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orchid soft rot
病微:夏、秋季高温多湿,通风不良,又施用氮肥过量时,较易发生此病。嘉德丽雅兰、蝴蝶兰、万代兰及东亚兰常见患此病,最初由细菌侵入叶片或心叶产生水浸状病斑,迅速扩大含水多,用手轻压即破裂,后期发生恶臭,病叶变黄而落叶,全株软化腐兰而死。此病传染极迅速,必须尽快防治,防止蔓延其他植物。