目前我省大豆生产用的种子仍以农家品种为主,多数农家品种枝叶繁茂,抗逆性强,产量较高,但生育期偏长,约110—120天,亩产尚难突破400斤水平.从现有的品种状况来看,往往一些早熟品种增产潜力较小,一些高产品种生育期又偏长,为了逐步统一这个矛盾,近年来我们开展了早熟高产育种,以期选出比当地推广种徐州424增产的早熟品种.并通过早熟高产育种的实践,对其技术有所体会,现简述如后. At present, the seeds for soybean production in our province still dominate the farmhouse varieties. Most farmhouse varieties have lush foliage, strong resistance and high yield, but the growth period is long, about 110-120 days, and it is still difficult to break through 400 pounds per mu In view of the existing varieties, some early-maturing varieties tend to have a lower potential for increasing yield and some high-yielding varieties have a longer growing period. In order to unify this contradiction step by step, we have conducted early maturing and high-yielding breeding in recent years in order to select better- Xuzhou 424 yield early varieties, and through the practice of early maturity and high yield breeding, some understanding of its technology, are outlined below.