棉花枯萎病菌是一种寄生兼腐生的病原真菌,这种真菌可以寄生于植物体内,也能以土中植物残体作为其能量和营养来源在土壤中繁殖并长期营腐生生活,并由耕作、流水等途径逐渐扩散,以致病害逐年加重,造成减产或甚至失收。因此,除了加强植物检疫,不使带菌棉籽、棉残体等进入无病棉区外,及早发现和消灭初发零星棉枯病点土壤中的病原菌,对控制棉枯 Fusarium oxysporum is a parasitic and saprophytic pathogenic fungi, which can be parasitic in plants, but also can plant residues in soil as its source of energy and nutrients in the soil to breed and long-term camp saprophytic life by farming, Water and other means of gradual proliferation, resulting in increased disease year by year, resulting in reduced production or even lost. Therefore, in addition to strengthening the phytosanitary measures, not to carry contaminated cottonseed, cotton remnants into the disease-free cotton area outside the early detection and elimination of pathogen in the soil of the sporadic cotton,