大姜烂脖子病,又叫腐霉根腐病,真菌性病害,主要侵染的是大姜根茎和上半部姜块部分。一般发病时间在6、7两个月份,表现为叶尖、叶缘黄化,茎秆基部溢缩,呈水浸状倒伏,维管束褐变,近地面的根茎腐烂,散发臭味。一旦发病,防治有难度,因为好多药液虽能到达根茎,但不能到达姜块。因此要想从根本上解决此 Ginger rotten neck disease, also known as Pythium root rot, fungal diseases, the main infection is ginger rhizome and upper part of the ginger part. The common onset time was 6 months and 7 months, showing leaf tip, yellow margin of leaf margin, base overflow of stem, water-soaked lodging, brown tube of vascular bundle, decay of rhizome near ground and odor distribution. Once the disease, prevention is difficult, because a lot of liquid can reach the rhizome, but can not reach ginger. So to fundamentally solve this