滇西南菜区小菜蛾发生规律及抗药性现状  

Occurrence and insecticide resistance of Plutella xylostella in the areas of southwestern Yunnan

作　　者：尹艳琼[1] 杨明文 彭桂清 赵雪晴[1] 李向永[1] 黄玲 习有强 李晨 许晓敏 谌爱东[1] Yunnan YIN Yanqiong;YANG Mingwen;PENG Guiqing;ZHAO Xueqing;LI Xiangyong;HUANG Ling;XI Youqiang;LI Chen;XU Xiaomin;CHEN Aidong(Institute of Agricultural Environment and Resources,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;Lincang Agricultural Technology Extension Station,Yannan Province,Lincang 677000,China;Linxiang District Agricultural Technology Extension Station,Lincang City,Yunnan Province,Lincang 677000,China)

机构地区：[1]云南省农业科学院农业环境资源研究所,昆明650205 [2]云南省临沧市农业技术推广站,临沧677000 [3]云南省临沧市临翔区农业技术推广站,临沧677000

出　　处：《植物保护》2019年第6期288-291,310,共5页Plant Protection

基　　金：国家公益性行业(农业)科研专项(200803001,201103021);国家重点研发计划(2018YFD0201200)

摘　　要：为掌握滇西南菜区小菜蛾的发生规律和抗药性现状,2013-2017年进行了田间系统调查幼虫、性信息素诱集成虫和室内毒力测定。结果表明:滇西南菜区小菜蛾田间种群每年早春存在种群激增现象,3-5月份出现春季高峰期,6月后种群数量保持较低水平。抗性测定表明,该地区小菜蛾对丁醚脲、Bt、氯虫苯甲酰胺、虫螨腈、茚虫威均为低水平抗性,对氟啶脲和多杀霉素为中等水平抗性;对阿维菌素为中到高抗,对高效氯氰菊酯为高抗水平。建议该区域1-5月放置性信息素诱杀成虫,3-4月用丁醚脲、Bt制剂、氯虫苯甲酰胺、虫螨腈、茚虫威等进行化学防治,6-12月小菜蛾的发生虫量在经济阈值下,可不防治。In order to understand the population dynamics and the insecticide resistance of the main pest, Plutella xylostella, in southwestern Yunnan, the field systemic investigation for larvae, sex pheromone trap for adults and indoor toxicity test was conducted during 2013-2017. The results showed that there was an early spring population explosion of P.xylostella, and the spring seasonal peak was from March to May, but the population kept at relatively low level after June. The resistance ratios of P.xylostella was at a low level to diafenthiuron, Bt, chlorantraniliprole, chlorfenapyr and indoxacarb, at a moderate level to chlorfluazuron, spinosad, and at a high level to beta-cypermethrin in these vegetable-planting areas. Therefore, it is recommended that sex pheromone traps should be placed from January to May to trap adults, and the chemical control should be carried out in March and April using diafenthiuron, Bt, chlorantraniliprole, chlorfenapyr, indoxacarb, etc. There is no need to prevent and control P.xylostella from June to December when its population was below the economic threshold.

关 键 词：小菜蛾 种群消长 抗药性 滇西南 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治] S463.3[农业科学—植物保护]