| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydroponic device installed with cultivation containers in a multistage form, and allowing to lessen the water supply amount per time with a pump while securing a necessary water amount to supply to each cultivation container. <P>SOLUTION: This hydroponic device arranged with cultivation containers 3 in a vertical multistage form includes using for each of the cultivation containers 3, two kinds of a mountain fold-like container 31 inclined downward only by a small angle from a length direction central part to each end part, and a valley fold-like container 32 inclined downward only by a small angle in a length direction from each end part to a central part, and arranging sequentially alternatively the mountain fold-like containers 31 and the valley fold-like containers 32 in a multistage form. Furthermore, the device includes supplying nutritious liquid in a nutritious liquid tank 20 to the highest position of the highest stage container with a nutritious liquid circulating device 2, letting nutritious liquid naturally flow from the lowest position of the upper stage container to the highest position of the lower stage container in the containers of each stage vertically adjacent to each other, and letting nutritious liquid naturally flow from the lowest position of the lowest stage container into the nutritious liquid tank so as to circulate nutritious liquid between the nutritious liquid tank and each of the cultivation containers. <P>COPYRIGHT: (C)2013,JPO&INPIT |
