杜鹃花开花后叶片为何突然发黄脱落

植物图片 2019-10-08 09:57

杜鹃花开花后叶子突然发黄而脱落，不论是春鹃或夏鹃都不是正常现象。其原因主要有：第一，环境气温过高，通风不足；第二，植株严重脱水；第三，施人了未经过发酵的“生肥”，或使用了过浓的片粒肥料。

杜鹃花开花期摆在室内欣赏时，应该注意室内通风和空气流通，并略给以光照。盆土干了要浇水，暂停施肥，夜间最好放到室外。待花快谢或未全部谢时，放置在室外半阴处，并转入日常性养护管理。采取这样的方式，花后的杜鹃花，通常是不会出现枯黄而死去的。

杜鹃花开花

反之，在开花期如果久放室内观赏，室内环境闷热，又不通风，或者光照较差。待花谢尽后，如恰逢天气转暖遇到太阳的暴晒，这样就容易死去。即使不死，生长也不良。

春节期间购入的杜鹃花，花落后正好是干燥、多风的春节，这时如浇水不当很易造成植株脱水，叶子干枯。解决的办法是用大茶缸盛水由盆花中心对准主干倒入，每日一次，以保证主根水分充分。杜鹃花是须根植物，一年生长后会使须根布满盆面、盆壁，以至用喷壶浇水浇不透。

由第三个原因引起的救治办法可对症进行处理：用浸水“灌肠”法，去除盆土内的肥料。

专题： 杜鹃花
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