三角梅不开花光长叶子是什么原因？详解五个原因及处理方法

植物图片 2019-08-29 10:09

三角梅是一种很好养的热带植物，很多家庭都有养殖。但是很多家庭都不知道他们的三角梅不开花光长叶子是什么原因，其实是由于光照时间不够，生长空间太小，浇水不适度，修建不及时，施肥不按要求。三角梅的繁殖方法分为扦插法、高压法、嫁接法，其中扦插法最好养活。

一、三角梅不开花光长叶子的五种原因

1、光照不足

很多人都不知道三角梅不开花光长叶子是什么原因，其实很简单三角梅源产地于巴西，热带农作物，是一种喜爱强光的一种植物。如果长期摆在荫蔽处，不仅不会开花，还会是叶子逐渐枯黄，出现落叶现象。应该把它放置在阳光底下，每天要有充分的光照时间，即使在夏天最高温的时候暴晒也没有关系。光照时间越长，那么它的花开的越大，越好看。

2、生长空间太小

三角梅生长发育很快，根部发达，需要依据它的生长情况来更换花盆的大小。像种植在开阔的土地上的三角梅，往往长的枝叶茂盛，花朵结的很大，很艳。由于它的根部没有任何限制，可以无限生长来汲取它生长所需要的养分。而通常家里种植的三角梅多种植在花盆里，这时候就要多注意三角梅的生长速度了，要及时的更换花盆。

3、浇水量控制不好

三角梅是一种怕涝的植物，但是它对水需求量又很大。在三角梅的开花期前，我们要适度浇水，不可过多;尤其在开花前一个月一定要对每天浇水量严格控制，绝不能浇水过多。由于三角梅生长快，花盆土壤排水不便，造成根系发育不良，之后影响开花。

4、不按时修剪

三角梅生长速度快，几个月的时间就会长的特别茂盛，这时候就需要及时的修建。如果对它置之不理，就会造成枝叶过于密集，造成养分的缺失，对花芽的发育影响很大，造成之后三角梅开不了花。我们要依据三角梅的长势及时的进行修剪，对过于密集的枝条进行剪理。

5、施肥不当

三角梅对肥料的使用异常敏感，如果施肥不当，就会使得三角梅出现枝叶茂盛，花朵很小，甚至不开花，因此在给三角梅上肥料的时候要特别注意。三角梅在夏天的时候要施加一点液肥，通常半个月左右上肥一次，如果家里有条件的话可以采用0.2%～0.3%的磷酸二氢钾溶液对枝叶进行施肥。在三角梅的生长初期，可以施加尿素，这样会提高花枝的生长速度。

二、三角梅的繁殖方法

1、扦插法

在对三角梅进行扦插繁殖的时候，要选好土壤，通常采用较为肥沃的沙质土壤，也可以加一点珍珠岩等矿物质。对于花盆的要求比较低。想要让三角梅成功繁殖就要选好扦插时候要用的枝条，最好选当时在枝条里最健康的一条。准备好后，把枝条埋入土中7厘米，带有叶子的一头露在泥头外面。扦插完后，要注意浇水量，然后在花盆上套一个保鲜膜防止水分蒸发，将花盆摆在弱光的地方。

2、高压法

这种方法三角梅宜于存活，在需要进行高压的枝条在母体的连接处上方大约两寸的地方，用小刀环绕割一个3毫米的小口。把纸条用土包裹起来，套上保鲜膜，并把两头系紧，以防止水分的流失。如果中间泥土变干，应及时补充水分。通常30天左右就能看到高压的枝条上长出许多根。这时候只要根部不受到损害，将健康的枝条剪下来进行栽种，很快就能长成新的三角梅。

3、嫁接法

三角梅嫁接一年四季都可以，但在5～7月上旬时间最好。嫁接时候的砧木最好选择生长健康的紫花三角木。三角梅的接穗挑选尤为严格，一要挑选健康无疾病的枝条;二从最好的部分选取。嫁接的时候通常采用劈接法。先把一株有一年生长的紫花三角梅采用多根枝条当作砧木。在砧木树干的光滑处用剪刀剪断，用刀削平口子。顺髓心纵切，口深长2厘米左右。

然后把不同花色的接穗，粗细和砧木相对应，长度控制在4厘米左右，把叶子拔掉，减少水分蒸发。在它的下面2厘米处各切一小口，削面要平。角度要和砧木切口角度一致。把砧木劈口撬开把接穗插入进去，接穗的伤口要露在外面大约5毫米。接好后，用塑料带系紧，外套一个塑料袋进行保湿，避免阳光的照射，通常两个星期就知道是否存活。

通过上文的介绍，相信大家已经知道三角梅不开花光长叶子的原因了，及其三角梅的三种繁殖方法，分别是扦插法、高压法、嫁接法。希望花友们都能养出开花的三角梅。

专题： 三角梅
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