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58问答库 > 请问老师，大葱这是什么病害？怎样防治？

请问老师，大葱这是什么病害？怎样防治？

谢谢俶付老师！好评

2025-02-09 13:31:53

推荐回答（1个）

回答（1）：

包老师好
大葱紫斑病初期症状
喷洒75%百菌清，或64%杀毒矾，40%大富丹，58%甲霜灵，锰锌可湿性粉剂500倍液，或50%扑海因可湿性粉剂15000倍液，隔7-10天喷1次，连续防治3-4次。
供参考
谢谢🙏

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