我国魔芋主要分布在秦巴山区,过去为房前屋后半野生零星种植。20世纪80年代中期以来,魔芋栽培由零星种植发展到好田好地集中连片规模经营。由于种植方式的改变,适宜魔芋生长发育的田间环境小气候相应发生变化,导致以魔芋软腐病和白绢病为主的魔芋病害发生并逐年加重,严重影响着魔芋生产的发展 My konjac is mainly distributed in the Qinling-Bashan Mountains, the former semi-wild sporadic planting in front of the house. Since the mid-1980s, the cultivation of konjac flourished from scattered planting to well fielding and concentrating large-scale contiguous operations. Due to the change of planting methods, the microclimate suitable for the growth and development of konjac has correspondingly changed, resulting in the occurrence of konjac diseases mainly including konjac soft rot and sclerotinia and increasing year by year, seriously affecting the development of konjac production