Anti-pathogen effect of extracts from exopleura of Ginkgo Bbiloba L.on common pathogens of tomatoes was studied in laboratory and in pot experiments.Results showed that the extracts all had the anti-growth effect on 4 kinds of common pathogens of tomatoes.But the inhibiting effects showed obvious difference,among of which,the extracts had the best inhibiting effects on Fulvia fulva Cif.and Pseutomoas solanacearum,following Alternaria solani Jones et Grout,and the extracts had less intibiting effect on Botry...