据研究表明，随着棉花移栽时苗龄的增加，枯萎病的发病率、病指均极显著地减小，且壮苗的发病率、病指都低于弱苗。棉花枯萎病的发病期、发病高峰期与移栽时间关系不大。因此，棉花采取大苗壮苗适当迟栽，既能推迟枯萎病的发病期，又能有效地降低发病率，减轻发病程度。 According to the research, with the increase of seedling age when cotton transplanting, the incidence of Fusarium wilt, the disease index decreased extremely significantly, and the incidence of strong seedling and disease index were lower than the weak seedlings. The incidence of cotton blight, the peak incidence of transplanting time has little to do. Therefore, cotton seedling Miao appropriate age appropriate late planted, not only postponed the incidence of blight, but also effectively reduce the incidence and reduce the incidence.