▎ 摘　　要

NOVELTY - The method involves using a film (1) made of polyethylene terephthalate (PET) or other polymer, of rectangular shape, consisting of a first layer of PET (2A) or other polymer covered with a layer of superconductive ink (6A, 6B, 7A, 7B), in silver nanotubes or graphene, covered with a layer of carbon ink. The heating film powered by an electrical supply unit near a fruit tree is arranged. The element of measuring climatic parameters is arranged in the vicinity of the fruit tree to be heated or cooled. The threshold temperature below which the film heats up and/or a ceiling temperature above which the film cools down are defined. The ambient temperature is measured using element for measuring climatic parameters. The process is made for triggering either a film heating setpoint each time when the measured temperature falls below threshold or a film cooling setpoint each time when the measured temperature falls above ceiling. The heating film is arranged to cover layer of aluminum. USE - Method for diffusing infrared radiation to diffuse heat and/or cold for fruit tree such as vine, apricot tree, almond tree, apple tree, pear tree, and cherry tree (all claimed) in greenhouse. ADVANTAGE - The method provides a heating solution that is very quick to implement, more efficient and produces no carbon emissions and meets electrical safety requirements. The use of the film offers high energy performance and non-negligible economic advantages. DESCRIPTION OF DRAWING(S) - The drawings show the schematic view of the vine plants comprising a heating device and sectional view of the film. Film (1) PET layer (2A) Superconductive ink layer (6A, 6B, 7A, 7B) Electrical power supply unit (20) Agricultural weather station (21)