PROBLEM TO BE SOLVED: To appropriately supply liquid fertilizer and water as a compact structure. A plant cultivation apparatus includes a liquid fertilizer supply unit that supplies a liquid fertilizer in a mist state, an adsorbed state in which water in the air is adsorbed by a conductive polymer film depending on whether or not electricity is applied, and the adsorbed water is uncharged. A fine water generation part that changes into a release state in which the fine water having a particle size of 50 nanometers or less is released from the conductive polymer film, and an energization part that can energize the fine water generation part. Liquid fertilizer supply control that drives the fan so that liquid fertilizer is supplied by the liquid fertilizer supply unit, and fine water that drives the energizing unit and the fan so that the fine water discharged from the fine water generation unit is supplied. The supply control and the supply preparation control for stopping the energization of the energizing unit so that the fine water generating unit is in the adsorption state are executed. [Selection diagram] Figure 2【課題】液体肥料の供給と水分の供給とをコンパクトな構成として適切に行う。【解決手段】植物栽培装置は、霧状の液体肥料を供給する液体肥料供給部と、通電の有無により導電性高分子膜に空気中の水分を吸着する吸着状態と吸着した水分を無帯電且つ粒径が５０ナノメートル以下の微細水として導電性高分子膜から放出する放出状態とに変化する微細水発生部と、微細水発生部に通電可能な通電部とを備える。そして、液体肥料供給部により液体肥料が供給されるようにファンを駆動する液体肥料供給制御と、微細水発生部から放出された微細水が供給されるように通電部とファンを駆動する微細水供給制御と、微細水発生部が吸着状態になるように通電部の通電を停止する供給準備制御と、を実行する。【選択図】図２
