乙唑螨腈与螺螨酯混用对柑橘全爪螨的田间防治效果评价  

Evaluation of control efficacy of cyetpyrafen mixed with spirodiclofen against citrus red mite,Panonychus citri McGregor under field conditions

作　　者：唐涛[1] 赵明平 黄生空 王培[1] 符伟[1] TANG Tao;ZHAO Mingping;HUANG Shengkong;WANG Pei;FU Wei(Institute of Plant Protection,Hunan Academy of Agricultural Sciences,Changsha 410125,China;Bureau of Agriculture and Rural Affairs of Jianghua Yao Autonomous County,Hunan Province,Yongzhou 425500,China)

机构地区：[1]湖南省农业科学院植物保护研究所,长沙410125 [2]湖南省江华瑶族自治县农业农村局,永州425500

出　　处：《植物保护》2021年第4期282-287,297,共7页Plant Protection

基　　金：国家重点研发计划(2016YFD0200505-9)。

摘　　要：柑橘全爪螨Panonychus citri是一种重要的世界性害螨,已对多种常用杀螨剂产生了不同程度的抗性。为有效控制该害螨的危害,本研究于2017年-2018年通过田间小区试验评价了30%乙唑螨腈·螺螨酯SC、30%乙唑螨腈SC、240 g/L螺螨酯SC、1.8%阿维菌素EC及43%联苯肼酯SC对柑橘全爪螨的防治效果及其对柑橘树的安全性。研究结果表明:试验浓度下,叶面喷施1次上述药剂均对柑橘树安全。30%乙唑螨腈·螺螨酯SC及30%乙唑螨腈SC能有效控制柑橘全爪螨危害,速效性好,持效期长达30 d,药后1~30 d的防治效果分别为76.55%~100%和81.21%~98.30%。240 g/L螺螨酯SC和43%联苯肼酯SC对柑橘全爪螨的控制作用较好,速效性一般而持效期可达30 d,药后1~30 d的防治效果分别为69.15%~91.55%和64.63%~88.46%。1.8%阿维菌素EC难以控制柑橘全爪螨危害,速效性较差,持效期约15 d;药后1~30 d对该害螨的防治效果为57.08%~83.39%。综上所述,在柑橘生产实践中,为有效控制柑橘全爪螨为害,应于害螨初发期叶面喷施1次30%乙唑螨腈·螺螨酯SC 75 mg/kg或30%乙唑螨腈SC 100 mg/kg。Citrus red mite,Panonychus citri(McGregor),is one of the most important mites worldwide,which has developed different resistance levels to several commonly used acaricides.In the present study,in order to effectively protect citrus trees from P.citri,field plot experiments were conducted to evaluate control efficacy of cyetpyrafen·spirodiclofen 30%SC,cyetpyrafen 30%SC,spirodiclofen 240 g/L SC,abamectin 1.8%EC and bifenazate 43%SC against P.citri and their safety for citrus trees in 2017-2018.The results showed that a single foliar spray of these acaricides at the tested rates was not phytotoxic to citrus crops.Cyetpyrafen·spirodiclofen 30%SC and cyetpyrafen 30%SC could effectively control this mite,and showed an excellent rapid and long-term suppression up to 30 days after treatment(DAT).The control efficacies of these two acaricides against P.citri were 76.55%-100%and 81.21%-98.30%,respectively,1-30 DAT.P.citri could be better controlled by spirodiclofen 240 g/L SC and bifenazate 43%SC,which showed moderate rapid and long-term control effects up to 30 DAT.The control efficacies of above two acaricides were 69.15%-91.55%and 64.63%-88.46%,respectively,1-30 DAT.However,P.citri was difficult to control by abamectin 1.8%EC,which showed poor rapid control effect and the long-term duration about 15 DAT,with the efficacy of 57.08%-83.39%,1-30 DAT.In summary,these results suggested that one-time foliar spray of cyetpyrafen·spirodiclofen 30%SC at 75 mg/kg or cyetpyrafen 30%SC at 100 mg/kg could be recommended to effectively control P.citri,respectively,during its initial infestation period in citrus production.

关 键 词：柑橘全爪螨 乙唑螨腈 螺螨酯 防治效果 

分 类 号：S436.661.23[农业科学—农业昆虫与害虫防治]