经田间试验,对不同产量水平大豆的生育动态进行比较,结果表明:黄淮流域夏播大豆,以选用生育期近100天,株形紧凑的中秆或矮秆品种,适当提高密度,较易获得200kg/亩以上的稳定高产。其株高、单株干重与叶面积增长积累动态,呈苗期较慢,花荚期开始转快,鼓粒期减缓的“S”形曲线,各转折点变化较小,曲线较平滑有利于高产。200kg/亩以上大豆的生物产量与粒/茎较高,在提高单株荚、粒数的基础上,百粒重对产量的贡献程度相对加强,较高的叶面积系数与干物质积累,尤其是鼓粒期间保持较高的光合势与群体干物质增长量,是取得200kg/亩以上产量的必要条件。 The field experiment showed that the growth dynamics of soybean at different yield levels were compared. The results showed that the summer sowing soybean in the Huang-Huai River Basin could choose the medium-sized or short-stalk cultivars whose growth period was nearly 100 days. Obtain more than 200kg / acre stable high yield. The plant height, the dry weight per plant and the growth of the leaf area accumulated in a dynamic state. The “S” shaped curve with slow seedling stage, fast flowering and podding stage, and slowed down druming stage showed less variation at each inflection point and a smoother curve high yield. On the basis of increasing the pod and grain number per plant, the contribution of 100-grain weight to the yield was relatively enhanced, the higher leaf area coefficient and dry matter accumulation, especially It is the necessary condition for the yield above 200kg / mu to keep the photosynthetic potential and population growth of dry matter during drumming.