FIELD: agriculture.
SUBSTANCE: invention relates to agriculture, in particular to devices for heat-air melioration of subsoil layer of fields by year-round heating by means of solar radiation, and is intended for field crop cultivation and truck farming. Two pipelines are installed in soil on the principle of exhaust ventilation system, one of which is sealed and watertight, and the other one - with air-permeable walls. Pipelines have an inclination relative to horizontal plane or their middle is above ends, and tight water-tight pipeline 1 is located below pipeline 2 with air-permeable walls, and on ends of pipelines there are chambers 6 and 10 of air heating. Ends of pipelines from which heated air is discharged are connected together. At short-term high standing of ground water, the tight water-proof pipeline can be located inside the pipeline with air-permeable walls.
EFFECT: such implementation will allow to accumulate heat in soil under soil, reducing adverse weather effects on crop capacity.
4 cl, 4 dwg, 2 ex
