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火鹤怎么叶子开始变黄
更新时间: 2020-10-23 00:00:00  

火鹤叶子变黄的原因有:

1、浇水太勤,红掌喜湿润而不耐涝,浇水太勤会使根系呼吸困难,故叶片黄化;

2、光照不适,红掌要求半阴或散射光的环境,在阳光强烈或过于阴暗处皆不能正常生长,叶片黄化、枯萎;

3、施肥过多,红掌生长开花需要肥料,但过多的施肥会破坏基质中的EC值,红掌对此较敏感,容易出现不适症状;

4、基质太碱化,需要及时用600倍液的硫酸亚铁溶液浇灌栽培基质;

5、病虫害,如黄斑病、枯叶病,可用多菌灵可湿性粉剂800倍液进行全株喷施,虫害中有红蜘蛛、介壳虫,可用专杀剂进行防治,也可用抹布擦拭并且清水冲洗干净。

关键词: 怎么 叶子 开始

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