PROBLEM TO BE SOLVED: To provide a cultivation method of fruit vegetables or fruits, enabling automization without depending the technical skill of a grower.SOLUTION: This cultivation method comprises sequentially calculating soluble solid content (SSC) to be predictive sugar content from a dry matter ratio (DM) and starch content which are obtained with an inner component information measuring device 1 after cultivated fruits bear fruit, and outputting when predictive sugar content is smaller than target sugar content input in a comparison device 11b, a prescribed manure concentration and a prescribed supply amount of nutrient solution with a prescribed concentration or a supply number of times of the prescribed amount of nutrient solution, from a nutrient solution supply controlling device in a cultivation condition setting device 11c so as to give water stress, for a prescribed period before performing PID control after bearing fruit. Furthermore, the method comprises setting a cultivation condition by PID control after the prescribed period passes after bearing fruit, based on a value of the predictive sugar content, change of the value, and the target sugar content, and outputting each changed numerical value to difference between the predictive sugar content and the target sugar content, of the prescribed manure concentration and the prescribed supply amount of nutrient solution of prescribed concentration or the supply number of times of the prescribed supply amount of nutrient solution, from the nutrient solution supply controlling device in the cultivation condition setting device 11c.COPYRIGHT: (C)2008,JPO&INPIT【課題】栽培者の技能に依存しないで自動化が可能な果菜又は果実の栽培方法を提供すること。【解決手段】栽培果実の着果後、内成分情報測定装置1により得られる乾物率(DM)と澱粉含量とから予測糖度となる可溶性固形含量(SSC)を逐次演算し、前記着果後、PID制御に入る前の所定期間は、予測糖度が比較装置11bに入力される目標糖度より小さいとき、水ストレスを与えるべく栽培条件設定装置11c内の養液供給制御装置に所定の肥料濃度、所定濃度の養液の所定供給量又は所定の前記養液量の給液回数を出力する。そして、着果後、所定期間を過ぎると、予測糖度の値並びに該値の変化と目標糖度とに基づいて、PID制御により栽培条件を設定し、栽培条件設定装置11c内の養液供給制御装置に予測糖度と目標糖度との差に対する所定の肥料濃度、所
