The zero tillage of paddy rice by domestic wastewater to culture man-made economic wetland can consume the pollutants of the wastewater and reduce the use level of pesticides and fertilizers.

• 利用城市污水进行水稻免耕栽培,培育人工经济湿地,通过消耗城市污水中的污染物,减少化肥农药施用量,减轻滇池污染。