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绿萝叶子发黄长黑斑是怎么回事
更新时间: 2021-03-08 07:09:39  

1、绿萝叶子发黄长黑斑,可能是染上了叶斑病,叶子发黄,叶面上出现水渍状的褐色斑点,之后斑点变黑,可剪掉病叶,喷洒杀菌溶液。

2、也可能是通风不良、空气湿度较大,需加强通风,降低空气湿度。还可能是温度偏低,冷风吹袭,需移到温暖处,注意保暖。或可能是光照过强,夏季时避开直射光,遮挡住百分之六十的强光。

关键词: 叶子 发黄 黑斑 怎么 回事

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