| 摘要 |
PURPOSE:To uniform the degree of growth of plants in a tank by sowing seeds in a unit tank having many holes made in the bottom, putting another unit tank on top of it and making the germinated gregaloid plants lift the upper-layer unit tank. CONSTITUTION:Seeds are sown in a top-opened shallow unit tank 2 having many holes 1a in the bottom and another unit tank is put on top of it. Water sprayed from the above is allowed to flow down so as to germinate gregaloid plants (P) in the unit tank. The upper-layer unit tank is lifted by the gregaloid plants themselves on the course of growth. |
