A synergistic fungicidal mixture contains a fungicidally effective amount of a compound of Formula I, (3S,6S,7R,8R)-8-benzyl-3-(3-((isobutyryloxy)methoxy)-4-methoxypicoli namido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl isobutyrate, and at least one triazole fungicide wherein Formula I is 一種協同性殺真菌混合物,其包含殺真菌有效量之式I之化合物,(3S,6S,7R,8R)-8-苯甲基-3-(3-((異丁醯基氧基)甲氧基)-4-甲氧基甲吡啶醯胺基)-6-甲基-4,9-二氧-1,5-二氧雜環烷-7-基異丁酸酯((3S,6S,7R,8R)-8-benzyl-3-(3-((isobutyryloxy)methoxy)-4-methoxypicoli namido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl isobutyrate),以及至少一個三唑殺真菌劑,其中式I為