姬星美人病虫害及防治方法

植物图片 2021-03-30 10:08

姬星美人的株型矮小，叶色诱人，或许是因为植株矮小，肉友们往往会忽视叶片上的小问题，以致于越来越严重。下面小编为大家介绍一下姬星美人的病虫害及防治方法！

姬星美人叶斑病

症状

叶斑病是真菌性病害，全年均可发生，5~10月暖湿季节，发病更为严重。发病时叶片上出现黄褐色病斑，逐渐扩大会造成整个植株萎蔫。

姬星美人发病时，叶片上会出现很细小的斑点，后期会蔓延开来。在养护中要仔细观察。

防治方法

及时清理枯枝残叶，及时摘除病叶，加强养护，在潮湿的环境下注意及时通风。

发病初期用70%甲基托布津800－1000倍液喷施，发病期间用50%多菌灵或75%百菌清800－1000倍液交替喷施，时隔7天连喷3－4次。

姬星美人锈病

症状

锈病主要危害姬星美人的茎、叶，使之出现锈色的斑点，但初期往往出现在基部的茎处，很难发现。4~5月份之后降雨增多，可能会诱发锈病。

防治方法

及时清除病株，摘除病叶。在每年春季换盆的时候，进行筛选，将枯叶、病叶剔除。

发病前定期用80%代森锌500－700倍液喷施；发病期间用15%粉锈宁800－1000倍液或25%粉锈宁1200－1500倍液喷施，时隔7－10天连喷3－4次。

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