Antibacterial activity of air discharge on fusarium oxysporum M4 has been investigated. fusarium oxysporum M4 distributed on plates were exposed to ozone(3 500 mg/m3)、 NA I(6.6×106ions/cm3)、ozone +NAI(3 500 mg/m3+6.6×106ions/cm3), respectively, in an airtight chamber, and untreated as a blank comparison. Microscope was used to study the alteration in morphology of Fusarium oxysporum M4, the indexes of cytoderm and cytomembrane and the activity of cell wall-degrading enzymes were determined. Result showed th...