| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem that lamination stage number of cultivation shelves is limited because weights of water or culture solution, and light sources, are heavy, or high construction cost is caused in order to secure the strength of a cultivation building.SOLUTION: In a hydroponic culture apparatus, water is sequentially fed to a water supply line so that the water supply line has a full water state and a small water quantity state to decrease a total amount of water or culture solution. Carbon dioxide is absorbed into a plant root between a cultivation board and the water supply line, which is promoted by swinging the plant root caused by a water stream so that cultivation becomes possible with a small light amount to decrease a weight of light sources.</p> |
