橡皮树落叶子怎么回事

植物图片 2021-06-07 10:51

橡皮树掉叶子的原因有很多种：若是长时间未换盆造成土壤板结导致的，就及时换盆并将变黄的叶子摘掉。若是长时间未浇水施肥导致的，就在换盆时加入底肥，及时补水。若是浇水或施肥过多导致的，就注意控制浇水施肥。

橡皮树发黄、掉叶子原因一

长时间未换盆造成土壤板结

橡皮树通常每年需换盆一次，盆景要一年比一年大一点，生长6~8年之后可三年换一次盆。若长时间未换盆，会使土壤板结，土壤的通气状况不好，会导致橡皮树须根窒息坏死，不能吸收水分和营养，导致叶片掉落。

解决方法

春季气温达到15℃以上，及时换盆。剪取枯死的根系，抖落掉大部分的宿土。将变黄的叶子摘掉，短截茎秆，换上肥沃的土壤。

换盆之后，保持盆土湿润，可15~20天松一次土，以免反复浇水导致盆土板结而致使烂根或根系萎缩。

橡皮树发黄、掉叶子原因二

长时间未浇水施肥

橡皮树喜欢大肥大水，长时间不施肥浇水会造成营养不良，导致叶片发黄、落叶。

解决方法

换盆时加入底肥，及时摘掉黄叶，每半月施肥一次，以磷钾肥为主。

养护期间经常观察盆土的湿润程度，及时补水，每天早晚向叶面喷水。注意水温与土温基本持平，以免悬殊过大，造成植株生长不良。

橡皮树发黄、掉叶子原因三

浇水或施肥过多

橡皮树虽喜水喜肥，但若浇水施肥过多，尤其是在8月~9月期间，天气比较闷热，浇水过多，盆内易积水；或者越冬时浇水过多，植株处于休眠期，蒸腾作用较弱，盆内水分无法及时排出。再或者误施生肥、大肥、浓肥，都会造成植株水害、肥害。

解决办法

将腐烂的根系剪掉，见口处会流出白色的乳汁。然后用草木灰将乳汁收干，减少水分蒸发，待剪口晾干后重新栽种。重新栽种后，注意控制浇水施肥，可早晚向叶面喷水。

橡皮树发黄、掉叶子原因四

通风不当

室内长时间不同风，环境闷热，聚集了大量的有害气体，纵使橡皮树有净化空气的作用，也难以面对这种局面。

解决办法

及时开窗通风，保持室内空气清新。冬季是可在气温较高的中午时分开窗更换室内空气。

橡皮树发黄、掉叶子原因五

感染灰霉病

养护环境不适宜，橡皮树容易遭受灰霉病的侵扰，需要及时防治。

解决办法

发现病叶及时摘除销毁，及时清扫凋落的叶片。适当增加室内光线，提高室温。

发现病叶，及时喷洒百菌清可湿性粉剂600倍溶液，7~10太能喷一次，连续2~3次，可有效控制病菌蔓延。

专题： 橡皮树
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