炭疽病是我省西瓜生产上最严重的一种病害,除在生长季节发生外,在贮藏运输过程中也发病。炭疽病是由半知菌类侵害而引起发病。病菌在土壤中的病残体上或在种子上越冬。种子代菌可直接侵入子叶。高温多湿是发病的主要环境,而湿度又是发病的主要因素。研究证咧、空气湿度在87—95%时,发病快,发病重。湿度低于54%的干燥少雨天气,一般不发病,这就是我省西瓜炭疽病 Anthracnose is one of the most serious diseases in watermelon production in our province, except during the growing season, and also occurs during storage and transportation. Anthracnose is caused by the half-know fungus attacks. Germs in the soil of the sick or overwintering on the seeds. Seed germ can directly invade the cotyledons. High temperature and humidity are the main pathogenesis, and humidity is the main factor in the incidence. Research card blanket, air humidity at 87-95%, the onset of fast, severe onset. Humidity less than 54% of the dry and rainy weather, generally not disease, which is my province watermelon anthracnose