PROBLEM TO BE SOLVED: To provide water culture apparatus and hydroponic methods which have extremely few constituent members, are easy to construct, and can perform NFT thin film hydroponics without the change of a culture-medium circulation supply means even if cultivated plants are changed.SOLUTION: The present invention provides a water culture apparatus 1 having a cultivation bath 10, floor-raising blocks 15a to 15f exchangeably contained in the cultivation bath 10, and a plurality of cultivation trays 20a to 20f having planting holes 21, a first liquid reservoir 13 and a second liquid reservoir 14 being formed at both end portions within the cultivation bath 10, a culture medium circulation supply means 23 supplying a culture medium into the first liquid reservoir 13, further a culture medium-flowing groove portion 17 which is formed on the upper surface portion of the plurality of floor raising blocks 15a to 15f flowing the culture medium in a thin film form and flowing it into the second liquid reservoir 14 to subsequently returns it, the plurality of culture medium flowing groove portion 17 in which the culture medium flows in a thin film form catching a root tip portion P2 of a cultivated plant P which is planted in the planting hole 21, and thereby NFT thin film hydroponics being performed.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】構成部材の点数が極めて少なくて、組立が容易であり、かつ栽培植物の変更があっても培養液循環供給手段の変更を伴わないで、NFT薄膜水耕を行うことができる水耕栽培装置および水耕栽培方法を提供すること。【解決手段】水耕栽培装置1は、栽培槽10と、栽培槽10内に交換可能に収容する床上げブロック15a~15fと、定植孔21を有する複数の栽培トレイ20a~20fと、を備え、栽培槽10内の両端部に第1の液溜部13と第2の液溜部14を画成し、培養液循環供給手段23により培養液を第1の液溜部13に給送し、さらに培養液を複数の床上げブロック15a~15fの上面部に形成された培養液流し溝部17に薄膜状に流れさせ、第2の液溜部14に流し留めてから還流させ、定植孔21に定植された栽培植物Pの根先部P2を培養液が薄膜状に流れる複数の培養液流し溝部17で受け止めてNFT薄膜水耕を行う。【選択図】図1
