Among them, the strains, named ZB - 1 ,ZB - 2and ZB - 6, showed obvious antagonistic activity to Ralstonia so-lanacearum of tomato.

• 采用含菌平板抑菌圈测定法,筛选出了3株对番茄青枯菌具有较强拮抗力的细菌菌株ZB-1、ZB-2和ZB-6。