3种微生物农药对广东草地贪夜蛾的田间防治效果  

Field control efficacy of three microbial pesticides against Spodoptera frugiperda in Guangdong province

作　　者：陈培华 池艳艳 徐淑[2] 陈炳旭[2] CHEN Peihua;CHI Yanyan;XU Shu;CHEN Bingxu(Technical Service Centre of Dongchong Town,Nansha District,Guangzhou 511543,China;Plant Protection Institute,Guangdong Academy of Agricultural Sciences,Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs,Guangdong Provincial Key Laboratory of High Technology for Plant Protection,Guangzhou 510640,China)

机构地区：[1]广州市南沙区东涌镇农业技术服务中心,广州511453 [2]广东省农业科学院植物保护研究所,农业农村部华南果蔬绿色防控重点实验室,广东省植物保护新技术重点试验室,广州510640

出　　处：《世界农药》2022年第6期49-53,共5页World Pesticide

基　　金：广东省现代农业产业技术体系绿色发展共性关键技术研发创新团队项目(2021KJ112)。

摘　　要：2020-2021年,采用田间小区试验评价了甘蓝夜蛾核型多角体病毒、斜纹夜蛾核型多角体病毒、球孢白僵菌对广东地区草地贪夜蛾的防治效果。结果表明,20亿PIB/mL甘蓝夜蛾核型多角体病毒悬浮剂50 g/666.7 m^(2)、10亿PIB/m L斜纹夜蛾核型多角体病毒悬浮剂225 g/666.7 m^(2)、100亿孢子/g球孢白僵菌可分散油悬浮剂150 g/666.7 m^(2)的2年试验药后7 d防效为80.91%~84.74%,20亿PIB/mL甘蓝夜蛾核型多角体病毒悬浮剂60 g/666.7 m^(2)的防效2020年达90.42%、2021年达91.78%,与200 g/L氯虫苯甲酰胺悬浮剂15 g/666.7 m^(2)的防效相当。建议在草地贪夜蛾种群密度低时使用20亿PIB/m L甘蓝夜蛾核型多角体病毒悬浮剂50~60 g/666.7 m^(2)、10亿PIB/mL斜纹夜蛾核型多角体病毒悬浮剂225 g/666.7 m^(2)、100亿孢子/g球孢白僵菌可分散油悬浮剂150 g/666.7 m^(2)进行防治;在种群密度高时,该3种微生物农药应与其他速效性较好的药剂搭配使用。In order to evaluate field control efficacy of Mamestra brassicae nucleopolyhedrovirus(Mb NPV),Spodoptera litura nucleopolyhedrovirus(SiNPV)and Beauveria bassiana(BA)against Spodoptera frugiperda in Guangdong province,the field plot experiments were conducted in 2020-2021.The results showed the control effects of MbNPV 2×10^(9)PIB/mL SC 50 g/666.7 m^(2),Si NPV 1×10^(9)PIB/mL SC 225 g/666.7 m^(2)and BA 1×10;spores/g OD 150 g/666.7 m^(2)were80.91%-84.74%at 7 days after treatment.At the same time,the control efficacy of Mb NPV 2×10^(9)PIB/m L SC 60 g/666.7 m^(2)were up to 90.42%in 2020 and 91.78%in 2021,which were equivalent to chlorantraniliprole 200 g/L SC 15 g/666.7 m^(2).It is recommended that Mb NPV 2×10^(9)PIB/mL SC 50-60 g/666.7 m^(2),SiNPV 1×10^(9)PIB/mL SC 225 g/666.7 m^(2)and BA1×10;spores/g OD 150 g/666.7 m^(2)can be used to control S.frugiperda at low population density,but three microbial pesticides should be used together with quick-acting insecticides at high population density.

关 键 词：甘蓝夜蛾核型多角体病毒 斜纹夜蛾核型多角体病毒 球孢白僵菌 草地贪夜蛾 防效 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治] TQ450[农业科学—植物保护]