PROBLEM TO BE SOLVED: To provide a plant cultivation greenhouse that effectively collects solar heat into the greenhouse to ensure temperature rise in the greenhouse and is capable of raising farm products through the entire year without using a large amount of fossil fuel.SOLUTION: There is provided a plant cultivation greenhouse for cold regions in which inclination of a roof slope is made steep, a roof has rectangular cross section in a longitudinal direction over the entire roof, and sidewalls are made perpendicular. A roof part in the longitudinal direction of the plant cultivation greenhouse and a sidewall part are covered by a double transparent and/or a translucent frame forming film, an air suction duct that sucks high-temperature air is provided for an upper part of a ceiling of the roof having rectangular cross section in a longitudinal direction, high-temperature air taken into the air suction duct is sent to a heat exchange coil of a heat storage water storage tank, air in the greenhouse is stirred by the air after heat exchange, warmed-up water in the heat storage water storage tank is supplied to a heating pipeline that is laid in the ground of a cultivation ridge in the plant cultivation greenhouse, and the cultivation ridge in the greenhouse is heated.【課題】植物栽培ハウスにおいて、太陽熱をハウス内に有効的に集熱してハウス内の温度上昇を確保し、多量の化石燃料を使わず、通年に亘って農作物等の植物栽培が可能な植物栽培ハウスを提供する。【解決手段】屋根斜面の傾斜を急勾配にし、全体が長手方向に断面三角の屋根を有し側壁を垂直にした寒冷地用の植物栽培ハウスであって、該植物栽培ハウスの長手方向の屋根部分と側壁部分とを二重の透明及び／又は半透明の枠形成フィルムで覆い、前記断面三角の屋根の天井上部には長手方向に高温空気を吸い込む空気吸入ダクトを設け、この空気吸入ダクトに取り込まれた高温空気を蓄熱貯水槽の熱交換コイルに送り、熱交換の終わった空気でハウス内の空気を攪拌し、暖まった蓄熱貯水槽の水を植物栽培ハウス内の栽培畝の地中に配管した暖房配管に供給してハウス内の栽培畝を暖房する寒冷地用の植物栽培ハウスである。【選択図】図３
