To provide a herbicidal composition having a broad herbicidal spectrum, having high activity and having a long-lasting effect, whereby the dose of the herbicidally active ingredients can be reduced. By combining a compound represented by the following formula (I) with another herbicidal compound, it is possible to provide a herbicidal composition having a broad herbicidal spectrum, having high activity and having a long-lasting effect. A herbicidal composition comprising a herbicidal compound represented by the formula (I) or its salt: wherein X, R1, R2, Q and n are as disclosed in the specification, and another herbicidal compound, and a method for controlling weeds or inhibiting their growth by means of the herbicidal composition.本發明之課題為提供一種具有範圍廣泛之殺草光譜,以高活性,減低除草有效成分之施用量,且持續效果長之除草組成物。用以解決課題之手段為可提供一種藉由組合後述式(I)所示之化合物與其他除草性化合物,具有範圍廣泛之殺草光譜,以高活性且持續效果長之除草組成物。一種含有式(I)所示之除草性化合物或其鹽、(式中,X、R1、R2、Q及n如說明書所記載)與其他除草性化合物之除草組成物,使用其之防除雜草或抑制其生育之方法。
