Ecological Technology for Decreasing Agricultural Non-point Source Pollution from Drainage Ditch

Agricultural drainage is accounting for the largest to China's River Basin water pollution and agricultural non-point source pollution.The ecological function of drainage ditches is important for reducing the pollution.Through effective interception and conversion to preventing and controlling agricultural non-point source pollution is one of the hot spots in the current research.On the basis of analyzing domestic and foreign technique for controlling pollution, the measures are discussed, including the engineering control drainage measures, the ecological interception buildings, WRSIS system, ecological ditch and biological measures.The mechanism and effect of various techniques are clarified and the development trend is looked forward to, which will provide theoretical basis and technical reference for green, ecological and intelligent agriculture.