| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a siphon type hydroponic cultivation device effectively preventing the root rot of a plant and capable of changing the characteristic of sound generated from the siphon part. <P>SOLUTION: This hydroponic cultivation device is equipped with a cultivation vessel 11, a flowing-in means 12 and a flowing-out means 13. The cultivation vessel 11 has a supporting means 15 for supporting the plant 2, at its upper part, and flowing-out means 13 has, in the lower direction of the supporting means 13, an inducing-in part 133a extending in reverse direction to an approximately perpendicular direction in the cultivation vessel 11, the inducing-out part 133b extending in the approximately perpendicular direction in the cultivation vessel 11 and a siphon part 133 formed as a reverse U-shape consisting of a curved top part 133c joining the inducing-in part 133a with the inducing-out part 133b. A sucking port 131 is arranged in the vicinity of a bottom part 111 in the cultivation vessel 11, and a discharging port 132 is arranged at the outside of the cultivation vessel 11 and also at the lower direction of the siphon part 133. <P>COPYRIGHT: (C)2008,JPO&INPIT |
