Problem to be solved: to elucidate the environmental control to increase the biosynthetic amount of folate by changing the temperature conditions in addition to the light quality conditions, and to provide the production method of leafy vegetables which can produce leafy vegetables with high folate and production of vegetable vegetables.Solution: the red light, light blue, green and green light source plant cultivation apparatus 1 under the artificial light controlled under the artificial illumination controlled light of the red, blue and green light, the light irradiation Part 5 for irradiating the vegetable 3 with light, and the red, blue and green light irradiated by the light irradiation Part 5 to increase the concentration of the folate The control section 7 controls at least one of the ratio and the photosynthetic effective quantum quantum density (PPFD) and the growth environment temperature.Diagram【課題】 光質条件の他、温度条件も変化させて、葉酸塩の生合成量を増加させる環境制御の解明を試み、高葉酸塩の葉菜類野菜を生産できる葉菜類野菜の生産方法及び葉菜類野菜の生産装置を提供する。【解決手段】 赤色、青色及び緑色の光を制御した人工照明下での水耕栽培による野菜のRGB独立調光光源植物栽培装置1は、野菜3に対して光を照射する光照射部5と、葉酸塩の濃度を増加させるために、光照射部5が照射する赤色、青色及び緑色の光の比率及び光合成有効光量子束密度(PPFD)並びに生育環境温度の少なくとも1つを制御する制御部7を備えている。【選択図】 図1
