采用ＲＡＰＤｓ分子标记研究２８株中国大豆根瘤菌的遗传多样性，１２个随机引物扩增产物电泳图谱经计算机聚类分析，得出反映菌株基因组序列相似水平的树状图。由树状图得知：ＲＡＰＤｓ分析结果可以准确地将供试大豆根瘤菌分为快、慢两群。每群中又可以再划分为两个亚群。本研究的结果还表明来源于新疆的一群快生型大豆根瘤菌显著不同于其它地区的快生型大豆根瘤菌菌株，是独立的一群，与陈文新等用表型性状的研究方法得出的结论一致。 RAPDs molecular markers were used to study the genetic diversity of 28 Chinese soybean rhizobia strains. The phylogenetic tree of 12 random primers was analyzed by computer. From the dendrogram: RAPDs analysis results can accurately test soybean Rhizobia divided into fast and slow two groups. Each group can be divided into two subgroups. The results of this study also showed that a group of fast-growing soybean rhizobia originated in Xinjiang was significantly different from the fast-growing soybean rhizobia strains in other regions and was an independent group, which was the conclusion of the research method with phenotypic traits such as Chen Wenxin Consistent.