关键词: 双硫磷, 蚊虫, 颗粒剂

Abstract: Objective To study the mosquito larvae management strategy in Shanghai City stream river and the effect,long-lasting activity of abate granules against mosquito larvae.Methods Observing the effect and efficiency time of abate granules against mosquito larvae in 2 concentrations(2g/m² and 1g/m²).Results The decreasing rate of 2 concentrations in 24h were,90.2% and 90.9%,respectively both RPIs were less than 50,the effect was obvious,long-lasting active time was 12 days at rate of 2 g/m²,5 days at 1 g/m ².Conclusion The granules possesse good activity mosquito larvae control in stream river,the effect at rate of 2 g/m² is better than at 1 g/m².The lasting time of granules is longer than emulsion.