Among all the rhizobial strains 12 were nodulated on all of the 4 leguminous species,29 on locust, silk tree and soybean,and 4 on locust,silk tree and pea simultaneously.

• 其中有12个菌株可同时在这4种豆科植物上结瘤，29个菌株可同时在刺槐、合欢和大豆上结瘤，4个可同时在刺槐、合欢和豌豆上结瘤，说明豆科树种根瘤菌具有较广泛的共生寄主范围。