| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plant cultivation machine allowing to easily perform cleaning work including resin sheet change by preventing caulking material ingredients from melting into a water culture medium and affecting plants. <P>SOLUTION: This plant cultivation machine is such that a gutter-like drainage tank 4 for receiving a water culture medium to be discharged from a cultivation tank 2 is arranged in a removable manner, adjacent to the cultivation tank 2 for cultivating plants by soaking in a water culture medium, and synthetic resin sheets 6 are covered in a series on the upper surface of the cultivation tank 2 and the upper surface of the drainage tank 4 along the inner surface of each of the tanks. Furthermore, an overflow part overflowing a water culture medium to the drainage tank 4 is formed on a wall of the cultivation tank 2, adjacent to the drainage tank 4, a discharge port 24 for discharging a water culture medium derived to the lower side of the sheets when cleaning is formed on the end position on the bottom of the cultivation tank 2, and a drainage port 42 connected with a drainage tube 43 is formed on the bottom of the drainage tank 4. The drainage tube 43 communicates with a water culture medium tank 8 for adjusting nutrition in a water culture medium and circulating to the cultivation tank 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
