Problem to be solved: to provide an agricultural cultivation support device capable of realizing an environment suitable for cultivation of agricultural products, a farming product cultivation system, and a method for supporting agricultural product cultivation.Light intensity of cultivation spaceCarbon dioxide concentrationAnd temperatureIt is the photosynthetic element regulated by the regulatorA photosynthetic rate calculator 21 that calculates a single photosynthetic rate from all photosynthetic elementsIf the calculated photosynthetic rate is less than the reference valueBased on the correlation model between the photosynthetic rate and all photosynthetic elementsSo that the calculated value is above the reference valueA photosynthetic rate control unit 22 for controlling the driving of the regulator.Diagram
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