水土保持学报2011，Vol.25Issue(4)：26-31,35,7.
三峡库区紫色土坡地柑橘园不同耕作方式的水土流失研究
Correlation Between Farming Methods and Soil Erosion in the Purple Soil Slope of Citrus Orchard in the Three Gorges Reservoir Area
摘要
Abstract
Soil erosion of four farming methods,including clean tillage,sod culture,straw covering and weeding,was measured in purple soil slope with gradient of 11° in citrus orchard in the Three Gorges reservoir area by recording rain process and rainfall with automatic ombrograph,and the surface runoff volume was measured through interception pools for each runoff plots.The sediment contents in surface runoffs water were also analyzed.Results showed that surface runoff volumes for the 4 treatments were weedingsod culture〉straw covering〉clean tillage,and there were extremely significant differences among each farming methods.Annual surface runoff volume of weeding was 8.88%,10.79% and 22.51% higher than those of sod culture,straw covering and clean tillage,respectively.Extremely significant differences existed among the sediment contents of surface runoffs of each farming methods,and the sediment content of sod culture was 11.43%,38.00% and 60.00% lower than those of straw covering,weeding and clean tillage,respectively.In addition,there were also extremely significant differences among sediment losses for each farming methods.The annual sediment loss of sod culture was 10.84%,46.40% and 58.99% lower than those of straw covering,weeding and clean tillage,respectively.Sod culture was the best farming method for reducing soil erosion in slope citrus orchards in the Three Gorges reservoir area.关键词
紫色土/柑橘园/耕作方式/土壤地表径流/泥沙流失量Key words
purple soil/citrus orchard/farming method/surface runoff/sediment loss分类
农业科技引用本文复制引用
江才伦,彭良志,曹立,淳长品,凌丽俐..三峡库区紫色土坡地柑橘园不同耕作方式的水土流失研究[J].水土保持学报,2011,25(4):26-31,35,7.基金项目
国家科技支撑计划 （）
重庆市科委重大专项 （）
