PROBLEM TO BE SOLVED: To provide a heating device for plant cultivation which is capable of efficiently equalizing the soil bed temperature by conducting heat generated in a heating part effectively into a soil bed when heating a cultivation region of plants with a heating element, and for which energy saving, such as keeping a maintenance cost as low as possible, is taken in consideration, and a cultivation container including the heating device.SOLUTION: A heating device comprises: a plate-shaped heating part 2 with a built-in heating element installed underground and heat transfer parts 4 which are connected to the heating part, formed in a rod-shape, and arranged in a cultivation region in a distributed or developed manner, in which the heat transfer parts are provided outward in a protruded manner from a flat surface of the heating part and have a length such that the heat transfer parts do not protrude from a soil surface.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】植物の栽培域を発熱体により加温するさいに、発熱部で発生した熱を効果的に土床内に伝達することで、土床温度効率的に均一化することができ、また、維持コストを抑えるなど省エネルギーを考慮した植物栽培用加温装置、及び、その加温装置を備える栽培容器を提供する。【解決手段】加温装置は、土中に設置される発熱体を内蔵するプレート状の発熱部2と、発熱部に接続して栽培域内に分散または展開して配置する棒状等に形成する伝熱部4とを備えており、該伝熱部は、発熱部の平面から外方に向け、土表面から突出しない長さで突設される。【選択図】図1