不同类型杀虫剂对柑橘木虱的田间防治效果评价

为了有效防治柑橘木虱,避免引发柑橘黄龙病,2015~2016年采用田间小区试验探索了有机磷酸酯类、拟除虫菊酯类、新烟碱类、昆虫生长调节剂类、线粒体电子传递抑制性杀虫剂和特拉姆酸衍生物等6类9种杀虫剂对柑橘木虱的防治效果。结果表明:2.5%高效氟氯氰菊酯EW、100 g/L联苯菊酯EC、5%啶虫脒EC和21%噻虫嗪SC对柑橘木虱的速效性较好,药后3 d防治效果就达81%以上;而15%唑虫酰胺SC和22.4%螺虫乙酯SC对柑橘木虱的持效期最长,药后15 d防治效果仍在90%以上,其次为100 g/L吡丙醚EC和2.5%高效氟氯氰菊酯EW,药后15 d防治效果仍在88%左右;25%噻嗪酮WP和40%毒死蜱EW对柑橘木虱的的防治效果相对较差,药后3~15 d防治效果均未超过87%。在柑橘生产实践中,建议轮换使用高效氟氯氰菊酯、联苯菊酯、唑虫酰胺和螺虫乙酯防治柑橘木虱。

Evaluation of Control Efficacy of Different Insecticides on the Asian Citrus Psyllid Diaphorina citri (Kuwayama) under Field Conditions

As for effective control of Asian citrus psyllid Diaphorina citri (Kuwayama) in order to avoid occurrence of citrus Huanglongbing (HLB) disease, field plot experiments were conducted to investigate control efficacy of 9 insecticides from 6 series of including organophosphates, pyrethroids, neonicotinoids, insect growth regulators, METI insecticides, and tetramic acid derivatives against D. citri from 2015 t0 2016. The results showed that the efficiency of the 2.5% beta-cyfiuthrin EW, 100 g/L bifenthrin EC, 5% acetamiprid EC and 21% thiamethoxam SC were effective for D. citri, the control effect was more than 81% 3 days after treatment. And the 15% tolfenpyrad SC and 22.4% spirotetramat SC were the most effective with control effect of more than 90% 15 days after treatments.The second was 100 g/L pyriproxyfen EC and 2.5% beta-cyfluthrin EW with control effect of 88% 15 days after treatments. But 25% buprofezin WP and 40% chlorpyrifos were less effective, the control effect was not more than 87% during 3~15 days after treatment. It is recommended that a rotation system using beta-cyfluthrin, bifenthrin, tolfenpyrad and spirotetramat should be established to control of D.citri in the production of citrus.