HYDROPONIC METHOD AND HYDROPONIC APPARATUS

PROBLEM TO BE SOLVED: To cultivate flaccid vegetables, etc., irrespective of areas and seasons by hydroponics. SOLUTION: A hydroponic apparatus is equipped with a bed 2 where a culture solution is stored, a dome 3 for covering the bed 2 from the upper part and a cooling means for cooling the interior of the dome 3. The dome 3 is provided with a sheet 33 subjected to opening and closing operation to an opened state for opening the space in the dome 3 to the outside and a closed state for closing the space in the dome 3. The space in the dome 3 is opened to the outside by opening the sheet 33 in the daytime. On the other hand, the space in the dome 3 is closed by closing the sheet 33 and the temperature in the closed space is kept within the prescribed temperature range which is a temperature region not higher than a prescribed temperature when the atmospheric temperature around the bed 2 is higher than the prescribed temperature at night. COPYRIGHT: (C)2007,JPO&INPIT