Rice-duck mutualism system is one of the most effective mode to promote ecological agriculture in China and the main rice producing countries in Asia. Rice-duck mutualism system has been improved the living environment of beneficial organisms; it also has good control effects on weeds, pests and blight diseases, the control rate was about 50%~95%, and reduced the emissions of CH4 and N2O in the field. The contents of all the nitrogen, alkali nitrogen, available potassium and organic matter of paddy field were in-creased, the soil structure was effectively improved after rice-duck farming; the contents of ammonium nitrogen, nitrate nitrogen and phosphorus in the water were increased,which increased the risk of nitrogen and phosphorus loss in paddy field.%稻鸭共育技术是我国及亚洲水稻主要生产国家大力推广的一种生态农业模式.该模式不仅使很多有益生物的存活环境得到改善,对杂草、害虫、纹枯病等也有很好的防治效果,防治率约在50%~95%之间,而且减少了CH4和N2O的排放,有效促进了稻田生态系统的良性循环发展.稻鸭共育后的稻田全氮、碱解氮、速效钾和有机质等土壤营养含量有所增加,土壤结构有效改善;稻鸭共育田的水体中铵态氮、硝态氮和磷含量有所提高,增加了降雨或搁田时排水的氮磷流失风险.
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