CARBON DIOXIDE APPLICATION SYSTEM AND CARBON DIOXIDE APPLICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a carbon dioxide application system and a carbon dioxide application method with which an environment suitable for growing garden plants can be created in an agricultural house and the loss of carbon dioxide can be suppressed without using a carbon dioxide concentration sensor.SOLUTION: The carbon dioxide application method comprises: a supply step for driving a carbon dioxide supply apparatus 10 for two minutes (a predetermined first time) and stopping an air circulation fan 31 during the two minutes; and a dispersion step for stopping the carbon dioxide supply apparatus 10 and the air circulation fan 31 for two minutes (a predetermined second time) after execution of the supply step. The carbon dioxide application method repeats the supply step and the dispersion step alternately. If the temperature T within an agricultural house AH rises to T2 or higher during the execution of the supply step or the dispersion step, the carbon dioxide application method prohibits the driving of the air circulation fan 31 until the time the dispersion step following the temperature rise terminates comes.