几种低毒杀虫剂对甜玉米斜纹夜蛾和毒蛾的防效评价  

Field trials of several pesticide of low poison against Spodoptera litura and Porthesia scintillans in sweet corn

作　　者：陈炳旭[1] 陆恒[1] 董易之[1] 郑锦荣[2] 

机构地区：[1]广东省农科院植物保护研究所,广东广州510640 [2]广东省农科院作物研究所,广东广州510640

出　　处：《广东农业科学》2010年第6期113-114,共2页Guangdong Agricultural Sciences

基　　金：广东省农业科技攻关项目(2009B020201006)

摘　　要：斜纹夜蛾和毒蛾是甜玉米种植中的重要害虫,其危害甜玉米的嫩叶和花丝,造成损失。目前对该两种害虫的防治都是以农药防治为主。选用一些较有代表性的药剂对斜纹夜蛾和双线盗毒蛾的幼虫进行田间药效试验。结果表明:2%甲维盐乳油、4.2%高氯·甲维盐水乳剂、15%虱螨脲水分散粒剂和20%虫螨腈可溶性粒剂对斜纹夜蛾的防效较好,药后7d的防治效果达90%以上;6%阿维·高氯乳油、2%甲维盐乳油和5%高效氯氰菊酯乳油对双线盗毒蛾的防治效果最高,药后7d的防效达到100%,2000IUB.t.颗粒剂对双线盗毒蛾幼虫防效缓慢,但药后7d却达到91.0%,田间持效期较长,可在虫口密度较低或发生初期使用。Spodoptera litura and Porthesia scintillans are important pests in sweet corn, which made damage in fresh leaves and silks. Pesticides are mainly used to control these two pests in corn field. Several pesticides were chosen to test for their control efficacy through field trial. The results showed that 2% emamectin benzoate EC, 4.2% beta-cypermethrin and emamectin benzoate EW, 15% lufenuron WDG and 20% chlorfenapyr SG had significant effect on S. litura, the control efficacy were all over 90% at 7th day after treatment. 6% beta-cypermethrin and avermectins EC and 2% emamectin benzoate EC had significant activity against P. scintillans, the control efficacy were 100% at 7th day after treatment. 2000 IU B.t. GR were slow-release but had a long term effect in the field with its control efficacy being 91% at 7th day after treatment, which was used in low density or early stage of pests occurrence.

关 键 词：甜玉米 斜纹夜蛾 双线盗毒蛾 药效试验 

分 类 号：S482.3[农业科学—农药学]