| 摘要 |
PURPOSE:To raise fertilizer efficiency of liquid fertilizer and to enable culture of plant unsuitable for acquiculture, by oxidizing a liquid fertilizer from a liquid fertilizer tank with an aerobic microorganism, aging and feeding the liquid fertilizer to a plant culture bed. CONSTITUTION:A liquid fertilizer to be fed from a liquid fertilizer tank 1 to a plant culture bed 2 is not directly fed to the plant culture bed 2 but first sent to an oxidizing and aging part 4. In the part the liquid fertilizer is biologically oxidized with an aerobic microorganism and aged. The liquid fertilizer thus oxidized and aged is fed to the plant culture bed 2. The liquid fertilizer may be introduced to the oxidizing and aging part 4, sent to a part 5 to elute a very small amount of element and a very small amount of the element may be added to the liquid fertilizer. |
