| 摘要 |
PURPOSE:To facilitate movement of supporting beam and prevent fall by making level of liquid surface of culture water in a culture tank variable and keeping a plant-planting part ot the supporting beam to prescribed low position in a hydroponic culturing device in which the supporting beam for planting the crop is provided movably in the horizontal direction. CONSTITUTION:Both ends of a supporting beam 11 is raised upward and a supporting part 12 for hanging the supporting beam 11 is provided and engaged to side wall of a culture tank 14 movably to horizontal direction. Then the aimed device is constituted so that the center of gravity of the supporting beam 11 becomes lower than the position of the supporting part 12 even when a crop 13 became larger by providing a crop 13-planting part of the supporting beam 11 in the position lower than that of the supporting part 12. Then the crop 13 is subjected to hydroponic culture by feeding the culture water 15 to the culture tank 14 and intervals of the supporting beam are made larger as the crop grows. In this time, the surface of the culture water 15 is raised up to the position coming into contact with the bottom of the supporting beam 11 and the supporting beam 11 is moved in the horizontal direction by giving buoyant force to the supporting beam 11. |
