首页|常用杀虫剂对滇西南稻区白背飞虱种群的室内和田间药效评价

常用杀虫剂对滇西南稻区白背飞虱种群的室内和田间药效评价

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[目的]明确滇西南稻区白背飞虱种群对7种杀虫剂的抗药性水平和7种杀虫剂对白背飞虱的田间防治效果,并对白背飞虱主要天敌蜘蛛和黑肩绿盲蝽的安全性进行评价,为田间防治白背飞虱的药剂选用提供参考依据.[方法]利用稻茎浸渍法开展白背飞虱对7种杀虫剂的室内抗药性监测,测定室内毒力LC50和抗性倍数RR;采用植保无人机的施药方式对7种杀虫剂开展防治白背飞虱的田间药效试验,分析药后3和7 d白背飞虱的百株虫量和校正防效,以及天敌蜘蛛和黑肩绿盲蝽的百株虫量和校正虫口减退率.[结果]抗药性监测:与敏感种群比较,10%三氟苯嘧啶SC、25%吡蚜酮SC、60%烯啶虫胺SP、22%氟啶虫胺腈SC、25%噻虫嗪WG、25%吡虫啉SP和25%呋虫胺OD对滇西南白背飞虱种群的LC50分别为0.18、1.31、0.84、2.40、0.66、0.96和6.43 mg/L,抗性倍数RR分别为0.42、2.74、3.07、4.83、6.87、8.81和31.99倍.该种群对呋虫胺为中等抗性,对吡虫啉和噻虫嗪为低抗性,对其余药剂敏感.田间药效试验:7种杀虫剂药后7 d对白背飞虱的校正防效为85.35%~95.91%,其中氟啶虫胺腈的防效相对较差,其余药剂间防效差异不显著(P>0.05,下同).天敌安全性评价:药后7 d白背飞虱的主要天敌蜘蛛类和黑肩绿盲蝽的校正虫口减退率分别为30.37%~51.10%和43.90%~86.10%,7种药剂对蜘蛛类和黑肩绿盲蝽均会产生药害,其中对蜘蛛相对较安全,对黑肩绿盲蝽相对欠安全.[结论]7种杀虫剂田间防治滇西南白背飞虱种群效果良好,推荐作为常用田间防治药剂使用.其中,吡蚜酮和三氟苯嘧啶防效更佳,对天敌安全性较好.应注意将呋虫胺与其他药剂轮换使用.
Indoor and field control effect of common insecticides against Sogatella furcifera in southwest Yunnan rice area
[Objective]In order to provide a reference basis for the selection of insecticides for field control of white backed planthopper,So-gatella furcifera(WBPH),the resistance levels of WBPH population to 7 kinds of insecticides in southwest Yunnan rice area,as well as the field control effects of these insecticides against WBPH were studied,and the safety of insecticides against the main natural enemies of WB-PH,spider and Cyrtorhinus lividipennis,was evaluated.[Method]The research group used the method of rice stem impregnation to monitor the indoor resistance of WBPH to 7 kinds of insecticides,and analyzed the indoor toxicity(LC50)and resistance Ratio(RR).Meanwhile,the research group conducted field efficacy test of 7 kinds of insecticides against WBPH by using plant protection UAV to spray,and analyzed the WBPH's number of 100 plants and corrected control effect on the 3rd day and 7thday after treatment,the same as natural enemies.[Result]Resistance monitoring:Compared with sensitive populations,the LC50 of triflumezopyrim 10% SC,pymetrozine 25% SC,nitenpyram 60% SP,sulfoxaflor 22% SC,thiamethoxam 25% WG,imidacloprid 25% SP and dinotefuran 25% OD to WBPH populations in southwest Yunnan were 0.18,1.31,0.84,2.40,0.66,0.96 and 6.43 mg/L,and RR were 0.42,2.74,3.07,4.83,6.87,8.81 and 31.99,respectively.The WBPH population in southwest Yunnan had developed medium resistance to dinotefuran and low resistance to imidacloprid and thiamethox-am,while other insecticides were sensitive.Field efficacy test:The corrected control effects of the 7 kinds of insecticides against WBPH were 85.35% -95.91% in the 7th day after treatment.The control effect of sulfoxaflor was relatively poor,and there was no significant difference among other insecticides.Natural enemy safety evaluation:The corrected population decline rates of the natural enemies and C.lividipennis were 30.37% -51.10% and 43.90% -86.10% in the 7thday after Phosphide treatment.All the insecticides were harmful to spider and Cyrtorhinus lividipennis,however spiders were relatively safe than C.lividipennis.[Conclusion]The results have shown good field control effect of the 7 kinds of insecticides against WBPH in southwest Yunnan,and they can be recommended as commonly used insecticides.Espe-cially,pymetrozine and triflumezopyrim have better control effects and safer for natural enemies than the others,and dinotefuran should be used in rotation.

Sogatella furciferaInsecticideField control effectResistance monitoringEnemy safety evaluation

金灿、杨林仙、罗茜艳、陆静、崔凯、赵亚梅、尹定云、李向永、刘莹、赵雪晴、谌爱东、尹艳琼

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云南大学资源植物研究院,昆明 650504

云南省农业科学院农业环境资源研究所/云南省农业跨境有害生物绿色防控重点实验室,昆明 650205

双江县植保植检站,云南双江 677399

玉溪市烟草公司峨山县分公司,云南峨山 653200

江苏克胜集团股份有限公司,江苏建湖 224700

临沧市植保植检站,云南临沧 677099

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白背飞虱 杀虫剂 田间药效 抗药性监测 天敌安全性评价

2024

西南农业学报
四川,云南,贵州,广西,西藏及重庆省(区,市)农科院

西南农业学报

CSTPCD北大核心
影响因子:0.679
ISSN:1001-4829
年,卷(期):2024.37(10)