1,2,4-Triazine-3,5-dione-6-carboxamides of the general formula (I) are described as herbicides. In this formula (I), R1 and R2 are radicals such as hydrogen, organic radicals such as alkyl, and other radicals such as halogen. Q is a tetrazolyl, triazolyl or oxadiazolyl radical. Z and Y are each oxygen or sulfur.