我市郊区早毛豆栽培面积大,需种量多。早毛豆多在四月初播种,籽粒成熟一般在七月上中旬,时值霉雨天气,气温高、湿度大,籽粒干燥困难,种子常常在植株上发芽或霉烂,种子质量很差。采用“倒春种”留种措施,虽可改善种用品质,但因播期晚,温度高,日照又逐渐缩短,发育加速,产量很低, Early suburbs of my city suburbs of soybean cultivation, the need for more. Early soybean mostly sow in early April, the grain maturity is generally mid-July, when the windy weather, high temperature, humidity, dry hard grains, the seeds often germinate or mildew on the plant, the seed quality is poor. Adopting the method of “rejuvenating seeds”, although the quality of planting seeds can be improved, the sowing date and temperature are high, the sunshine is gradually shortened, the development is accelerated, the yield is very low,