球形芽孢杆菌C_（3－41）地方株制剂控制城市致乏库蚊的现场效果评价

Large Scale Field Trials of Bacillus sphaericus (strain C_(3-41)) Local products against Culex quinquefasciatus Mosquito Larvaes in Wuhan City

笔者从１９９３年５月始在武汉市水果湖地区应用球形芽孢杆菌Ｃ（３－４１）地方株制剂，进行大面积控制致乏库蚊的现场研究。结果表明，用３ｍｌ／ｍ２球形芽孢杆菌Ｃ（３－４１）乳剂，对大型致乏库蚊孳生地每１０天处理１次，包括水塘、水沟、水槽及水坑；另用３ｇ／ｍ２块剂每月处理１次水缸和小容器等，可使幼虫密度下降３８～９９％，并能有效地控制成蚊密度和削平致乏库蚊成蚊的季节高峰。

Large scale field trials of Bacillus sphaericus C_(3-41) local products against Culex quinquefasciatus was carried out in Wuhan City. The results showed that 88～99% reduction of larval density was obtained with rate of 3ml/m2 liquid formulation applied in large breeding sites,including ponds,ditches once ten days and with 8g/m2 briquette formulation applied in small breeding sites,including water jars and pits once month.Adult density showed a obvious reduction and seasonal peak of adults was controlled in treated area.