A Brief Analysis on Impact Factors of Cotton Fusarium Wilt Occurring

It was suggested that cotton fusarium wilt( Fusarium oxysporum f. sp. Vasinfectum ) pathogenetic degrade were mainly affected by climate,soil and cultivate measures with observation and system investigation for many years. The optimum soil temperature triggering cotton fusarium wilt was about 25 ℃,and when soil temperature was over 30 ℃,pathogenetic symptom of cotton fusarium wilt would not easily be observed. Cotton fusarium wilt pathogenetic grades would become higher in conditions of optimum soil temperature and more well-distributed rain. Cotton fusarium wilt differed in pathogenetic degrade in different cotton growth stages,and it generally broke out in budding period. Cultivars resistant to fusarium wilt,advisable cultivate measures and reasonable soil structure would alleviate cotton fusarium wilt.