武汉市郊历年植棉3.3万公顷,是湖北省高产棉区之一。80年代以来,棉花枯萎病蔓延很快。据1995年市植保站统计:全市病田1.5万公顷,其中重植棉近1.1万公顷。枯萎病对棉花生产威胁很大,轻病田虽还可种棉花,但减产五成左右,重病团则有种无收。 防治枯萎病有水旱轮作等多种措施。多年的实践证明:水旱轮作大面积推广受条件限制;土壤消毒、种子处理、药剂防治等不但效果差,而且花工多,成本高。只有推广高产优质抗病品种,才是最好办法。 In the suburbs of Wuhan, there are 33,000 hectares of cotton planted in the past years, one of the high-yielding cotton areas in Hubei Province. Since the 1980s, cotton blight spread rapidly. According to the 1995 Plant Protection Station statistics: the city’s 15,000 hectares of disease, of which nearly 11,000 hectares of cotton. Fusarium wilt pose a great threat to cotton production. Although it is possible to plant cotton even in light fields, the yield will be reduced by about 50% and the serious illnesses will be reduced. Fusarium wilt disease prevention and treatment of rotation and other measures. Years of practice have proved that: the large-scale promotion of irrigated rotations is limited by conditions; soil disinfection, seed treatment and medicament prevention and treatment are not only ineffective but also costly and costly. Only the promotion of high-yielding high-quality disease-resistant varieties, is the best way.