随着农村产业结构的不断调整,魔芋已成为我国中西部山区的一种主要经济作物。魔芋在适宜地方开始种植时,往往头几年发展势头较好,但随着种植年限的延长,栽培面积的扩大,病害流行越来越严重,导致最后种植面积锐减。如湖北五峰县原种植面积2万亩以上,在病害的肆虐下,现实际仅剩下 With the continuous adjustment of rural industrial structure, konjac has become a major economic crop in the central and western mountainous areas. When konjac began to grow in suitable places, the momentum of its development in the first few years was generally good. However, with the extension of the planting period, the expansion of cultivation area and the worsening of disease epidemic led to the sharp reduction of the final planted area. For example, the original planted area of ​​Wufeng County in Hubei is more than 20,000 mu. Under the rampant disease, there are actually only