The high Kill bacterium effect Group that the cultivated crop that this Hair Ming Department Ti Gong mono- Seed Right whats have infected plant disease has Steady fixed are at object.This Hair Ming Department are by with (a) formula (I):(in formula, R As C1-6Alkyl or C1-6Alkoxy, the whole Number of n As 1 ~ 5) shown in imidazole compound make As effective components Zhi Shao mono- Seed, With (b) Bao Li Mildew plain (polyoxins) and be used in mixed way Xiang More what Single Independence and use each compound Qing Condition, the Farming Garden Arts of more Gifted more be can provide with Kill bacterium Elixirs Group at object, to prevent and kill off plant disease.本發明係提供一種對於感染了植物病害之栽培作物具有穩定之高殺菌效果的組成物。本發明係藉由以(a)式(I):(式中,R為C1-6烷基或C1-6烷氧基,n為1~5之整數)所示之咪唑系化合物之至少一種、與(b)保粒黴素(polyoxins)作為有效成分而混合使用,相較於單獨使用各化合物的情況,可提供更加優越之農園藝用殺菌劑組成物,以防除植物病害。