PROBLEM TO BE SOLVED: To provide a plant cultivation method capable of improving work efficiency.SOLUTION: A hydroponics method uses a hydroponics system in which a first plant cultivation apparatus 1A which performs hydroponics to plants S by using first liquid fertilizer supplied from a first supply channel 31 and is capable of mounting a tray conveying device 6 on which a plurality of cultivation trays 4 mounting the plants S thereon are mounted, and a second plant cultivation apparatus 1B which performs hydroponics to the plants S by using second liquid fertilizer, which is supplied from a second supply channel 32 and has a different component from the first liquid fertilizer, and is capable of mounting the tray conveying device 6 are arranged face to face with a passage A laid between them. The method includes a process of taking out the whole tray conveying device 6 on which the plurality of cultivation trays 4 mounting the plants S thereon are mounted from the first plant cultivation apparatus 1A, and moving the conveying device to the second plant cultivation apparatus 1B via the passage A.【課題】作業効率を高くすることができる水耕栽培方法を提供する。【解決手段】第１の供給路３１から供給された第１の液肥を用いて植物Ｓを水耕栽培し、該植物Ｓを載せた複数の栽培トレー４が載置されたトレー搬送器具６を搭載可能な第１の植物栽培装置１Ａと、第２の供給路３２から供給され、前記第１の液肥とは成分の異なる第２の液肥を用いて前記植物Ｓを水耕栽培し、前記トレー搬送器具６を搭載可能な第２の植物栽培装置１Ｂとが通路Ａを挟んで向かい合わせに配置された水耕栽培システムを用いた水耕栽培方法であって、前記植物Ｓを載せた複数の栽培トレー４が載置されたトレー搬送器具６ごと前記第１の植物栽培装置１Ａから取り出し、前記通路Ａを介して前記第２の植物栽培装置１Ｂに移動する工程を含む。【選択図】図７
