PROBLEM TO BE SOLVED: To provide a plant cultivation system that can diagnose the overall growth conditions of multiple cultivation plants in a short time.SOLUTION: A plant cultivation system has: imaging means Ca for imaging a population of cultivation plants from above； and a growth diagnosis part 23 that determines an inclined coverage area that is an area of thick coverage of a population of cultivation plants seen in a squint state, in an image captured with the imaging means Ca, and calculates a growth index Gi of the cultivation plants on the basis of a proportion of the inclined coverage area in the captured image.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2020,JPO&INPIT【課題】多数の栽培植物の全体的な生育状況を短時間で診断可能な植物栽培システムを提供する。【解決手段】栽培植物の集合体を上方から撮像する撮像手段Ｃａと、撮像手段Ｃａにより取得された撮像画像のうち、斜視状態に映る栽培植物の集合体における繁茂状態の領域である傾斜被覆領域を判別し、撮像画像における傾斜被覆領域の割合に基づいて栽培植物の生育指標Ｇｉを算出する生育診断部２３と、が備えられている。【選択図】図７
