TOMATO SEEDLING RAISING METHOD, SEEDLING RAISING APPARATUS AND PLANT FACTORY

摘要

PROBLEM TO BE SOLVED: To provide a tomato seedling raising method, a seedling raising apparatus and a plant factory which are capable of suppressing onset of viral diseases, safe, and excellent in economical efficiency.SOLUTION: The tomato seedling raising method of the present invention comprises a step of irradiating tomato seedlings with light by using LED light sources, where the LED light sources used in the step include a wavelength region of 280 nm or more and 290 nm or less and about light to be irradiated to tomato seedlings, an irradiation amount of a wavelength component of 280 nm or more and 290 nm or less is 0.7 kJ/mor more and 1.4 kJ/mor less per day. The tomato seedling raising method of the present invention can be easily performed by installing LED light sources in a seedling raising apparatus and in a plant factory, the LED light sources being capable of irradiating tomato seedlings with light of a wavelength region of 280 nm or more and 290 nm or less in an irradiation amount of 0.7 kJ/mor more and 1.4 kJ/mor less per day.