墨兰烂根怎么办

植物图片 2021-02-27 09:21

墨兰烂根是因为浇水太多，盆土中出现积水，土壤太粘性较重就会导致根部不能吸收水分，或是受到真菌感染。发生烂根后要及时将腐烂的部位剪掉，同时将带有斑点、发黄的病叶摘除，及时喷洒杀菌药剂，重新进行栽种。

烂根原因

浇水过多

烂根的主要原因是浇水过多，兰株没有及时吸收水分，盆土长时间潮湿甚至积水。土壤长期不透气，根部得不到足够的养分而发生腐烂。

土壤的通透性差

土壤的通透性差与浇水时链接在一起的，若土壤中的粘性较重，土壤容易板结，水分长时间停留在土壤表面，根部很难吸收到水分。

真菌感染

墨兰烂根一般是由真菌、线虫、细菌引起的植物病害，烂根是土传病害，主要通过土壤内水分、地下昆虫和线虫传播。

烂根怎么办

切除腐烂部分

当发现墨兰烂根，将魔狼从盆中取出，根据根部的腐烂程度，将发霉、发黑、中空的根茎剪掉，保留未腐烂的部分。同时将带有斑点、发黄的病叶剪掉。只要鳞茎为完全烂掉就可以成活。

换土

用老红砖敲成山核桃那么大，配树皮，比例为1:1.若只用土的话，也加碎红砖吧，大碎粒放下面，小的和土放上面。不过为使植株不再被传染病菌，重栽时要换一个干净的素瓦盆，也可选用无污染的素沙栽种。

喷洒药剂

植株烂根一定存在某种病菌，所以药品及时喷洒杀菌药剂，选用多菌灵灌根，2~3次。

控制水肥

在之后的养护中，要控制好水肥。浇水见干见湿，盆底有水流出就停止，盆面变干甚至发白及时浇水。重新上盆的兰株，在=恢复生长之前不要施肥。

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