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水培富贵竹主干茎上长了好多白斑
更新时间: 2020-09-18 00:00:00  

这是由于富贵竹白粉病的原因,白斑为白粉虱。

可以自制杀虫剂来解决,方法如下:

1、肥皂液:取肥皂和热开水按1比50的溶解后喷施,因肥皂可堵塞害虫的呼吸器官至其死亡,对白粉虱、蚜虫、蚧壳虫有效;

2、花椒液:花椒50克,加水500克左右在锅内加热煮沸,熬成250克的药液,使用时加水6至7倍喷洒,防治白粉虱、蚜虫和蚧壳虫;

3、用食醋或者米醋50毫升,将小棉球放入醋中浸湿后,用湿棉球在受害的花木茎叶上轻轻揩擦即可。此法方便安全,既能达到除虫目的,又可使被害的叶片重新返绿发亮;

4、用酒精轻轻地反复擦拭病株即可。此法简便安全,效果良好。

关键词: 富贵竹 主干 好多 白斑

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