Research on Water Pollution Caused by Chemical Fertilizer in Three Gorges Reservoir Area

Although fertilizer makes a great contribution to an increase in crop yields, fertilizer has been one of the main threats to polluting groundwater and surface water. In recent years application of chemical fertilizer generally takes on an ascending trend, and it contributes a lot to nonpoint source water pollution in Three Gorges Reservoir area. So it is necessary to take measures to prevent nonpoint source water pollution caused by chemical fertilizer to protect the water ecology in Three Gorges Reservoir.