| 摘要 |
PURPOSE:To carry out artificial culture in high efficiency at a low cost by providing the minimum number of apparatuses for controlling pH and fertilizer concentration and controlling the culture liquids in plural culture tanks to the conditions suitable for individual different kinds of plants in the tanks. CONSTITUTION:Culture liquids 11-15 in parallelly arranged culture tanks 1-5 are successively controlled by judging whether a remote operation valve is opened or not by a control panel 37 of an apparatus for controlling pH and fertilizer concentration, introducing the culture liquid from the above culture tank into an adjustment tank 30 and adjusting the concentration of the culture liquid in the adjustment tank 30 to a level suitable for the plant cultured in the above culture tank. In the above case, a circulation pump 48 is operated for a definite period, the fertilizer concentration and pH are detected by sensors 38, 39 and judgement is made on the suitability of the culture liquid for the culture of the above plant based on the detected values. When the result is inadequate, the condition is adjusted and when it is adequate, the remote control valve of the culture tank is closed and the adjustment work is transferred to the next culture tank. |
