1.选择适宜的留种田留种田宜选择地势较高,排灌方便,土质疏松、肥力中等且不是连年留种的田块。2.适时匀播我地在晚稻田套种的紫云英,播种期一般在9月底至10月初。具体时间可根据前作晚稻的生长情况而定。晚稻荫蔽程度小,田间通风透光条件好的,可适当提早播种。反之,则要相应推迟播种。紫云英留种田的播种量要比一般绿肥田减少1/3左右,一般亩播 1. Choose appropriate to stay farming to stay farming should choose a higher topography, irrigation and drainage convenience, loose soil, medium fertility and not to keep the field plots. 2. Timely uniform broadcast I am in the late rice intercropped Astragalus, sowing period is generally late September to early October. The specific time may be based on the growth of late rice may be. Late rice has a low degree of shade and good ventilation and light conditions in the field, and can be planted as early as possible. On the contrary, we must delay planting accordingly. Soybean leaves to keep farming seeding than the average green manure reduced by about 1/3, the general mu sowing