西瓜枯萎病又叫蔓割病、萎蔫病，在黑龙江省发生较重，目前一般发病率为10％左右，严重染病地块发病率高达60％以上，给西瓜生产造成严重威胁。1识别和诊断　　枯萎病在西瓜整个生育期都能发生，但以抽蔓期到结果期发生最重。苗期受害，幼茎基部产生淡褐色水渍状小斑点，以后逐 Watermelon Fusarium wilt, also known as spore, wilt disease, occurred in Heilongjiang Province, heavier, the current general incidence of about 10%, the incidence of severely affected plots as high as 60%, causing serious threat to watermelon production. 1 Identification and diagnosis Fusarium wilt in the whole growth period of watermelon can occur, but the pumping period to the fruition of the heaviest occurrence. Seedling damage, young stem base produces light brown water-like small spots, after by