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花黄叶子补救小妙招

Miss Chen
09-07
首先要控制浇水,每周浇1-2次水,保持盆土微润即可。其次是改变土质,可以在盆土中掺入适量的硫磺或是松针,还可经常浇灌淘米水,以免土壤缺铁黄叶。还需要补充养分,每月施加1-2次有机肥,染上病害的植株先剪除病叶,同时喷洒除菌杀虫的药剂并加强通风。

1、 控制浇水
花卉叶子发黄可能是因为浇水不当,根系呼吸不畅就可能导致叶片变黄,最后脱落。浇水过多则要倾倒多余的水分,将花盆摆放在通风处,加速水分蒸发。浇水过少则要及时补充水分,每周浇1-2次水,保持盆土微润即可。



2、 改变土质

如果养殖的是酸性花卉,比如说杜鹃、山茶、含笑、栀子花、兰花、白兰、桂花等,而盆土偏碱性,缺乏可溶性铁等元素,叶片就会逐渐变黄。可以在盆土中掺入适量的硫磺或是松针,也可以经常浇灌发酵好的淘米水。

3、 补充养分

如果土壤中养分含量不足,植株生长不良叶片可能发黄,针对这种情况需要及时补充养分,每月施加1-2次有机肥,注意施肥浓度不可过高,以免产生肥害。若是盆土使用过久,土壤板结则要及时翻盆换土。

4、 防治病害

花卉染上叶斑病,叶片上会出现黄色斑点或斑块,严重时可能导致叶片脱落。遭受蚧壳虫、红蜘蛛等虫害时也可能导致叶片枯黄,甚至脱落,此时需要剪除已经染病的枝叶,同时喷洒除菌杀虫的药剂,还要加强通风。
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