PROBLEM TO BE SOLVED: To provide a hydroponic cultivation method capable of cultivating plants without using chemical fertilizer and to provide a hydroponic cultivator that can be suitably used for the hydroponic cultivation method.SOLUTION: The present invention provides a method for growing a plant by contacting a medium B having water absorbency capable of growing a root of a plant P with a culture solution S. The method comprises: storing the culture solution S to be contacted with the medium B in a cultivation tank 2 providing the inside of the cultivation tank 2 with a mesh part 4 immersed in the culture solution S, and using as the culture solution S a deep ocean deep water culture solution in which the solid content of ocean deep sea water is dissolved in water.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】化学肥料を用いることなく植物を栽培することのできる水耕栽培方法を提供する、また、その水耕栽培方法に好適に用いることのできる水耕栽培器を提供する。【解決手段】植物Pが根を生やすことのできる吸水性を有する培地Bを培養液Sに接触させて植物を育てる水耕栽培方法であって、培地Bを接触させる培養液Sを栽培槽2に溜め、栽培槽2の内部に培養液Sに浸漬して網部4を設け、培養液Sとして、海洋深層水の固形分を水に溶解した海洋深層水培養液を用いる。【選択図】図1
