PROBLEM TO BE SOLVED: To provide a hydroponic method for plants by which autointoxication is hardly caused with more practicality than a conventional method.SOLUTION: The hydroponic method in a nearly closed system for the plants includes reducing the concentration of a growth inhibitor exuded from roots of the plants into a nutrient solution by electrolyzing the nutrient solution. The concentration of the growth inhibitor exuded from the roots of the plants into the nutrient solution may be reduced by electrolyzing the nutrient solution for the plants circulated in the nearly closed system. When the nutrient solution for the plants circulated in the nearly closed system is electrolyzed by providing the constitution, effects of the electrolysis, i.e. degrading effects on the inhibitor can be exercised on not only the vicinity of electrodes but also the whole culture solution and the electrolytic effects can uniformly be exercised.COPYRIGHT: (C)2013,JPO&INPIT【課題】自家中毒が発生し難く従来よりも実用的な植物の養液栽培方法を提供しようとするもの。【解決手段】植物の略閉鎖系養液栽培方法であって、植物の根から養液中に滲出する生育抑制物質の濃度を、前記養液の電気分解をすることにより低減するようにした。略閉鎖系で循環せしめる植物の養液の電気分解をすることにより、前記植物の根から養液中に滲出する生育抑制物質の濃度を低減するようにしとしてもよい。このように構成し、略閉鎖系で循環せしめる植物の養液の電気分解をすると、電気分解の効果すなわち抑制物質の分解効果が電極の近くだけでなく培養液全体に及ばせることができ、電解効果を均一に及ぼすことができる。【選択図】図4
