《植物病虫害绿色防控技术》课件——七、草地贪夜蛾绿色防控（双语版).pptx

;（一）发生与危害情况OccurrenceandHazard

草地贪夜蛾俗称秋粘虫行军虫等，隶属于鳞翅目夜蛾科害虫，是一种原产于美洲热带和亚热带地区的杂食性害虫，成虫可远距离迁飞。2016年起，草地贪夜蛾侵入至非洲、亚洲各国，并于2019年1月由缅甸侵入我国云南、广西，已在20个省（区、市）发现，为我国的农业生产造成极大的破坏力。

SpodopteraFrugiperda:commonlyknownasfallarmyworm,isapestoftheorderLepidopteraandthefamilyNoctuidae.ItisanomnivorouspestnativetothetropicalandsubtropicalregionsoftheAmericas,anditsimagoescanmigratelongdistances.Since2016,SpodopteraFrugiperdahasinvadedcountriesinAfricaandAsia.ItinvadedYunnanandGuangxiofChinafromMyanmarinJanuary2019.Ithasbeenfoundin20provinces(autonomousregionsandmunicipalities),causingsignificantdamagetoChinasagriculturalproduction.;草地贪夜蛾目前有水稻品系和玉米品系两种生态型，被草地贪夜蛾（玉米品系）为害的玉米，减产达20%~70%，甚至绝收。

Atpresent,therearetwoecologicaltypesoftheSpodopteraFrugiperda:ricestrainandcornstrain.TheyieldofcorndamagedbytheSpodopteraFrugiperda(cornstrain)isreducedby20%-70%,andevennoharvest.;幼虫为害的植株特征明显：1-3龄幼虫通常隐藏在心叶、叶鞘等部位取食，形成半透明薄膜“窗孔”；4-6龄幼虫取食叶片后形成不规则的长形孔洞，可将整株玉米的叶片取食光，也会钻蛀心叶、未抽出的雄穗及幼嫩雌穗，影响叶片和果穗的正常发育。

Thecharacteristicsoftheplantsdamagedbylarvaeareobvious:The1st-3rdinstarlarvaeusuallyhideinthecoreleaves,leafsheaths,andotherpartstofeed,formingtranslucentfilmwindowholes;The4th-6thinstarlarvaefeedontheleavesandformirregularelongatedholes,whichcanfeedontheleavesofthewholeplantofcorn,andalsoborethecoreleaves,unsproutedtassels,andunsproutedyoungfemaleears,affectingthenormaldevelopmentofleavesandfruitclusters.;幼虫为害未抽出的雄穗及幼嫩雌穗

UnsproutedTasselsandYoungFemaleEarsdamagedbytheLarvae;（二）形态识别MorphologicalRecognition

1、成虫Imago

体长15-20mm，翅展32-40mm，灰棕色。雄蛾前翅深棕色，顶角向内有一大白斑，翅中部有一黄褐色环状纹，其后为肾形纹，肾形纹内侧有一白色楔形纹。后翅灰白色，边缘有窄褐色带。雌蛾前翅灰褐色，斑纹不明显，环状纹和肾形纹褐色。后翅与雄蛾相似。

Thebodylengthis15mm-20mm,thewingspanis32mm-40mm,anditisgrayishbrown.Theforewingsofthemalearedarkbrown,