CULTIVATION DEVICE

PROBLEM TO BE SOLVED: To provide a cultivation device suppressing reproduction of algae, and efficiently sterilizing culture solution. SOLUTION: This cultivation device includes a cultivation tank for storing a culture medium for hydroponically cultivating plants, a shading tank for storing culture solution for hydroponically cultivating plants, a supply pipe supplying culture solution from the shading tank to the cultivation tank, a collection pipe discharging culture solution flowing on the culture medium from the cultivation tank to the shading tank, a photocatalyst installed in the shading tank and sterilizing culture solution, and a light source installed in the shading tank and emitting about ≤400 nm wavelength light sterilizing culture solution toward the photocatalyst. COPYRIGHT: (C)2011,JPO&INPIT