本研究的第一部分,介绍了营养生长期中根、茎、分枝、叶的发育过程.本文(研究的第二部分)将重点总结生殖生长期中蕾、花、荚的发育与茎叶节位关系,开花结荚习性以及成熟期间荚果、种子的变化过程.一、材料和方法试验于1976～1979年在扬州砂壤土上进行,1980年又在南京马肝土上对某些问题作了重复观察与试验.田间布置情况见第一报.1976～1979年品种为小青皮和大白皮,1980年为启豆1号. In the first part of this study, the developmental processes of root, stem, branch and leaf during vegetative growth stage were introduced.In the second part of this study, the development of buds, flowers and pods during the reproductive growth period were summarized. Relationship, flowering pod habit and pod and seed during maturity.Materials and Methods Experiments were carried out on sandy loam soil in Yangzhou from 1976 to 1979, and some problems were repeated in Mawangtu, Nanjing in 1980 Observation and test .Field layout see the first reported .1976 ~ 1979 varieties of small green skin and big white skin, in 1980 for Qidou No. 1.