PROBLEM TO BE SOLVED: To provide a convenient method for diagnosing the growing state of a plant, capable of performing objective determination, and a device used for the same.SOLUTION: As a method for diagnosing the growing state of a plant, the growing state is diagnosed by a delayed light emission-measuring step of measuring the delayed light emission of leaves of the plant under a prescribed temperature condition to obtain delayed light emission data, a chlorophyll-measuring step of measuring the amount of chlorophyll of the leaves of the plant to obtain chlorophyll data, a delayed light emission amount-correcting step of obtaining first and second delayed light emission amounts based on the delayed light emission data and chlorophyll data, and correcting each of them with the chlorophyll amount per the prescribed area of leaves of the plant to calculate the corrected first and second delayed light emission amounts and a determining step of determining the activity of the plant at the neighborhood part of leaves of the plant based on the comparison of the corrected first and second light emission amounts calculated by the delayed light emission amount-correcting step with the corrected first and second light emission amounts becoming the standard of the plant.COPYRIGHT: (C)2013,JPO&INPIT【課題】簡便で、客観的な判定が可能な、植物の生育状態を診断する方法及びこれに用いられる装置を提供する。【解決手段】植物の生育状態を診断する方法として、所定の温度条件下で植物の葉の遅延発光を測定し、遅延発光データを取得する、遅延発光測定ステップと、植物の葉のクロロフィル量を測定し、クロロフィルデータを取得する、クロロフィル測定ステップと、遅延発光データ及びクロロフィルデータを基に、第一及び第二の遅延発光量とを求め、それぞれ植物の葉の所定の面積あたりのクロロフィル量で補正して第一及び第二の補正遅延発光量とを算出する、遅延発光量補正ステップ及び遅延発光量補正ステップで算出した第一及び第二の補正遅延発光量と、植物の基準となる第一及び第二の補正遅延発光量との比較に基づいて、植物の葉の近傍部分における植物の活力を判定する判定ステップにて生育状態を診断する。【選択図】図1
