The invention relates to new heterocyclically disubstituted sulphonylamino(thio)carbonyl compounds of the formula (I) ##STR1## in which Q represents oxygen or sulphur, R.sup.1 and R.sup.2 are identical or different and independently of one another represent a radical from the series comprising heterocyclyl, heterocyclylamino and heterocyclylimino, in each case optionally substituted and bonded via N, with the exception of optionally substituted pyrazolylamino in the meaning of R.sup.1, and salts of the compounds of the formula (I), furthermore to processes for their preparation, and to their use as herbicides.