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富贵竹有斑点怎么办
更新时间： 2020-09-27 00:00:00  

富贵竹叶斑病症状：

病斑初期为褐色斑点，边缘黄色；扩展后病斑近圆形，中央灰色，边缘黑褐色，周围黄色；在潮湿条件下病斑上出现黑色粒状物。防治方法：

防止植株过密，保持通风透光;发病初期用42％克菌净粉剂3000倍液，或88％水合霉素1000倍液，或25％络氨铜800倍液，每隔5～7天喷1次，连喷2～3次。

关键词： 富贵竹 斑点 怎么办

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