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植物上長白色絮狀物是什么原因 植物上長白色絮狀物原因是什么

  • 農業
  • 2023-04-19 18:35
這些白色絮狀物是吹綿蚧殼蟲,吹綿蚧殼蟲是一種靠吸食植物的汁液生活的害蟲,在春夏季節它們會繁殖的很快,幼蟲在花葉上就會分泌成白色的絮狀物,終生寄居在枝葉或果實上。如果沒有及時將有害蟲的花朵去除,會影響花卉吸收光照的程度,造成葉片發黃、樹勢衰退、枝梢枯萎。

  吹綿蚧殼蟲是同翅目Hemiptera的一種害蟲,別名吹綿蚧,學名為Iceryapurchasi。世界性分布,常見于多種植物(金合歡、柳、橘)上,對枸椽科植物為害甚烈,一度對南加利福尼亞的柑橘業造成威脅,后引進澳大利亞的瓢蟲,短期內即控制害蟲。

  吹綿蚧殼蟲常群集在葉牙、嫩芽、新梢上危害,發生嚴重時,葉色發黃,造成落葉和枝梢枯萎,以致整枝、整株死去,即使尚存部分枝條,亦因其排泄物引起煤污病而一片灰黑,嚴重影響觀賞價值。

  吹綿蚧殼蟲為害黃楊、柑橘、薔薇、月季、海桐、牡丹、冬青、石榴、無花果、木瓜、梅花、含笑等多種觀賞植物。

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