PROBLEM TO BE SOLVED: To provide a plant cultivation device capable of easily adjusting the concentration of oxygen dissolved in water, facilitating switching high/low concentration of oxygen dissolved, and supplying the appropriate water for growing to a plant.SOLUTION: The plant cultivation device includes: an air conditioning means 2 generating high oxygen concentration air, in which oxygen partial pressure is higher than air, and low oxygen concentration air, in which oxygen partial pressure is lower than air, and supplying them while switching them a dissolving tank 3 supplied with water, communicating to the air conditioning means, supplied with the high oxygen concentration air or the low oxygen concentration air from the air conditioning means, dissolving the high oxygen concentration air or the low oxygen concentration air in water, and generating air dissolved water and a water supply means 4 supplying air dissolved water which is generated in the dissolving tank to a plant.COPYRIGHT: (C)2011,JPO&INPIT【課題】水中の溶存酸素濃度を簡便に調節することができ、溶存酸素濃度の高低の切り替えを容易に行い、育成に適した水を植物に供給することのできる植物栽培装置を提供すること。【解決手段】酸素分圧を空気よりも高めた高酸素濃度空気と、酸素分圧を空気よりも低くした低酸素濃度空気とを生成し、高酸素濃度空気と低酸素濃度空気を切り替えて供給する空気調節手段2と、水が供給されるとともに、空気調節手段に連通し、空気調節手段から高酸素濃度空気または低酸素濃度空気が供給され、水中に高酸素濃度空気または低酸素濃度空気を溶解させ、空気溶解水を生成する溶解タンク3と、溶解タンクで生成した空気溶解水を植物に供給する給水手段4とを備えている。【選択図】図1
