FIELD: growing of plants in greenhouses. SUBSTANCE: temperature control device has polyethylene pipe 1, two adjustable stops 5,6 secured to pipe end and adapted to engage with projection 10 of drum 9, which is connected by flexible cord through system of pulleys 17,18 with load. Greenhouse 14 is provided with ventilation members. EFFECT: increased efficiency by reduced time for equalizing temperature of polyethylene pipe and air temperature in greenhouse. 4 cl, 5 dwg
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