| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydroponic method for cultivating agricultural crops efficiently cyclically using nutrient solution in simplified facilities without needing large-scale facilities for a nutrient solution storage tank and a storage tank of used nutrient solution. <P>SOLUTION: This hydroponic method comprises supplying nutrient solution to a cultivation bed, sucking up used nutrient solution discharged from the cultivation bed and held in a storage tank with water flow at the time of supplying the nutrient solution to the cultivation bed, and mixing the used nutrient solution with new nutrient solution to supply to the cultivation bed. The mixing rate of the used nutrient solution with the new nutrient solution is ≤50 wt.%. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
