韭菜病虫害有哪些 韭菜病虫害有哪些症状

综合百科2022-12-20 17:06:21佚名

韭菜病虫害主要有韭蛆、灰霉病、疫病等。对于韭蛆,每亩可用2%甲基阿维菌素乳油500毫升稀释成1000倍液进行灌根;对于灰霉病,可增施有机肥,适当收割,雨后要及时排水,减少田间湿度,药剂可用78%科博600倍液;对于疫病,可喷施50%灰核威1000倍液或40%菌核净2000倍液防治。

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