摘要
为有效拦截控制平原河网地区农田径流氮磷流失,减少农业非点源污染,设计了农田排水渗滤沟道生态系统,并通过稻田蓄水、渗滤沟道、传统排水等不同情形下对TN、TP、NO_3-N、NH_4-N的拦截与去除效果进行了试验研究。结果表明,基于多孔透水的沟道护砌材料、排水垫层材料、沟渠植被生态系统、控制排水等方面构建的农田径流生态渗滤沟道系统,在农田径流氮磷拦截和去除效果上发挥了重要作用;水稻生育期,农田渗滤沟道系统对农田排水中总氮、硝态氮、氨氮等氮类营养物去除率介于18%～39%之间,去除效果较好,而对于总磷的去除率高达55.6%,拦截效果更为明显,为农业非点源污染治理提供了可行的解决途径。
In order to effectively control the loss of nitrogen and phosphorus in farmland runoff and reduce agricultural non-point source pollution in plain river network area,a farmland drainage and infiltration ditch ecosystem was designed,and the interception and removal effects of TN,TP,NO3-N and NH4-N were studied under different conditions of paddy field water accumulation,infiltration ditch and traditional drainage.And the results showed that the system played an important role in the interception and removal of nitrogen and phosphorus in farmland runoff.During the growing period of rice,the removal rates of total nitrogen,nitrate nitrogen and ammonia nitrogen in farmland drainage system were from 18%to 39%,while the removal rate of total phosphorus reached 55.6%and its interception effect was more obvious.The ecological percolation channel system of farmland runoff could provide an important reference for the treatment of non-point source pollution in agriculture.
作者
叶振威
张鸣
陈义浦
周明耀
YE Zhenwe;ZHANG Ming;CHEN Yipu;ZHOU Mingyao(School of Hydraulic Energy and Power Engineering,Yangzhou University,Yangzhou,Jiangsu 225009,China;School of Architecture Science and Engineering,Yangzhou University,Yangzhou,Jiangsu 225009,China;Nanjing Water Planning and Designing Institute,Nanjing,Jiangsu 210001,China)
出处
《水利与建筑工程学报》
2018年第6期236-240,共5页
Journal of Water Resources and Architectural Engineering
基金
江苏省太湖水环境综合治理科研课题(TH2014204)
关键词
农田排水
渗滤沟道
生态设计
污染物拦截去除
farmland drainage
percolation channel
ecological design
pollutant interception and removal
