[分享] 桅子花缺铁状

云之男

南方花卉栽培管理不当容易产生缺铁症!

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云之男

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云之男

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云之男

<img src="attachments/dvbbs/2005-8/200581110153589462.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-8/200581110153589462.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

桅子花缺铁的症状是叶肉变黄而叶脉仍为绿色, 又因铁在植物体内容易流动,所以症状主要发生在新叶上,老叶上症状不明显.

八重樱

家里刚迁插了两株桅子，是水培出根后移栽的，不知道有没有这个问题。

小乖

楼主是故意做实验的吗?有人说插根铁钉在盆里就好了,是不是啊?

ahshmj

[B]以下是引用[I]小乖[/I]在2005-8-11 17:03:00的发言：[/B][BR]楼主是故意做实验的吗?有人说插根铁钉在盆里就好了,是不是啊?

    关键是培养土的酸度，如果是中性以上，铁盐会形成植物不易吸收的状态，再多的铁也没有用。如果铁太多了也会影响其他元素的吸收，严重时造成铁中毒。所以如果土壤或水pH之太高的话，最好是用硫酸调整（水培就是这样。其他酸比如硝酸、有机酸也可以。盐酸含氯所以应慎用），仅仅用硫酸亚铁调整酸度也不是很好。
     当然最好是使用鳌合剂（乙二铵四乙酸二钠），使铁变成有机态，受酸度的影响较小一些。
以上这些当然也适用于其他大部分金属盐类。

御花园

我的栀子是定期用硫酸亚铁喷叶面，同时灌根，现在长的很好

云之男

当然是施用鳌合态的铁是最好不过的了,施用硫酸亚铁的方法效果不是很好的,不易被吸收呀 !

八重樱

我经过观察发现我家的两株新上盆的桅子有缺铁现象，叶很软，色变淡，脉络变清晰。