[目的]评价8种杀虫剂对藜麦田甜菜龟叶甲的防治效果,为荒漠绿洲生态区甜菜龟叶甲的防控提供科学依据.[方法]采用茎叶喷雾法进行田间药效试验.[结果]供试8种杀虫剂在试验剂量范围内对藜麦安全无药害.药后1、3 d时各杀虫剂处理对甜菜龟叶甲的防治效果为3.87％～46.66％和15.60％～62.07％,其中25 g/L高效氯氟氰菊酯EC 15.00 g a.i./hm2对甜菜龟叶甲的防治效果显著高于其他杀虫剂处理.药后7 d时各杀虫剂处理对甜菜龟叶甲的防治效果为52.46％～73.56％,其中25 g/L高效氯氟氰菊酯EC 15.00 g a.i./hm2、70％吡虫啉WG 42.00 g a.i./hm2和20％啶虫脒WP 90.00 g a.i./hm2对甜菜龟叶甲的防治效果达到70％以上.[结论]25 g/L高效氯氟氰菊酯EC、70％吡虫啉WG和20％啶虫脒WP对甜菜龟叶甲的防治效果较好,建议在生产中交替轮换使用.
Abstract
[Aims]To evaluate the control efficacy of 8 insecticides on Cassida nebulosa in quinoa fields,and to provide scientific basis for the control of C.nebulosa in desert oasis ecological area.[Methods]The field efficacy trial was carried out by stalk and leaf spray method.[Results]The tested 8 insecticides were safe and had no harm to quinoa within the experimental dose range.The control efficiency of the insecticides was 3.87％-46.66％and 15.60％-62.07％on day 1 and 3 after treatment,in which that of lambda-cyhalothrin 25 g/L EC 15.00 g a.i./ha was significantly higher.On day 7 after treatment,the control efficiency of the tested insecticides was 52.46％-73.56％,and that of lambda-cyhalothrin 25 g/L EC 15.00 g a.i./ha,imidacloprid 70％WG 42.00 g a.i./ha and acetamiprid 20％WP 90.00 g a.i./ha was more than 70％.[Conclusions]lambda-Cyhalothrin 25 g/L EC,imidacloprid 70％WG and acetamiprid 20％WP have good control effect on C.nebulosa,and it is recommended to use them alternately in production.
维普
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