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西瓜枯萎病是一种严重危害西瓜生长的病害。调查和试验分析结果表明,在西瓜枯萎病菌的侵染循环中,种子不是主要病菌来源,西瓜种子发芽期受侵染率最高;西瓜座瓜后植株萎蔫死亡达到高峰;重茬地发病率高,轮作倒茬间隔时间越短,发病率越高;地势低洼及大水漫灌、串灌其发病率也高。试验示范结果表明,用嫁接和多菌灵播前药土+生长期灌药2次的方法防治西瓜枯萎病,其防效较佳,相对防效分别为95..7％、91.3％。
Watermelon wilt disease is a serious harm to watermelon growth disease. The results of investigation and experimental analysis showed that the seeds were not the main source of pathogens during the infection cycle of Fusarium oxysporum f. Sp., The highest infection rate was in the germinating stage of watermelon seeds, and the wilting death rate reached the peak in the watermelon seedlings. The incidence of stubble was high, The shorter the stubble interval, the higher the incidence; low lying and flood irrigation, string irrigation its incidence is also high. The experimental demonstration results showed that the prevention and control of watermelon blight by using the method of grafting and carbendazim sowing prodrug soil + growth period for two times was better, with the relative control effects being 95..7% and 91.3% respectively.