The present invention relates to novel triazole derivatives of formula (I), wherein Q and Y both represent heteroaryl moieties as defined in the specification, to processes for preparing these compounds, to compositions comprising these compounds, and to the use thereof as biologically active compounds, especially for control of harmful microorganisms in crop protection and in the protection of materials and as plant growth regulators.本發明係關於新穎之式(I)三唑衍生物, 其中Q及Y二者皆代表如說明書所定義之雜芳基部分,製備這些化合物之方法,包含這些化合物之組成物,及其作為生物活性化合物之用途,特別是用於作物保護及材料保護上防治有害微生物以及作為植物生長調節劑。