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据报道球形芽孢杆菌1593、2297、2362株,对库蚊和按蚊的幼虫均有杀灭作用,但作用只能保持数周或数月。因此作者在实验室和人工建造的污水池中进行了该菌1593株对致倦库蚊幼虫的滞留杀灭作用的研究。实验先以保存于昆虫室的第3～4龄致倦库蚊幼虫25条置于含100ml蒸馏水塑料杯内,分别加入不同稀释度的球形芽孢杆菌悬液,每个稀释度重复3杯,培养48h,与对照
Bacillus sphaericus 1593, 2297, 2362 strains have been reported to kill the larvae of Culex and Anopheles both for a few weeks or months. Therefore, the author in the laboratory and artificial sewage tank constructed 1593 strains of the bacteria on the Culex pipiens pallens larvae of the killing effect. In the experiment, 25 larvae of 3rd to 4th instar larvae of Culex pipiens pallens deposited in the insect room were placed in plastic cups containing 100 ml of distilled water, respectively. Bacillus sphaericus suspensions were added at different dilutions, and each dilution was repeated for 3 cups. 48h, and control