水利学报Issue(6)：657-663,7.
稻田与沟塘湿地协同原位削减排水中氮磷的效果
The effect of Paddy Eco-Ditch and Wetland System on nitrogen and phosphorus pollutants reduction in drainage
摘要
Abstract
A series of water environment problems as water eutrophication and non-point pollution are caused by nitrogen and phosphorus loss in farmland drainage. This paper presents a system of water compre⁃hensive management to control agricultural non-point source pollution, which is called Paddy Eco-Ditch and Wetland System (PEDWS). It investigates the mechanism and subtractive effect of the system on nitrogen and phosphorus loss in farmland drainage. The results indicate that PEDWS could effectively decrease the paddy field drainage and concentration of nitrogen and phosphorus in the drainage that realizes nitrogen and phosphorus pollutants reduction in paddy fields. The drainage of PEDWS is 73.03% less than the tradi⁃tional irrigation and drainage system. The total nitrogen (TN) and phosphorus (TP) loads of PEDWS are 90.17% and 79.53% less than traditional irrigation and drainage system. The components of PEDWS also have effect on pollution control. Controlled irrigation could effectively decrease the paddy field drainage and concentration of nitrogen and phosphorus in the drainage, reducing ability to produce pollution and risk of pollution discharge. The TN and TP loads of controlled irrigation paddy field are 53.72% and 37.45% less than traditional irrigation paddy field. The TN removal rate in controlled eco-ditch reaches 64.59% and 54.35% for TP. Wetland could effectively purify nitrogen and phosphorus loss in drainage. The TN removal rate reaches 37.13% and 27.32% for TP. This research results could provide theoretical support and practi⁃cal guidance for the application of the PEDWS in China.关键词
稻田/控制灌溉/控制排水/沟塘湿地/氮磷Key words
paddy field/controlled irrigation/controlled drainage/wetland/nitrogen and phosphorus分类
资源环境引用本文复制引用
彭世彰,熊玉江,罗玉峰,顾宏..稻田与沟塘湿地协同原位削减排水中氮磷的效果[J].水利学报,2013,(6):657-663,7.基金项目
“十二五”国家科技支撑计划项目（2011BAD25B07，2012BAD08B04）；国家自然科学基金资助项目 （）
