PROBLEM TO BE SOLVED: To improve a heat transfer rate to a cultivation container in controlling a root zone temperature using a temperature control floor.SOLUTION: A cultivation container-holding tray 1 has: a heat insulation panel 2 having a through hole 2a capable of holding the bottom of a pot X in an exposed state and a metal foil 3 formed from the bottom 2d of the heat insulation panel 2 to a contact surface 2b that comes into contact with a peripheral surface X2 of the pot X of the through hole 2a.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】温調床部を用いて根域温度の調整を行うに当たり、栽培容器への熱伝達率を向上させる。【解決手段】栽培容器保持トレイ1であって、鉢Xの底部を露出状態で保持可能である貫通孔2aを有する断熱パネル2と、断熱パネル2の底面2dから貫通孔2aの鉢Xの周面X2と当接する当接面2bに至って形成される金属箔3とを有する。【選択図】図1
