Abstract: Chemical product control and metering equipment for agricultural land disinfection machines with at least two receptacles for containing chemical products and an injector for injecting the products on agricultural land, comprising includes a product metering frame, a control panel of the metering frame, wirelessly connected thereto, and an electronic control card. The metering frame includes a chemical product inlet duct, an electrovalve, and a dose control flowmeter connected to the inlet ducts and to a hydraulic pump, which has at least one product outlet duct. The electronic control card is arranged inside the metering frame and is connected to a motor, the dose control flowmeter, and the electrovalves.

Abstract: The present invention relates to a heat welding system comprising a dispenser for dispensing coverings, at least one structure (1) with coupling means (4) for coupling to a traction vehicle, where said structure (1) comprises a heat welding device (3) for adhering the overlapped longitudinal edges of adjacent coverings to one another, and having coupling means (4) for coupling said heat welding device (3) to the structure (1). The present invention also relates to the use of said heat welding system which comprises the steps of: (i) deploying the means for preparing the terrain arranged on the sides of a structure linked to a traction vehicle; (ii) starting the vehicle in one direction and initiating the system; (iii) retracting the means of phase (i) from one side and deploying a heat welding device (3) on said side; (iv) actuating the system in the direction opposite that of phase (ii); (v) repeating phases (iii) and (iv) intercalating the means and devices of both sides as many times as necessary.