发财树叶子耷拉下来怎么办：找准病因对症下药

植物图片 2019-12-13 22:04

现在不少家庭乔迁新居，都喜欢在客厅内放一盆发财树，一方面吉利讨口彩。另一方面，发财树的树形非常优美，常年绿叶光亮，是一种非常好看的观叶植物。但有些花友会发现自己家的发财树无端端的叶子会耷拉下来无精打采的样子，看着都心疼。大家遇到这种情况该怎么办呢？淡定，淡定！小编这就为你排忧解难，跟着小编的脚步去看看这是什么原因造成的，才好对症下药啊！

叶子耷拉下来的发财树

造成叶子耷拉的原因及解决办法：

（1）长久缺肥。长期没有施氮肥或未换盆换水，水中氮素等营养元素缺乏，造成枝叶瘦弱，叶薄而黄。

解决办法：需及时换入新的培养水逐渐增施稀薄腐熟液肥或复合花肥。

（2）施肥过量。施肥过多就会出现新叶肥厚，且多凹凸不平，老叶干尖焦黄脱落。

解决办法：应立即停止施肥，增加换水量，使肥料流失掉，或立即倒盆，用水冲洗球根后再重新栽入盆内。

（3）炎热高温。若将花卉摆在高温处让强光直晒，极易引起幼叶叶尖和叶缘枯焦，或叶黄脱落。

解决办法：及时移至通风良好的阴凉处即可。

（4）蔽荫过度。若将花卉长期摆在蔽荫处或光线不足的地方，就会造成枝叶发黄。

解决办法：将植株移至有阳光出即可。（忌阳光直射，最好是散射光）

（5）水土偏碱。由于水中缺乏可被其吸收的可溶性铁等元素，叶子就会逐渐变黄。

解决办法：栽植时要采用酸性水土，生长期间经常浇矾肥水。

（6）密不通风。若施氮肥过多，枝叶长得进于茂盛，加上长期未修剪，致使内膛枝叶光线不足，容易引起叶子发黄脱落。

解决办法：应合理施肥并加强修剪，使之通风透光。

（7）空气干燥。室内空气过分干燥时，花卉往往会出现叶尖干枯或叶缘焦枯等现象。

解决办法：应注意采取喷水、套塑料薄膜罩等法增加空气湿度，

（8）气温不当。冬天室温过低，花卉受到寒害，因而造成叶子发黄，严重时枯黄而死。若室温过高，植株蒸腾作用过盛，根部水分养分供不应求，也会使叶子变黄。

解决办法：应请注意及时调整室温。

（9）病虫为害。受到真菌等病菌侵害引起的叶斑病，易使叶子局部坏死，出现黄色斑点或斑块，严重时整叶枯黄脱落，受到花叶病毒侵染后叶子上出现黄绿相嵌的斑驳；遭受介壳虫、红蜘蛛等为害。

解决办法：使用40％乐果或80％敌敌畏乳剂1：1000:或1：1500倍溶液喷洒植株。

（10）强性刺激。防治病虫害时使用农药浓度过大，或者受到大气中有毒气体污染，或者气温高时骤然浇灌冷水等，均易引起叶尖或叶面局部发黄焦枯，甚至全株枯死。

解决办法：因此应注意合理使用农药，设法排除空气污染源。盛夏避免在中午前后用冷水浇花。最后还应提到的是，盆花黄叶有时是一种原因引起的，但往往是由于多种因素造成的，应作出正确诊断，方能对症下药。

专题： 发财树
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