从西瓜和柑桔等作物根际中分离到的 B11、B14、B19和 B2 4等芽孢杆菌菌系对水稻纹枯病菌的生长和菌核的萌发有较强的抑制作用。其中 B11和 B14对水稻纹枯病的防治有一定的效果。它们在室内的防效分别是 6 0 .5 %和 6 7.4% ,在大田的防效分别为 5 4 .6 %和 5 2 .1%。 Bacillus strains B11, B14, B19 and B2 4 isolated from the rhizosphere of crops such as watermelon and citrus had a strong inhibitory effect on the growth of R. solani and the germination of sclerotia. Among them, B11 and B14 had some effects on the control of rice sheath blight. Their indoor control efficiency was 60.5% and 6 7.4%, respectively. Their control efficiency in the field was 54.6% and 52.1% respectively.