桂花树不长新芽的原因及解决方法

植物图片 2019-08-24 08:40

在养护桂花树的时候，可能会出现植株不萌生新芽的现象，严重影响桂花树的生长。桂花树为什么不长新芽呢?大多是由于养护不当造成的，主要有水肥不当、光照不足及其病虫侵害等问题，适度的改善防治，就能让桂花树恢复并萌生新芽。

一、桂花树不长新芽的原因及解决方法

1、浇水过多

桂花树怕水涝，在浇水的时候一定不能过量，盆土一旦积水就很容易造成桂花树的根系腐烂掉，从而造成叶子发黄，植株不发新枝芽的情况。

【解决方法】：浇水过多就要及时的排水，将盆土中过多的水分排出。可以将植株连根带土的从盆土中取出，然后摆在阴凉通风的地方晾干，之后浇水的时候遵循“见干见湿”的原则。

2、缺少氮肥

至于桂花树为什么不长新芽，很可能是由于氮肥不够的原因，如果桂花树生长期间缺少氮肥的话，植株的长势就会变得缓慢，也没有足够的养分去萌发新芽。尤其是盆栽的桂花树，盆土的养分是有限的，如果长期不施肥，就会出现这种现象。

【解决方法】：在桂花树生长期间，最好每隔半个月给它施加一次稀薄的氮肥，这样桂花树就有足够的养分去萌生新芽了。一定要注意施肥不可过量，避免造成肥害烧根。

3、光照不足

桂花树的生长需要充分的光照，室内养殖的桂花树可能会由于光线不足而出现生长缓慢的状况，不仅会造成枝叶徒长，还会让植株长不出新芽。

【解决方法】：桂花树不能长期荫蔽，室内养殖的时候，最好将其摆在阳台或者房间内向阳的地方。只有足够的光照才能让桂花树的叶子充分的进行光合作用，累积更多的养分，促进新芽的萌生。

4、虫害入侵

如果养护环境通风比较差，桂花树是比较容易滋生介壳虫的，介壳虫会吸食植株幼嫩部位的枝叶，造成桂花树萌生的新芽无法整成的生长。

【解决方法】：在发现虫害后，如果数量少可以用清水冲洗虫害，也可以用柔软的刷子将虫害刷下，如果数量太多，就喷洒氧化乐果溶液进行防治。

二、养护桂花树需注意的事项

1、定期换盆

盆栽的桂花树最好每隔2～3年就换一次盆土，由于盆土的养分和空间都是有限的，在换盆的时候，可以在花盆底部铺上一层碎瓦砾或者木炭，增加盆土的排水透气性。换土的时候，可以在土壤中加入一些鸡粪肥当作底肥，促进植株生长。

2、适时修剪

给桂花树修剪通常是在秋后进行，将过密、过长及其病弱枝剪掉，还可以依据植株的形态适度的进行整形修剪。这样能够节约养分，增加植株的通风透光性，也更具有观赏价值。

3、养护过冬

在冬天的时候，最好将桂花树移到室内养护，气温保持在0～5℃为宜，冬天气温干燥，可以经常往桂花树的叶子上喷水保湿。还要适度的进行补光，将桂花树摆在室内向阳的地方过冬。

4、改善土质

栽培桂花树时，土壤除了要肥沃疏松，有良好的排水透气性之外，PH值还要偏微酸性。由于偏碱的土壤不适合桂花树的生长开花，在浇水的时候，可以在水中加入适量的硫酸亚铁或食醋，能逐渐的降低土壤的PH值。

看完上面的内容，相信大家应该知道桂花树不长新芽的原因和解决方法了，尤其要把控好水肥这两个要点，水肥施加的好，生长开花没烦恼。

专题： 桂花树 桂花
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