| 摘要 |
PURPOSE:To facilitate the uniform watering in shortened time in the watering unit for plant cultivation. CONSTITUTION:A spacer 3 is placed in the cultivation bed 1 and plant- supporting vessels 2 having the bottom perforated are kept horizontal at the same level. The unit is equipped with a solution feeder 4, drainer 5, feeder timer 6 and drainer timer 7 for controlling their operations, level switch for the feeder 8 and level switch for the drainer 9 to effect automatic watering from the bottom of the plants. |
