PROBLEM TO BE SOLVED: To provide a culture medium for cultivating tomatoes, and a cultivation device of tomatoes and a cultivation method of tomatoes using the medium which have sufficient water holding property for growth of tomatoes, can selectively grow tomatoes having strong sour taste and weak umami flavor.SOLUTION: There are provided a culture medium for cultivating tomatoes which uses a chip containing ethylene-vinyl alcohol copolymer, in which a shape of the chip is columnar, flat or flaky, arithmetic average roughness, which is measured according to JIS B0601, of a side surface in a columnar chip, a curved surface in a circumferential direction with a shorter direction as a central axis in a flat chip, and a principal surface in a flaky chip is 0.05 μm or more, and a cultivation device of tomatoes and a cultivation method of tomatoes using the medium.SELECTED DRAWING: Figure 1【課題】トマト類の生育に十分な保水性を持ち、酸味が強く旨味が弱いトマト類を選択的に生育させることのできる、トマト類栽培用培地、並びにこれを用いたトマト類栽培装置およびトマト類栽培方法を提供する。【解決手段】エチレン－ビニルアルコール共重合体を含むチップを用いたトマト類栽培用培地であって、前記チップの形状が柱状、扁平状またはフレーク状であり、柱状のチップにおいては側面、扁平状のチップにおいては短手方向を中心軸とした周方向の曲面、フレーク状のチップにおいては主面の、ＪＩＳ Ｂ０６０１に準拠して測定される算術平均粗さが０．０５μｍ以上であるトマト類栽培用培地、並びにこれを用いたトマト類栽培装置およびトマト類栽培方法。【選択図】図１
