Agricultural machine of the rotary mechanical sowing type enabling strips of plastic film to be laid on the ground and the ground to be sown through these strips, the machine being characterised by a running carriage which can be deformed about four axles, any two of which are perpendicular, comprising coulters for opening the furrows, earth-spreading coulters, film tension wheels mounted on oblique columns inclined towards the rear, tamping wheels - all members mounted elastically on the machine frame -, sowing wheels, the seed being fed to their bottom parts, and a lift-up hydromechanical film-cutting assembly which is automatically operated at the end of the field.
