214菌株系浅灰链霉菌230经紫外线照射后获得的突变菌株。1988年我们用其摇瓶培养液进行二级发酵所生产的菌粉(室内杀螺毒力测定,钉螺死亡率在95％以上),进行现场杀螺试验,同时观察其对鱼类、植被的影响。 浸泡现场是在湖洲上人工挖掘水池,分别将各组菌粉用量洒入水中,再给各组投放装有活螺50只的尼 214 strain Streptomyces lividans 230 mutant strains obtained after UV irradiation. In 1988, we used the shake flask culture liquid to carry out the secondary fermentation to produce the powder (indoor toxin determination, the snail death rate above 95%), the field snail test, at the same time to observe the fish, vegetation influences. Soak the scene is in the lakes on the artificial excavation of the pool, respectively, the amount of each group of sprinkling powder spilled into the water, and then put into each group fitted with 50 live snail