9种杀虫剂对番茄潜叶蛾的防治效果评价

【目的】 筛选应急防控番茄潜叶蛾的绿色、高效农药,为防止进一步扩散为害提供指导。【方法】 选择9种内吸性杀虫剂,分2个浓度梯度,总计在田间设置18个药剂处理和1个清水对照,在药后1、3、7和14 d调查虫口,计算虫口减退率及防效,筛选绿色高效的农药及最佳药剂浓度。【结果】 60 mL /667m²的6%阿维·氯苯酰SC、42 mL /667m²24%甲氧虫酰肼SC、7.5 mL/667m²的20%氯虫苯甲酰胺SC 3种药剂对番茄潜叶蛾的防治效果和虫口减退率均在90%以上,后两者在后期效果最为明显,具有持效性。3种药剂在药后14 d防效分别为93.6%、93.16%和93.72%,虫口减退率分别为91.20%,90.59%和91.36%。37.5 mL /667m²的0.3%印楝素EW在整个过程防效最低,药后14 d防效为38.04%,其减退率仅为14.79%。【结论】 轮换使用60 mL/667m²的阿维·氯苯酰SC、42 mL /667m² 24%甲氧虫酰肼SC、7.5 mL /667m²的20%氯虫苯甲酰胺SC在生产上。

Control Effects of 9 Pesticides on Tomato Leafminer,Tuta absoluta (meyrick)

【Objective】 In Xinjiang in the hope of providing techniques to prevent it from further spreading. 【Methods】 2 doses of 9 kinds of insecticides were selected, and 18 field treatments and 1 water control were applied in the field. The insect population survey was conducted at 1 d, 3 d, 7 d, and 14 d after the treatment to calculate the insect population reduction rate and control effect to screen green and efficient pesticides. 【Results】 The field efficacy test results showed that: using 60 mL / 667m² of Avi chlorobenzoyl SC, 42 mL / 667m² of 24% methacylhydrazine SC, and 7.5 mL / 667m² of 20% chlorantraniliprole SC, the control effect for the tomato leaf miner disease was more than 90%, and the latter two had the most obvious effect in the later stage, which was also persistent. 0.35% Azadirachtin EW at 37.5 mL / 667m² had the lowest prevention effect in the whole process. 【Conclusion】 60 mL / 667m² of Avi chlorobenzoyl SC, 42 mL / 667m² of 24% methicylhydrazine SC, and 7.5 mL / 667m² of 20% chlorantraniliprole SC should be used alternately among the pharmacy.