The present invention relates to a combined soil-working and sowing machine (1) in which the seed drill (5) is intended to rest, during transport, on the central part (34) of the chassis (6) of the machine for preparing the seed-bed (4) with the aid of at least one central limit stop (59). The combined machine (1) according to the invention is characterised in that, in transport, the seed drill (5) rests from above partially on the said chassis (6) by means of at least two lateral limit stops (61) respectively situated on either side of and beyond the central limit stop or stops (59), preferably at least substantially in the vicinity of each longitudinal end of the said chassis (6). <IMAGE>
