The invention relates to a heat welding system comprising a dispenser for dispensing covers and at least one structure (1) including coupling means (4) for coupling same to a towing vehicles. The structure (1) comprises a heat welding device (3) for bonding the overlapped longitudinal edges of adjacent covers, and comprising coupling means (4) for coupling the heat welding device (3) to the structure (1). The invention also relates to the use of the heat welding system, comprising the steps of: (i) deploying the means for preparing the earth, which are disposed on the sides of a structure coupled to a towing vehicle； (ii) starting the vehicle in one direction and initiating the system； (iii) retracting the means used in step (i) on one side and deploying a heat welding device (3) on the same side； (iv) actuating the system in the direction opposite that employed in step (ii)； (v) repeating steps (iii) and (iv), alternating the use of the means and the devices on both sides as many times as necessary.
