太阳花黄叶的原因和处理办法

植物图片 2021-02-21 15:35

盆中积水：一旦浇水过多会在盆中出现积水，叶子会发黄，先将水排出，必要时需更换新土。施肥太多：一旦施肥过量或施加生肥，根部腐烂也会引起黄叶，施肥太多需浇水冲淡肥力。自然代谢：可能是正常的代谢，继续养护即可。感染病虫害：夏季可能遭受病虫害，叶子上有黄斑，需做好通风，积极的防治。

一、盆中积水

原因：太阳花对水分有一定的需求，但耐不住水湿的环境，一旦浇水过多，超过了根部的需求量，就会在花盆中出现积水，导致盆土潮湿根部烂掉，叶子也会从而发黄。

措施：先将盆土中的水分想办法排出来，不能使根部处在缺氧状态中，如果出现了烂根需要剪掉，必要时需要更换新土。

二、施肥太多

原因：它能耐贫瘠，施肥不需要太多，一旦施肥过量，或是施加了生肥，根系无法承受导致腐烂，运输的功能也会受到影响。

措施：生长期只需酌情施肥，一旦施肥太多了，可以适量的浇水冲淡肥力，使剩余的肥料顺着花盆排出来。

三、自然代谢

原因：生长是一个过程，出现黄叶可能是正常的代谢，导致自然发黄。

措施：这种情况可以不用管，只需继续养护就可以，不会对植株造成影响。

四、感染病虫害

原因：夏季容易遭受病虫害的侵袭，也会导致叶子上出现黄斑。

措施：要是养在室内需做好通风，还要积极防治病虫害。

专题： 太阳花
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