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大棚韭菜极易发生灰霉病。该病主要危害叶片,病叶密生灰色绒毛状霉层,后期病斑互相融合成大片,直至半叶或全叶腐烂,并伴有毒味,使品质、口味都受到影响,产量明显下降。防治该病可以从以下几个方面着手:
Greenhouses leek prone to gray mold. The disease endanger the leaves, diseased leaves gray hairy mold layer, the latter part of the lesion blends with each other into large, until the half leaf or whole leaf decay, accompanied by toxic taste, the quality, taste are affected, the output decreased significantly. Prevention and treatment of the disease can start from the following aspects: