不同作物的根际有其特定的微生物群落，这一点已有论述。研究不同作物的根际微生物群落特点及其规律，对于探讨作物连作障碍的微生物机理，以及用微生态控制方法来克服连作障碍有着重要的意义。本文对７种蔬菜根际微生物的组成和变化进行了分析，并着重对黄瓜、大蒜根际优势菌进行了分析比较，探讨了蔬菜根际微生物的消长规律 The rhizosphere of different crops has its own specific microbial community, as discussed. Studying the characteristics and laws of rhizosphere microbial community in different crops is of great significance to discuss the microbial mechanism of crop continuous cropping obstacle and to overcome the continuous cropping obstacle by using the micro-ecological control method. In this paper, the composition and changes of rhizosphere microbes in seven kinds of vegetables were analyzed. The dominant rhizosphere bacteria in cucumber and garlic were analyzed and compared, and the growth and decline of microorganisms in the rhizosphere of vegetables