水土保持研究2024，Vol.31Issue(5)：18-25,8.DOI:10.13869/j.cnki.rswc.2024.05.016
雨型和种植模式对鄱阳湖平原区农田水土流失的影响
Effects of Rain Patterns and Planting Patterns on Soil and Water Losses in Farmland in the Poyang Lake Plain Area
摘要
Abstract
[Objective]The aims of this study are to analyze the response of farmland surface runoff and sediment loss to rainfall patterns under different planting modes,to explore the laws of farmland surface runoff and sediment transport in the Poyang Lake plain area under new circumstances,and to provide scientific basis for preventing and controlling farmland surface soil erosion.[Methods]64 rainfall events were classified using K-means clustering method,and combined with monitoring data such as runoff and sediment production in runoff plots,the impact of surface runoff and sediment losses in different rainfall types of farmlands under three planting modes were analyzed.[Results](1)The duration,rainfall and maximum rainfall intensity of 30 minutes were taken as the rainfall characteristic indicators.The rainfall could be divided into 4 types(type A:'medium duration,small rainfall and light rainfall intensity',type B:'short duration,small rainfall and medium rainfall intensity',type C:'long duration,heavy rainfall and medium rainfall intensity',and type D:'short duration,medium rainfall and heavy rainfall intensity').(2)The variation of runoff and rainfall of each planting mode was basically the same,and the runoff was also more when the rainfall was larger.In each month,dry farming mode produced the most runoff.(3)No matter what type of rainfall,the runoff and sediment losses of dry farming mode were the highest.Under the types A and C,the runoff and sediment yields of water farming mode were the lowest.Under the type B,the runoff reduction effect of water and dry rotation mode was the best.(4)There were significant differences in the total runoff and sediment loss under different planting modes,and the performance followed the order:dry farming mode＞paddy upland rotation mode＞paddy farming mode.[Conclusion]In conclusion,compared with the dry farming model,the water farming model has certain advantages in reducing runoff and sediment,especially when dealing with type A and type C,the effect of runoff and sediment reduction is more obvious.关键词
雨型/种植模式/农田/径流/泥沙流失Key words
rainfall patterns/planting patterns/farmland/runoff/sediment loss分类
农业科技引用本文复制引用
陈昱,刘方平,吴彩云,王子荣..雨型和种植模式对鄱阳湖平原区农田水土流失的影响[J].水土保持研究,2024,31(5):18-25,8.基金项目
江西水利科技项目"典型水旱轮作模式下高标准农田排水特性及优化方案研究"(201821ZDKT13),"节水灌溉条件下微藻生物肥对稻田氮素流失影响研究"(202324YBKT15) （201821ZDKT13）
