棉花黄萎病是土壤传染的病害,种子及棉秸等植株残体也能带菌传病。病菌一经随同种子或棉秸进入棉田,能在土壤中存活约八、九年之久,而且很难消除。世界各国的经验证明,选育抗病品种是经济而有效的防治途径。我国现有良种都具有不同感病程度,因此,选育较高的抗病良种至为迫切。 Verticillium wilt is a disease of soil infection, plant residues such as seeds and cotton stalk can also carry the disease. Once the germs enter the cotton field with the seeds or cotton stalks, they can survive in the soil for about eight or nine years and are hard to eliminate. The experience of all countries in the world proves that selecting and breeding disease-resistant varieties is an economical and effective way of prevention and control. The existing varieties in our country all have different degrees of susceptibility, therefore, the breeding of higher resistant varieties is imperative.