扑虱灵、蚊蝇醚对烟粉虱若虫和卵生物活性的研究  

Biological activities of buprofezin and pyriproxyfen on the eggs and nymphs of Bemisia tabaci

作　　者：徐建陶[1,2] 孙定炜[3] 赵勤超 施庆 沈晋良[1] 

机构地区：[1]南京农业大学农业部病虫监测与治理重点开放实验室植物保护学院农药学系,南京210095 [2]上海市农产品质量安全中心,上海200335 [3]海南省疾病预防控制中心,海口570203 [4]崇明县绿色食品管理中心,上海202150

出　　处：《上海农业学报》2011年第2期125-128,共4页Acta Agriculturae Shanghai

基　　金：国家高技术研究发展计划"863"计划项目(2002AA244041)资助

摘　　要：用浸叶法和浸渍法测定了扑虱灵、蚊蝇醚对以棉花为寄主饲养的烟粉虱卵和若虫的生物活性。结果表明:扑虱灵对1龄和4龄若虫毒力的LC_(50)值分别为1.3、128.8 a.i.mg/L,浓度为100～1600 a.i.mg/L的扑虱灵对0～1日龄卵孵化几乎无抑制作用;蚊蝇醚浸叶法和浸渍法使用对0～1日龄卵毒力的LC_(50)值分别为0.0227、0.0011 a.i.mg/L,浓度为7.8×10^(-3)～16.0 a.i.mg/L的蚊蝇醚对4龄若虫羽化几乎无抑制作用。用0.5、5.0 a.i.mg/L蚊蝇醚浸渍处理对3日龄以前的卵孵化具有很强的抑制作用,对3日龄以后的卵几乎无抑制作用;烟粉虱雌成虫接触10 a.i.mg/L的蚊蝇醚,48 h后转移到无药植株上,其对0～2、2～4、4～6日龄卵的孵化具有很强的抑制作用,孵化率分别为(8.3±2.3)%、(0.1±0.4)%、(7.5±9.7)%,而对6～8日龄卵无抑制作用。The biological activities of buprofezin and pyriproxyfen on the nymphs and eggs of Bemisia tabaci on cotton host plants were determined by the methods of dipping the leaves and the egginfested leaves into buprofezin and pyriproxyfen diluents for 10 s.The results showed that the toxicity of buprofezin to the 1st instar and 4th instar nymphs was respectively 1.3 and 128.8 a.i.mg/L in LC_（50）,and buprofezin diluent of 100 - 1 600 a.i.mg/L almost had no inhibiting effect on hatching of the 0 - 1 -day-old eggs.The LC_（50） of pyriproxyfen to the 0-1 -day-old eggs was 0.0227 a.i.mg/L by dipping the leaves into pyriproxyfen diluent and 0.0011 a.i.mg/L by dipping the egg-infested leaves into pyriproxyfen diluent,and pyriproxyfen diluent of 7.8×10^（-3）- 16.0 a.i.mg/L almost had no inhibiting effect on emergence of the 4th-instar nymphs.Dipping the egg-infested leaves into pyriproxyfen diluent of 0.5 or 5.0 a.i.mg/L had a very high inhibiting effect on hatching of the 0-3-day-old eggs but little inhibiting effect on hatching of the over-3-day-old eggs.When the female adults were exposed to cotton plants treated with 10 a.i.mg/L pyriproxyfen for 48 h and then transferred onto the untreated plant leaves,the eggs oviposited by them were severely inhibited in hatching,with the hatchability being （8.3±2.3）%for 0-2-day-old eggs,（0.1±0.4）%for 2 - 4-day-old eggs and（7.5±9.7）%for 4- 6-day-old eggs,while the 6 - 8-day-old eggs were not affected.

关 键 词：烟粉虱 扑虱灵 蚊蝇醚 生物测定 

分 类 号：S482.3[农业科学—农药学] S433.3[农业科学—植物保护]