中国媒介生物学及控制杂志

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生物杀虫剂的现场效果观察

汤永康1;俞小林1;任樟尧1;许利国2   

  1. 1浙江省疾病预防控制中心 杭州310009;2萧山市卫生防疫站
  • 出版日期:2001-08-20 发布日期:2001-08-20

Observation on the Locale Apply Effect of Biotic Pesticides,H-14 and 2362

TANG Yong-kang; YU Xiao-lin; REN Zhang-yao; et al   

  1. Zhejiang Provincial Center for Disease Prevent and Control(CDPC),Hangzhou 310009
  • Online:2001-08-20 Published:2001-08-20

摘要: 目的:观察生物杀虫剂对蚊幼虫和蛹的现场杀灭效果和影响因素,评价H-14和2362两种生物杀虫剂的实际应用前景。方法:选择野外具有一定蚊幼虫和蛹密度的滋生场所,采用液体喷雾方法,水面喷雾施药,观察蚊幼虫和蛹的下降率;同时观察水生植物和鱼类的死亡等影响因素。结果:H-14生物杀虫剂施药后3和7d,校正蚊幼密度下降率分别为:Ⅰ~Ⅲ龄为98.24%和98.30%,经检验,χ2=289.24和293.59,P<0.05。2362生物杀虫剂施药后第3d和第7d,校正蚊幼密度下降率分别为98.48%和83.33%,经检验,χ2=332.15和204.74,P<0.05。对Ⅳ~蛹的杀灭率均为100%。两种生物杀虫剂的杀灭效果比较,H-14优于2362,χ2=16.60,P<0.05。结论:两种生物杀虫剂对蚊幼虫具有明显的杀灭作用,但与毒力指数、现场密度和使用剂量有关;对无法清除的小型积水和住宅区周围环境蚊虫滋生场所,具有较好的应用前景;对鱼类和水生植物未发现侵害现象,具有良好的安全性。

关键词: 生物杀虫剂, 效果

Abstract: Objective:To study on the local apply effect and influence of the biotic pesticides,H-14 and 2362.To appraise its future locale apply.Methods:To select the nature habitant of mosquito larva density,to spray the pesticides to the water.To observe mosquito larva density degression rate,both hydrophytes and fishes death rate.Results:Biotic pesticides H-14 was sprayed,at the 3rd or 7th day,mosquito larva,the density degression rate Ⅰ-Ⅲ age was 98.24% and 98.30%(χ2= 289.24 and 293.59,P<0.05).2362 was spayed,at the 3rd or 7th day,the density degression rate of Ⅰ-Ⅲ age was 98.48 % and 83.33%,for Ⅳ-pupa was 100%(χ2=332.15 and 204.74,P<0.05).Comparison of the effects between H-14 and 2362,the former outbalanced the latter(χ2= 16.60,P<0.05).Conclusion:The effects of both biotic pesticides were noticeable,which were closely connected with mosquito larva density and the toxicity and use dose of the pesticides,but not both hydrophytes and fishes death.