《植物病虫害绿色防控技术》课件——五、玉米螟绿色防控（双语版）.pptx

;玉米螟俗称玉米钻心虫，属鳞翅目螟蛾科。国内分布的玉米螟有亚洲玉米螟和欧洲玉米螟，以亚洲玉米螟为优势种，国内大部分省区均有发生。

Cornborer,commonlyknownasmaizeborer,belongstothefamilyBoreridaeofLepidoptera.ThecornborerdistributedinChinaincludesAsiancornborerandEuropeancornborer,withAsiancornborerasthedominantspecies,whichoccursinmostprovincesandregionsinChina.;五玉米螟绿色防控

GreenPreventionandControlofCornBorer;（一）形态识别Morphologicalrecognition

1、成虫Imago雄蛾黄褐色，前翅内横线暗褐色、波状；外横线暗褐色、锯齿状；内、外横线间有2个褐色斑，外横线与外缘线之间有1褐色带；后翅灰黄色，中央和近外缘处各有1褐色带。雌蛾翅颜色比雄蛾淡。

Themalemothisyellowish-brown,andtheinnertransverselineoftheforewingisdarkbrownandundulating;theoutertransverselineisdarkbrownandserrated;therearetwobrownspotsbetweentheinnerandoutertransverselines,andthereisabrownbandbetweentheoutertransverselineandtheouteredgeline;thehindwingisgrayish-yellow,andthereisabrownbandinthecenterandneartheouteredge.Femaleshavelighterwingsthanmales.;2、卵Egg

呈椭圆形，稍扁，长约1mm。一般20～60粒产在一起，构成不规则的鱼鳞状卵块。

Theeggisoval,slightlyflat,andabout1mmlong.Generally,20–60eggsarelaidtogethertoformirregularfish-scaleeggmasses.

;3、幼虫Larva

初孵幼虫长约1.5mm，头黑色，体乳白色。老龄幼虫体长20～30mm，背线明显，暗褐色。中、后胸各有4个圆形毛瘤，腹部1～8节每节各有毛瘤6个，前排4个较大，后排2个较小。

Thenewlyhatchedlarvaisabout1.5mmlong,withablackheadandamilkywhitebody.Theoldlarvaeare20~30mmlong,withobviousbacklinesanddarkbrownbody.Therearefourroundhairtumorsinthemiddleandlowerthorax,sixineachofthefirsttoeightsegmentsoftheabdomen,fourlargeronesinthefrontrow,andtwosmalleronesinthebackrow.;4、蛹Pupa

体长15～20mm，黄褐色，纺锤形，体背密布细小波状横皱纹。腹部末端臀棘黑褐色，顶端有5～8根钩刺，并有丝缠连。

Thebodylengthis15~20mm,yellowish-brown,spindle-shaped,andthebackofthebodyisdenselycoveredwithfinewavytransversewrinkles.Thebuttockspinesattheendoftheabdomenaredarkbrown,with5~8hookspinesatthetop,whichareen