In order to investigate the biological characteristics and evaluate the antagonistic activity of the strain YL3, the biochemical characteristics, 16 S r DNA and gyr B sequences were used to identify the species. The antagonistic activity of strain YL3 in vitro and control effect on strawberry fusarium wilt in field were investigated in this study. The selective medium and crystal violet staining method were used to detect the extracellular enzymes and biofilm formation of the strain YL3. The lipopeptide com...