| 摘要 |
PROBLEM TO BE SOLVED: To provide a sterilization device for a circulation type nutritive solution culture device, capable of removing waste matters excreted from the roots of plants, suppressing the propagation of pathogenic microbes for root rots, etc., in the culture solution, and unnecessitating the exchange of the culture solution or remarkably reducing the number of the exchange operations, excellent in environmental pollution prevention and realizing the culture free from an agrochemical by using activated carbon. SOLUTION: Activated carbon such as silver-adhered activated carbon or activated carbon to whose surfaces titanium dioxide is adhered is used. This sterilization device for a circulation type nutritive solution culture device has an activated carbon-charged tank 5 and preferably further an ultraviolet light- irradiating device and a titanium dioxide tank. |
