对农田排水沟进行生态化设计,是解决我国灌区的农业面源污染、混凝土在沟渠建设中过度使用、生态环境遭破坏,及水体自我净化能力降低等多方面问题的一条可行之路。本文阐述了农田排水沟生态化设计的特点、原则和方法,以湖北省荆门市谭店村示范区为例进行了含有生态型复式断面、鱼虾通道、阶梯式生物逃生通道,及生态净化吸附区等综合生态工法的农田排水沟生态化设计及效应研究,最后对排水标准进行校核,为其他灌区进行排水沟的生态化设计及升级改造提供参考。
The ecological design of the farm drainage ditch is a feasible way to solve the problems such as agricultural non-point source pollution of the irrigation area, overuse of concrete in the ditch construction, ecological environment destruction and reduction of water self-purification capability in our country. This article presented the characteristics, principles and methods of ecological design of farm drainage ditch, studied the ecological design technology including ecological compound section, fish channel, ladder-shape animal escaping slope, ecological purification section and the effects of farm drainage ditch in the demonstration farm belt in Tandian Village of Hubei Province, and verified the drainage standard of the ditch. The obtained results would provide the references for the ecological design and update in other irrigation areas.