A review was presented, starting with the concept of root colonization and colonization ability of Rhizobium, and their effects on competitive nodulation of Rhizobium.

• 本文从根部定殖概念及根瘤菌在土壤中的定殖能力对其竞争结瘤能力的影响着手，介绍了根瘤菌根部定殖的研究概况。