美人蕉的虫害和防治方法

植物图片 2021-03-28 08:07

美人蕉不仅能美化人的生活，还能吸收有害物质，所以被人们称为监视有害气体污染环境的活的检测器。但它也极易遭到虫害的侵袭，下面就给大家介绍一下美人蕉的虫害和防治方法。

美人蕉的虫害：卷叶虫

症状

夏秋季幼虫吐丝缀叶成卷叶或叠叶，幼虫隐藏其中咀食叶肉，残留叶脉和上表皮，形成透明的灰褐色薄膜，后破裂成孔，称“开天窗”。

美人蕉虽然适应性很强，但是每年的5—8月要注意卷叶虫对美人蕉的侵害，以免伤到嫩叶和花序。

防治方法

秋、冬季及时捕杀落叶、裂缝或建筑物附近的越冬幼虫，夏季及时捕杀初孵幼虫，必要时摘除受害叶。

可以用50%敌敌畏800倍液或50%杀暝松乳油1000倍液喷洒防治。

美人蕉的虫害：蕉苞虫

症状

蕉苞虫的成虫会将虫卵产在美人蕉的叶片、嫩茎和叶柄上，等到幼虫孵化，然后爬到叶缘处咬食叶片，并且蕉苞虫还会吐丝将叶片粘成卷苞状，早上和晚上爬上卷苞外，咬食附近的叶片。

被蕉苞虫侵蚀严重的植株会出现大量的叶苞，以及残缺不全的叶片，严重影响了美人蕉的生长和观赏效果。

防治方法

在发现被蕉苞虫侵蚀的叶片时，要及时摘除叶苞，并且杀死幼虫。

在幼虫孵化还没有形成叶苞前，用90%的敌百虫1000倍液杀死幼虫，或用抑太保1000倍液于晨间或傍晚喷杀。

美人蕉的虫害：地老虎

症状

地老虎，多食性害虫。主要以幼虫危害美人蕉，幼虫将幼苗近地面的茎部咬断，导致植株整棵死亡。

防治方法

在发现地老虎危害美人蕉植株的时候，可以进行人工捕捉，或者用敌百虫600—800倍液对根部土壤灌注防治。

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