近年来,随着黄芪种植面积的扩大,连茬种植、乱购种苗等现象的普遍出现,黄芪枯萎病(Fusariumoxysporum)(俗称根腐病、麻口)在陇西县及周边地县大面积流行,为害严重。据2002年在陇西县9个乡(镇)定点定期挖根取样调查,平均病田率100%,病株率32.1%,病情指数18.1,严重影响黄芪的产量 In recent years, along with the expansion of the planting area of ​​Astragalus, the continuous emergence of the phenomenon of continous planting and the indiscriminate purchase of seedlings, the large-scale epidemic of Fusarium oxysporum (commonly known as root rot, Makou) is widespread in Longxi County and surrounding counties , Serious damage. According to the sampling survey conducted regularly in 9 townships (towns) in Longxi County in 2002, the average field rate was 100%, the diseased rate was 32.1% and the disease index was 18.1, which seriously affected the yield of Astragalus