摘要
目的:观察10年来主要应用苏云金杆菌以色列变种地方株(B.t-187)控制蚊虫的效果。方法:按WHO推荐的方法,在实验室进行生物测定,以确定B.t-187乳剂使用浓度,然后进行现场灭蚊效果观察。结果:使用效价为380~460国际单位,剂量为1~2ml/m2的B.t-187乳剂能有效控制蚊约和成蚊密度,成蚊平均相对叮咬密度比处理前下降89.4%,并降低了蚊虫的季节性高峰。结论:该生物制剂对按蚊、库蚊、伊蚊幼虫的毒杀效果颇佳,蚊幼尚无产生抗性的迹象。
This paper reports the efficacy of Bacillus thuringiensis var israeleusis 187 for controlling mosquitoes in Sha-shi urban area during 1986 to 1995. The results showed that mosquitoescould be effectively controlled with emulsion of Bacillus thuringiensis var israeleusis 187 at a doseof 1-2ml/m2 once a 10-day interval. As compared with pretreatment. The mean man-biting rate ofmosquitoes was reduced by 89. 4 %.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
1997年第6期424-427,共4页
Chinese Journal of Vector Biology and Control