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火鹤的叶子发黄怎么办
更新时间: 2020-08-17 00:00:00  

火鹤的叶子发黄解决办法:

环境预防:加强温室的温度,细菌理想的繁殖条件是30度左右、卫生环境和生产区人员、作业工具的流动等。肥料预防:在植株生长中尽量不用高NH4态的氮肥。去处或隔离病株。叶枯线虫病由滑刃线虫属线虫侵染所致,主要侵染根部和叶部。病状为沿叶脉形成坏死斑或棕色斑点,根部膨大,最后整片叶干枯。防治方法主要是加强苗检疫,选用健壮种苗,做好栽培基质的消毒。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。

关键词: 叶子 发黄 怎么办

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