白掌叶子发黑怎么办？白掌叶子发黑的解决方法

植物图片 2019-12-15 16:05

如果平时对白掌养护不当，很容易就出现叶子发黑的情况。白掌叶子发黑怎么办呢?首先我们要找到原因，这种情况通常是浇水、施肥及其光照不当造成的，然后就是对症下药，一段时间后白掌就会恢复正常的。

一、白掌叶子发黑的解决方法

1、浇水过多

浇水过多让盆土积水是造成白掌叶子发黑的主要因素，室内养殖的白掌通常通风会比较差，土壤水分蒸发的速度回比较慢，如果不控制水量，频繁浇水很容易就会造成积水。

【解决方法】：盆内有积水的话，可以先将植株拿出盆外，将水分排出，并摆在阴凉通风的地方晾干。如果积水严重，可以更换新土。

2、施肥过量

如果营养不良，会造成白掌生长欠佳，可如果营养过剩肥料堆积，则会造成烧根烂根，让白掌的叶子发黄变黑，最终枯萎死亡。

【解决方法】：如果施肥过量，此时应该浇水稀释土壤中的肥力。如果情况非常严重，建议直接更换盆土。在平时施肥是要注意薄肥勤施，不可一次施肥过多。

3、光照过度

白掌喜欢阴湿的环境，对光照是非常敏感的，如果长期受到阳光的直射可能会造成叶子灼伤发黑，严重的甚至会造成植株死亡。

【解决方法】：在接受了过度的强光直射后，应该将白掌移到阴凉通风的地方养护，除了浇水之外，还需要给叶子喷洒水雾，以保持湿度。知道了白掌叶子发黑怎么办，也不能忘了白掌的养护技巧。

二、白掌日常养护的技巧

1、浇水适量

在春秋天节每隔3～5天给白掌浇一次水;在夏天高温的季节1～2天就需要浇一次水，平时需要往叶子上喷洒水雾以保持空气湿度;在冬天的时候要减少水量与频率，半个月浇一次水就行，保持土壤微微湿润。具体的浇水频率还需要依据实际情况来看，要保持土壤湿润，但不可积水。

2、控制气温

最适合白掌生长的气温是在20～21℃左右，如果气温超过24℃低于5℃，就会影响白掌的生长了。冬天来临之前就需要将白掌移到室内，如果长期处于低温状态，会让白掌的的叶子焦黄并脱落。

3、换盆修剪

白掌生长的比较迅速，可以每隔一年就换一个大一些的花盆，在换盆的同时可以将一些老病根枯根修剪掉，再换上比较疏松透气的盆土即可。如果出现过密的枝条可以进行适度的疏剪，有助于植株的生长。

4、病虫防治

在白掌的生长旺季，是非常容易遭受虫害侵扰的，一旦发现虫害，就应该立即的将其灭杀防治。常见的虫害为蚜虫等，可以喷洒氧化乐果、蚜虱净等药剂进行灭杀。

看完上面的内容，相信大家应该知道如何处理白掌叶子发黑的情况了，找到原因对症下药，希望大家的白掌能够早日恢复健康。

专题： 白掌
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