豇豆荚螟在北京地区红小豆田为害消长规律及药剂防治  

Population dynamics of Maruca vitrata on adzuki bean in Beijing and chemical control

作　　者：丁凯[1] 郝少东[1] 王进忠[1] 濮绍京[1] 雷广军[1] 郭力 张鹏飞[1] 石小玉[1] 张志勇[1] 

机构地区：[1]农业应用新技术北京市重点实验室/北京农学院植物科学技术学院,北京102206

出　　处：《北京农学院学报》2014年第4期16-21,共6页Journal of Beijing University of Agriculture

基　　金：现代农业产业技术体系专项资金资助(CARS-09);北京市高校人才强教计划项目(PHR-IHLB2011-35);北京市教委科技创新平台项目(PXM2008-014207-055164);国家自然科学基金资助项目(30971938;31272099)

摘　　要：采用田间普查、定点调查和灯光诱集的方法明确了北京地区豇豆荚螟Marucavitrata发生特点及其在红小豆田的种群消长规律,采用田间药效试验筛选出防治该虫的有效药剂.结果表明,豇豆螟幼虫共有5个龄期,低龄幼虫喜食红小豆细嫩的花蕊,造成落花、落蕾.幼虫钻入豆荚时取食红小豆种子,有转荚为害习性.成虫对黑光灯和高压汞灯趋性不明显.北京地区豇豆荚螟发生为害开始于红小豆的始花期,集中在红小豆盛花期,豆花、豆荚上的幼虫数量在8月末达到高峰.田间药效筛选试验结果表明,当红小豆田中的豇豆荚螟幼虫数在防治指标（百花/荚虫数5～6头）以上时,稀释1000倍液的5％氯虫苯甲酰胺防治红小豆田豇豆荚螟幼虫效果明显优于常规药剂高氯甲维盐和阿维菌素,而且持效期在20d以上,具有明显的保花护荚作用.Population dynamics and damage of Maruca vitrata on adzuki bean in Beijing were studied by the method of field investigation and light trapping.In addition,the efficiency insecticide was screened out based on the field control effects of three insecticides on M.vitrata.The results indicated that legume pod borer larva had a total of 5 instars.During which,the young larvae fed on tender flower and resulted in the falling of flowers and buds,whereas the old larvae bored into the pod and transferred from one pod to another to feed on bean seeds.Adults showed weak phototaxis to black light lamp and high pressure mercury lamp.In Beijing,larvae of M.vitrata started from the flowering of adzuki beanand reached a peak at the end of August till the beginning of September.The efficiency test showed that 5％ Chlorantraniliprole when diluted 1000 x worked better than Beta-cypermethrin＋Emamectin Benzoate or Avermectin,and thus could protect adzuki beans from being damaged by M.vitrata over 20 days when the larval population density was over five or six per hundred flowers or pods.

关 键 词：豇豆荚螟 红小豆 发生消长动态 药剂防治 

分 类 号：S431.12[农业科学—农业昆虫与害虫防治]