摘要
【目的】柑橘始叶螨是茶园中新发现的一种害螨,本年度在试验茶园严重发生,为有效地防治,本研究开展了5种药剂对茶园柑橘始叶螨的田间防效试验。【方法】试验采用田间喷雾的方法进行。【结果】1.5%除虫菊素EW 500倍液、8%虫螨腈ME 750倍液、15%茚虫威EC 2500倍液、5%双丙环虫酯DC 1800倍液和11.8%甲维盐·唑虫酰胺SC 1500倍液对柑橘始叶螨的成若螨和卵均具有较好的防治效果,对成若螨药后3 d校正防效依次为96.25%、90.79%、93.97%、81.82%、78.73%,药后7 d校正防效依次为83.43%、67.17%、79.15%、81.49%、73.06%。【结论】5种药剂均可作为茶园防治柑橘始叶螨的供选药剂,其中以1.5%除虫菊素EW500倍液效果最优。
【Objective】Efficacies of 5 pesticides to control the recently found pest,Eotetranychus kankitus Ehara,that caused severe damage to tea plantations in China,were evaluated.【Method】An experimentation was conducted in the field with the selected pesticides sprayed on the tea bushes infested by the spider mites to determine the control efficacies of the agents.【Result】All 5 tested insecticides,i.e.,pyrethrins 1.5%EW 500x solution,chlorfenapyr 8%ME 750x solution,indoxacarb 15%EC 2500x solution,biprocyclodee 5%DC 1800x solution,and emamectin benzoate·tolfenpyrad 11.8%SC 1500,could effectively deter damage on tea bushes by E.kankitus.The corrected control efficacies of these pesticides on the spider mites in 3d after treatment were 96.25%,90.79%,93.97%,81.82%,and 78.73%,respectively;while in 7d after treatment,the efficacies were 83.43%,67.17%,79.15%,81.49%,and 73.06%,respectively.【Conclusion】All 5 applied pesticides effectively put the E.kankitus infestation under control in the field.Pyrethrins 1.5%EW 500x solution appeared to be the most effective agent among them.
作者
陈世春
江宏燕
王晓庆
CHEN Shi-chun;JIANG Hong-yan;WANG Xiao-qing(Tea Research Instituteof Chongqing Academy of Agricultural Sciences,Yongchuan,Chongqing 402160,China)
出处
《茶叶学报》
2023年第2期60-64,共5页
Acta Tea Sinica
基金
国家茶叶产业技术体系(CARS-19)
重庆市农业科学院青年创新团队项目(NKY-2019QC05)。
关键词
茶园
柑橘始叶螨
除虫菊素
田间药效
Tea plantation
Eotetranychus kankitus
pyrethrins
field efficacy test
