1983年,国际干旱农业研究中心,在温室内试验,用测量乙炔还原和氮素含量的方法,衡量三个蚕豆品种各时期共生固氮姿态与一些生长参数的关系。基因型在同氮酶活性中的差异,在生长初期是明显的,但随着鼓荚期的开始差异就变得很小。直到开始开花,固氮酶活性与叶面积成显著的正相关。绝大多数生长参数与植株氮素含量的相关较与固氮酶活性的相关显著。只有在植株直线生长时期,氮素含量和固氮酶活性的相关才是高度相关。在相对生长率和净同化率上品种间没有差异,并且两者与固氮酶活性的相关很差。可是,在初期绝对生长率与氮素含量高度相关。固氮酶活性在结荚开始后出现一个短暂的高峰。直到这时,植株氮素的大部分是在叶内。在籽粒充实阶段,大量的氮素是从叶片和茎中流到果荚内。这里对这些结果所暗示出的蚕豆改良作了讨论。 In 1983, IADC tested in greenhouse and measured the relationship between symbiotic nitrogen fixation and some growth parameters of three faba bean varieties in different periods by measurement of acetylene reduction and nitrogen content. Differences in genotypes with nitrogenase activity were evident during the early stages of growth, but became less pronounced at the beginning of the pod stage. No nitrogenase activity was positively correlated with leaf area until flowering started. The correlation between most of the growth parameters and plant nitrogen content was significantly correlated with nitrogenase activity. Only in the linear growth stage of plants, nitrogen content and nitrogenase activity is highly correlated. There was no difference between the relative growth rate and the net assimilation rate, and the correlation between them and nitrogenase activity was very poor. However, the initial absolute growth rate was highly correlated with nitrogen content. Nitrogenase activity showed a transient peak after the start of pod. Until then, most of the plant nitrogen was in the leaves. During the grain filling stage, large amounts of nitrogen flow from the leaves and stems into the pods. Here is a discussion of the improvements in broad beans suggested by these results.