一、播前准备1.精选种子。播种前要选择适应性好、高产、优质、抗异性强的大豆品种。将种子中的杂子、病子、破子、秕子和杂质去除。选留饱满、大粒、整齐的种子晒1~2天。2.种子处理:按种子量的0.3%用40%甲基异柳磷拌种。二、播种1.时期早播。早播可提高大豆单产及蛋白质含量,迟播蛋白质含量容易下降,适播期6月10~15日,正常情况下不要超过6月20日。 A preparation before sowing 1. Selection of seeds. Before sowing to choose good adaptability, high yield, high quality, heterosexual strong soybean varieties. The seeds of the sundries, disease, broken child, prickly heat and impurities removed. Choose to stay full, large grain, neat seed drying 1 to 2 days. 2 seed treatment: 0.3% by seed volume with 40% methyl isophorone seed dressing. Second, sowing 1. Early sowing. Early sowing can increase soybean yield and protein content, late sowing of protein content is easy to fall, suitable sowing June 10 ~ 15, under normal circumstances, not more than June 20.