可在若虫孵化期喷洒40%速蚧克乳油1500倍液,或48%毒死蜱乳油1200倍液等杀灭若虫。


主要以若虫、雌成虫聚集于小枝叶片、嫩梢、枝干等部位刺吸汁液,常造成树势衰弱,生长不良,而且,其分泌的大量蜜露会诱发严重的煤污病,小枝呈黑色,失去观赏价值。可在若虫孵化期喷洒40%速蚧克乳油1500倍液,或48%毒死蜱乳油1200倍液等杀灭若虫。
科学修剪 紫薇萌芽力强,极耐修剪,且花芽形成速度快,因此,花谢后及时剪除残花可促进植株多次抽生新梢,多次开花。早春修剪强度可稍大,疏除过密枝、重叠枝、徒长枝、内膛的病虫枝、枯死枝。重剪主侧枝、延长枝,压缩老枝,可使春季萌发分枝多,开花早。春季新梢生长至10厘米至15厘米时,保留8厘米至10厘米长摘心,使营养集中供应,以促进分枝,增加花枝量。第一次花谢后剪去花枝上部,留壮芽,使下部腋芽萌发,再生新梢孕蕾。30天左右可陆续第二次开花。花谢后及时剪除残花,积累营养,促进新枝花芽分化,约30天左右又可第三次开花。这样反复轮流修剪,并在每次开花前及时补充磷钾肥,可促进植株多次开花,且每次开花间隔时间缩短。可达到多次开花的目的。
常州碧丽在绿化养护管理上,了解种植类型和各种品种的特征与特性,在园林绿化时,规划设计高标准,施工养护高水平,实现景观四季常绿!

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