| 摘要 |
A hydroponic plant cultivation device (10) is disclosed, wherein at least one rotating cultivation tower (14) is arranged. The tower is formed by stacking a plurality of cultivation units (16) each of which has a plurality of ports (165a) for receiving and maintaining the lower ends of plants to be cultivated, a nozzle (227) for spraying a nutrient liquid (NL) therein, and a portion (162) which accommodates a constant amount of the liquid and hat a tubular member (168) to allow overflow of any excess liquid to a lower cultivation unit. The nutrient liquid is measured on and adjusted in its concentration and pH, and recycled between the tower and its supply source (123). |
