一分布及为害情况我国重要的棉病有二十多种,但其中最为普遍而严重的要首推炭疽病了,国内主要的植棉区域,无不有炭疽病的发生。根据调查;在山东、安徽、河南、湖南、四川、广西及江苏等地的改良棉种均受炭疽病的侵害,比较严重的几乎要达到100%。棉花炭疽病是真菌(註)寄生所致,本病非但为害幼苗;同时也是重要的铃期病害之一种。幼苗受害 A Distribution and Harmful Situation There are over 20 kinds of important cotton diseases in our country, but anthrax is the most common and serious one in our country. The major cotton planting areas in our country are all anthrax-free. According to the survey, improved cotton varieties in Shandong, Anhui, Henan, Hunan, Sichuan, Guangxi and Jiangsu provinces are all subject to anthracnose attack, with the worst being almost 100%. Cotton anthracnose is a fungus (Note) caused by parasites, the disease is not only harmful to seedlings; it is also one of the important ring disease. Seedlings suffer