西瓜栽培中最重要病害之一是枯萎病,从幼苗期至结果期均可发生,尤以重茬地发病率更为重要,一般减产20%～50%,重者绝收。为了解决这一难题,近年来大面积推广了西瓜嫁接栽培技术,取得了较好的效果。但在生产中仍有部分嫁接后的西瓜植株发生枯萎病害,发病率达10%以上。通过调查得 One of the most important diseases in watermelon cultivation is fusarium wilt, which can occur from the seedling stage to the fruiting stage, especially the incidence of stubble is more important. Generally, the yield is reduced by 20% to 50%. In order to solve this problem, in recent years, large-scale popularization of watermelon cultivation techniques, and achieved good results. However, in the production of some watermelon plants after grafting wilt disease, the incidence rate of 10% or more. Through investigation