农药学学报2013，Vol.15Issue(4)：464-468,5.DOI:10.3969/j.issn.1008-7303.2013.04.16
毒死蜱微球和乳油在水中的消解动态及其对白纹伊蚊幼虫的毒力
Decline dynamics of chlorpyrifos microspheres and emulsifiable concentrate in water and its toxicity to the larvae of Aedes albopictus
摘要
Abstract
The decline dynamics of different concentration of chlorpyrifos microspheres and chlorpyrifos emulsifiable concentrate(EC)in water,and the sustained toxicity of chlorpyrifos microspheres and chlorpyrifos EC to the 3rd larvae of Aedes albopictus were studied in laboratory.The results showed that the decline rate of chlorpyrifos microspheres was slower than that of chlorpyrifos EC,and the half-life of chlorpyrifos microspheres was longer than that of chlorpyrifos EC.The halflives of chlorpyrifos microspheres and EC were longer at high concentrations than those of the low concentrations.The half-lives of chlorpyrifos microspheres and chlorpyrifos EC at the dosage of 1.2,12,24mg/L were(19.4±2.1)d,(27.8± 1.6)d,(31.0±1.7)d and(12.8 ±1.0)d,(16.1 ±0.9)d,(19.7±1.1)d,respectively.The toxicity of chlorpyrifos microspheres to the 3rd instar larvae of A.albopictus was higher and the duration was longer than that of chlorpyrifos EC.After treatment for 85 days in water,the mortality of mosquito larvae caused by 1.2mg/L chlorpyrifos microspheres was 76.6％,which was higher than that of the same concentration of chlorpyrifos EC(53.3％).The results suggested chlorpyrifos microspheres had good persistence against mosquito larvae.关键词
毒死蜱/微球/乳油/消解/白纹伊蚊/毒杀作用Key words
chlorpyrifos/microspheres/emulsifiable concentrate(EC)/decline/Aedes albopictus/toxicity分类
农业科技引用本文复制引用
杨石有,刘德坤,张翠,张少飞,邓振洲,李正杨,黄彬彬,吴祖建,吴刚..毒死蜱微球和乳油在水中的消解动态及其对白纹伊蚊幼虫的毒力[J].农药学学报,2013,15(4):464-468,5.基金项目
福建省科技厅项目(2009N0018 （）
2009J01071). （）
