夏日 发表于 2019-7-1 05:38:31

这李子树叶咋回事呀？求老师指点{

这李子树叶咋回事呀？求老师指点https://app.guoyetong.com/public/emotion/face_076.png
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果农张三 发表于 2020-6-24 14:05:31

这个是李子细菌性穿孔病，这种病害在连续阴雨天或受蚜虫等昆虫危害严重时发生较重，北方地区一般在5月发病，夏季高温高湿期是发病高峰期。建议现在用苯醚甲环唑+多抗霉素进行喷打，加强水肥管理，施肥要注意营养平衡，特别注意磷钾肥的施用。
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