PROBLEM TO BE SOLVED: To allow air having appropriate speed to pass through cultivation shelves without surrounding the cultivation shelves.SOLUTION: A plurality of passages (31 to 37) in a cultivation room (S1) have: installation passages (32, 34, 36) provided with air conditioners (62a to 66b)； non-installation passages (31, 33, 35, 37) which are positioned next to the installation passages (32, 34, 36) and where the air conditioners (62a to 66b) are not installed. First induction fans (71 to 77) are installed to the non-installation passages (31, 33, 35, 37), and generate airflow which draws air on the installation passages (32, 34, 36) side including air after air conditioning which is blown out from the air conditioners (62a to 66b) from the installation passages (32, 34, 36) side to the non-installation passages (31, 33, 35, 37) side.SELECTED DRAWING: Figure 5【課題】栽培棚を囲わずとも、栽培棚に適切な風速の空気を通過させる。【解決手段】栽培室（S1）内の複数の通路（31～37）は、空調機（62a～66b）が設置された設置通路（32,34,36）と、設置通路（32,34,36）の隣に位置し空調機（62a～66b）が設置されていない非設置通路（31,33,35,37）とを有する。第１誘引ファン（71～77）は、非設置通路（31,33,35,37）に設置されており、空調機（62a～66b）から吹き出された空調後の空気を含む設置通路（32,34,36）側の空気を、設置通路（32,34,36）側から非設置通路（31,33,35,37）側に引き込む気流を生成する。【選択図】図５
