通过“绿肥－玉米－后季稻”、“冬闲－玉米－后季稻”、“大麦－玉米－后季稻”、“小麦－单季稻”４种不同种植方式的试验研究．综合评价结果表明：以“绿肥－玉米－后季稻”的社会效益、经济效益及土壤理化性状明显优于其它三种复种方式．因此．认为上海郊区在以稻、麦（油）两熟为主的基础上，适当推广“绿肥－玉米－后季稻”粮、饲、肥相结合的复种方式，将更有利于提高农田经济效益、社会效益和生态效益，并且对发展畜牧业具有重要现实意义． The experimental research on 4 different planting modes of “green manure - corn - later season rice”, “winter fallow - corn - later season rice”, “barley - corn - later season rice” and “wheat - single season rice” The comprehensive evaluation results show that the social benefits, economic benefits and soil physical and chemical properties of “green manure - corn - afterglow rice” are obviously superior to those of the other three kinds of multi - cropping. therefore. Considering that the suburban area in Shanghai is mainly based on the double cropping of rice and wheat (oil), it is more beneficial to improve the economic benefits of farmland by properly popularizing the multiple cropping system of "green manure - maize - Social and ecological benefits, and has important practical significance for the development of animal husbandry.