| 摘要 |
PROBLEM TO BE SOLVED: To provide a culture system enabling abalones to intake diatom required for crust formation, which is essential for the abalones, and capable of reducing an exchange frequency of a rearing water and reducing carbon dioxide, nitrate nitrogen, and the like in a rearing tank.SOLUTION: The abalone culture system comprises a rearing tank 2 as a water tank for culturing abalones, a solid-foreign matter recovery device 2 for separating solid substances in the rearing water by cyclone, a cyclone-type dirt collection device 4, an activation device 5 for blowing a drug solution, oxygen, air, and the like into the rearing water, an algae cultivation device 7 for cultivating algae by allowing the algae to absorb components in the rearing water through photosynthesis, a heat exchange pipe 9 for heating or cooling the rearing water with underground heat, and a microorganism filtration tank 1 for decomposing organic substances with the microorganism. An aqueous solution and the like of potassium silicate or sodium silicate is mixed into the rearing water by a cavitation action in order to allow the diatom, essential for the crust growth of the abalones, to thickly grow.SELECTED DRAWING: Figure 1 |
