugarcane leaf topsoil cover is significantly greater than that under sugarcane leaf mixed cover.
sugarcane leaf covering modesugarcane leaf lengthsugarcane leaf covering amounterosion processreduction ratio of runoff and sediment(Rrs)
万方数据
维普
