Abstract: A plant cultivation apparatus comprising a cultivation box which has a hollow rhizosphere portion for hanging a root of a cultivation plant, wherein: the cultivation box is constructed by detachably combining an upper panel and a lower panel; a bottom wall of the lower panel is provided with a waste liquid port and a trough-shaped gutter is detachably installed below the bottom wall of the lower panel over an entire length in a length direction; the upper panel is provided with nozzle-mounting holes at intervals in the length direction; a nozzle for spraying nutrient solution is inserted into each of the nozzle-mounting holes and hung in the rhizosphere portion; the upper panel is provided with planting holes for the cultivation plant; and a root of the cultivation plant is inserted into the planting hole and hung in the rhizosphere portion, to which the nutrient solution is sprayed from the nozzle.

Abstract: Provided is a pest control device with which it is possible to reliably exterminate pests in a cultivation room. This invention is provided with a spraying means equipped with nozzles for spraying a chemical solution containing a pest control agent into a plant cultivation room. Liquid droplets being sprayed from the nozzles measure 100 ?m or smaller, and have an average particle diameter of 10-30 ?m. The nozzles are disposed so that the spray from the nozzles fills the entirety of the plant cultivation room interior in a uniform manner. The invention is provided with a control device for causing the nozzles to spray so that the humidity in the plant cultivation room is 90-100%.