推荐回答(5个)
花草的叶子黄了的情况是多种的,每一种都有不同的解决方法;
1、过多光照
表现:光照强烈,会使叶子灼伤焦黄,叶缘和叶尖部位会发黄干枯,直接光照部分会有黄斑。
解决方法:剪去灼伤发黄干枯的叶片,放到阴凉处养殖,慢慢等恢复。
2、光照过少
表现:长期没光照,叶片发黄疲软,然后脱落。
解决方法:放到光照充足的地方养殖,避免高温烈日,慢慢等植物恢复。
3、缺乏水分
表现:植物缺乏水分老叶就会先发黄,然后从上往下开始发黄,从叶片边缘开始发枯发黄。
解决方法:及时补充水分浇水,此时避免高温蒸发,等待植株恢复状态。
4、浇水过量
表现:浇太多水,嫩叶和叶尖开始发黄,整体的嫩叶会表现处颜色较浅不油绿,新梢也会萎缩。
解决方法:放置通风、光照充足的地方,让水分蒸发掉。
5、缺铁
表现:植株缺铁少表现为叶肉呈黄色,并逐渐形成网络,对幼叶影响较明显。
解决方法:可用硫酸亚铁兑水稀释来浇花。
6、缺磷肥
表现:植株缺少磷肥,开始从老叶发黄,然后是新叶跟着发黄,整体缺少光泽,呈现出暗绿色或紫红色。
解决方法:可使用动物的骨灰、骨炭沤肥,补充植物的磷肥。
7、缺钙肥
表现:植株钙的表现为幼叶卷曲,发黄。
解决方法:用鸡蛋皮沤制肥料,兑水稀释浇花。
8、缺氮肥
表现:植株缺氮肥的整体会呈现浅绿色,老叶开始发黄,新叶跟着由上至下的发黄。
解决方法:用腐熟的豆渣肥,补充植物氮肥。
9、土壤偏碱
表现:植株的土壤偏碱会表现为老叶和叶脉中间开始变黄。
解决方法:可用硫酸亚铁溶液或发酵好淘米水浇花,或者换盆换土。
10、缺钾肥
表现:植株缺钾肥的表现为老叶会变黄,叶片的叶缘和叶尖从下而上变黄焦枯,叶片表面会不平整。
解决方法:花盆底部加草木灰或者直接施用化肥氯化钾。
参考资料来源:百度百科-花草
从缺水性黄叶、以及通风不良两方面入手,教你适当浇水补水,及时修剪疏枝,加强通风,避免月季发生黄叶现象。
1、水黄
新梢顶心萎缩,嫩叶淡黄,老叶也渐渐暗黄。原因是积水久湿,土壤缺氧,部分须根腐烂。应及时通风松土,控制浇水并停止施肥。
2、肥多黄
新叶肥厚有光泽,但叶面凹凸不平,不舒展,老叶渐黄而脱落,这是由于施肥过量造成的,应立即停止施肥,适当多浇水,淋出部分肥料,或向盆内撒些萝卜或小白菜种子,出苗几天后拔去,以消耗盆内多余的肥料。
3、旱黄
顶心和新叶片正常,植株下部和内膛叶片首先干黄脱落或枯焦。原因是长期没有浇透水导致盆花脱水。应适量浇水,保持盆土上下湿润,遵循浇水浇透的原则,不可烧成“拦腰水
新买的花草容易黄叶,这是正常的,怎样避免叶子发黄,很简单,剪一剪,就不容易黄了。
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