紫薇在栽培中受紫薇长斑蚜的危害最重,其排谢物还诱发煤污病,常造成紫薇叶色变淡、卷曲、残缺,重的焦枯脱落;枝条瘦弱,扭曲;花序小,花蕾稀;降低了观赏效果;危害严重的植株,甚至整株死亡。根据紫微长斑蚜发生规律,做好综合防治,促进紫微健壮生长发育,保持最佳的观赏性。一、长斑蚜紫薇长斑蚜,又称紫薇棘斑蚜,是专一危害紫薇的蚜虫,没有发现在其它植物上侵害发生,在紫微上普遍发生,是危害紫薇叶片最严重的害虫,其分泌物还诱发紫薇煤污病。 Crape myrtle cultivated by the crape myrtle aphids the hardest hit, its Xie Xiewu also induced coal pollution, often resulting in crape myrtle leaf fades, curly, incomplete, heavy scorch off; thin branches, twisted; inflorescence small, bud Dilute; reduce the ornamental effect; endangered plants, even the whole plant died. According to the occurrence of purple aphid aphid law, do a good job of comprehensive prevention and treatment to promote the vigorous growth and development Ziwei maintain the best ornamental. First, the long-aphid Ziwei Wei long-eared aphid, also known as Ziwei spotted aphid, is a specific aphthous crape myrtle, did not find the occurrence of violations on other plants, the occurrence of purple micro-universal, is the most harmful pest Zaoxi leaves, The secretions also induced crape myrtle coal pollution.