金银花黄叶的原因和处理办法

植物图片 2021-01-29 14:00

如果是浇水过多造成的，需要停止浇水，调整浇水量，如果是盆栽的话，需及时转移至通风的地方，等待土壤变干。如果是施肥不足导致的，应当及时追肥，但要注意不能施加浓肥。如果是病害导致的，要果断采取措施，加强植株的水肥管理，增加抵抗力，同时对病害植株使用杀菌药喷洒治疗。

一、浇水过多

1.原因：浇水过多产生积水，根系长期泡在水中容易腐烂，根系受损，就会导致植株的叶片发黄脱落。

2.处理方法：应当立即停止浇水，将植株从浸水的土壤中取出，重新选择土质通透，排水性好的土壤中栽培。

二、施肥不足

1.原因：如果肥料不够、浓度过低或者两次施肥中间间隔过长，会导致嫩茎、幼叶先变黄，严重的可导致全株黄叶甚至死亡。

2.处理方法：应当及时合理的增加化肥，但是在补充肥料的时候要切记，不能一次性增加太多的肥，以免造成根部烧坏的后果。

三、病害原因

1.原因：金银花的主要病害为白粉病和叶斑病，前者会危害金银花叶片和嫩茎，引起植株纸条干枯、叶片发黄；后者会使叶片呈现小黄点，最后发黄掉落。

2.处理方法：要果断采取措施，加强植株的水肥管理，增加抵抗力，同时对病害植株进行冲洗，并使用杀菌药。

专题： 金银花
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