茎瘤田菁(S.rostrata),又名毛萼田菁或具啄田菁,为豆科田菁属草本植物。它形态特征与普通田菁不同点是茎与分枝着生茎瘤能固氮。原产非洲,适宜在高温高湿环境中生长。80代年初从菲律宾引入我国。1987年以来我们对茎瘤田菁在江苏沿海地区的生长特性、固氮量、种子含胶品质等进行了试验研究,证实了它的茎瘤固氮率高,固 S. rostrata (S. rostrata), also known as brown calyx cyperus or Pei Tian Jing, for the leguminosae genus herbs. Its morphological characteristics are different from ordinary Sesamum stem and branch stalk tumor can nitrogen fixation. Native Africa, suitable for growth in high temperature and humidity environment. 80 years ago from the Philippines into China. Since 1987, we have carried out experimental research on the growth characteristics, nitrogen fixation capacity and seed-containing quality of Stem Stems in the coastal areas of Jiangsu Province. The results show that it has high nitrogen fixation rate