江苏省东台市位于苏北沿海,是全国无公害蔬菜示范县(市)之一。西瓜种植面积较大,近2a全市种植西瓜10000hm2以上,其中大棚设施栽培8000hm2。随着西瓜种植年限延长,西瓜上主要病害的发生为害逐年加重,尤其以菌核病发生最为严重,已成为大棚西瓜生产上的重要病害。一般田块病穴率20 Dongtai City, Jiangsu Province, is located on the coast of northern Jiangsu Province, and is one of the national pollution-free vegetable demonstration counties (cities). Watermelon planting area larger, nearly 2a city watermelon 10000hm2 above planting, of which greenhouse facilities cultivation 8000hm2. With the extension of watermelon years, the occurrence of major diseases on watermelon pests increased year by year, especially in the most serious occurrence of sclerotinia, has become an important disease in greenhouse production of watermelon. General field disease point rate 20