Herbicide combinations with a content of components (A) and (B) have synergistic herbicidal effects:(A) one or more herbicides of the formula (I) or their salts, where R1, R2, R3, X, Y and Z are as defined in claim 1, and(B) one or more herbicides selected from amongst the specific herbicides of the following groups of compounds:(B1) herbicides which act selectively in some dicotyledonous crops against monocotyledonous and dicotyledonous harmful plants,(B2) herbicides which act selectively in some dicotyledonous crops, predominantly against dicotyledonous harmful plants, and(B3) herbicides which act selectively in some dicotyledonous crops, predominantly against monocotyledonous harmful plants.