尖孢镰刀菌是土壤中常见的一种镰刀菌,能寄生于多种植物,导致植株萎蔫,也能较长期地腐生于土中,其中的萎蔫专化型是棉花枯萎病的致病菌,在连续栽种感病棉花品种的情况下,该菌每年随病株残体进入土壤后土中菌量随之增多,因而病情逐年加重,即使 Fusarium oxysporum Fusarium is a common soil in the Fusarium, can be parasitic on a variety of plants, leading to plant wilting, but also more long-term rot in the soil, which is the wilting specialization is the pathogen of cotton Fusarium wilt, In the continuous planting of susceptible varieties of cotton, the bacteria each year with the diseased plant debris into the soil after the soil increased, so the condition increased year by year, even if