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.