摘要
研究了蚊蝇醚及添加有机硅对各发育虫期B型烟粉虱的毒力和田间药效.室内试验结果表明:蚊蝇醚对烟粉虱具有高杀卵活性和较好的杀若虫作用,但对成虫的毒力较低;成虫接触经蚊蝇醚处理的茄子叶片48h后,在无药叶片上的产卵量无明显变化,但卵的孵化率显著降低,蚊蝇醚具有优异的经卵巢杀卵活性.有机硅助剂对蚊蝇醚没有表现出明显的增效作用.田间药效试验发现,蚊蝇醚对茄子上的烟粉虱若虫有较佳的防治效果,但对成虫的防治效果较差.
Laboratory bioassay and field experiment were conducted to evaluate the toxicity and field control efficacy of pyriproxyfen and its mixture with organosilicon to B-biotype Bemisia tabaci.The laboratory bioassay indicated that pyriproxyfen had strong ovicidal activity against B.tabaci and high activity against B.tabaci nymphs,but had low toxicity to B.tabaci adults.After the adults were exposed to pyriproxyfen-treated eggplant leaves for 48 h,their oviposition on untreated eggplant leaves was not affected,but the egg hatching rate was sharply lowered,suggesting that pyriproxyfen had high transovarial activity.Organosilicon auxiliary agent did not show any synergistic effect when mixed with pyriproxyfen.Field trials showed that pyriproxyfen could effectively control the B.tabaci nymphs on eggplants,but could not effectively control the adults.
出处
《应用生态学报》
CAS
CSCD
北大核心
2010年第4期993-999,共7页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划项目(2006CB102005
2009CB119005)
国家"十一五"科技支撑计划项目(2008BADA5B06
2006BAD08A02)
农业公益性行业科研专项(200803005)
浙江省宁波市科技局项目(2006C10026)资助
关键词
B型烟粉虱
蚊蝇醚
有机硅助剂
经卵巢杀卵
毒力
防治效果
Bemisia tabaci B-biotype
pyriproxyfen
organosilicon auxiliary agent
transovarial activity
toxicity
control efficacy.
