点尺蛾生物学特性观察及药剂防治试验  

Bionomics and chemical control of Naxa angustaria

作　　者：邱宁宏[1] 詹宗文 隆祖燕[1] 

机构地区：[1]遵义职业技术学院,贵州遵义563006 [2]遵义市红花岗区园林管理处,贵州遵义563000

出　　处：《中国森林病虫》2015年第3期23-26,共4页Forest Pest and Disease

基　　金：贵州省科教青年英才培养工程项目"遵义市主城区园林植物病虫害种类调查与防治"[黔省专合字(2012)148];遵义市"15851人才精英工程"资助项目

摘　　要：野外观察点尺蛾Naxa angustaria Leech的发生规律和生物学特性,进行4种药剂防治试验。结果表明:点尺蛾在贵州遵义1 a发生2代,以3,4龄幼虫群集在桂花Osmanthus fragrans叶背越冬。1 a有2个危害高峰即4月中旬—5月上旬和7月中旬—8月下旬。2.5%高效氯氟氰菊酯水乳剂1500倍液,70%吡虫啉水分散粒剂4000倍液,5.7%甲维盐水分散粒剂4000倍液防治点尺蛾幼虫,药后7 d的防治效果分别为100%,88.18%,86.07%。Occurrence regularity and bionomics of Naxa angustaria w ere observed and experiment of 4chemical pestcides against N. angustaria w as carried out outdoors. The results show ed that N. angustaria had 2 generations a year in Zunyi,Guizhou and overw intered as the 3rd,4th instar larvae on the leaf back of Osmanthus fragrans. Tw o peaks of damage occurred from mid April to early M ay and from mid July to late August in a year. The control effects of λ-cyhalothrin 2. 5% EW at the concentration of1500 times,imidacloprid 70% WG at the concentration of 4000 times and emamectin benzoate 5. 7%WG at the concentration of 4000 times against N. angustaria larvae w ere 100%,88. 18%,86. 07% respectively 7 d after the application.

关 键 词：桂花 点尺蛾 生物学特性 药剂防治 

分 类 号：S763.42[农业科学—森林保护学]