PROBLEM TO BE SOLVED: To provide a method for predicting growth of a turf grass clump in high accuracy.SOLUTION: The method for predicting growth of a turf grass clump having leaf parts and root parts, includes: a step for calculating the photosynthesis amount in which the photosynthesis amount in the turf grass clump is calculated based on the abundance of the leaf parts and the abundance of the root parts a step for calculating a volume of distribution in which a volume of distribution to the leaf parts and a volume of distribution to the root parts when photosynthetic products corresponding to the photosynthesis amount are distributed to the leaf parts and the root parts, are respectively calculated a step for calculating a growth amount in which a growth amount of the leaf parts is calculated based on the volume of distribution of the photosynthetic products to the leaf parts, and the growth amount of the root parts is calculated based on the volume of distribution of the photosynthetic products to the root parts and a step for changing abundance in which the abundance of the leaf parts is changed based on the growth amount of the leaf parts, and the abundance of the root parts is changed based on the growth amount of the root parts. The calculation results in the step for changing abundance at a certain point of time are utilized in the step for calculating a photosynthesis amount at another point of time after the former certain point of time.COPYRIGHT: (C)2012,JPO&INPIT【課題】精度の高い芝草群落の生長予測方法を提供する。【解決手段】葉部と根部を有する芝草群落の生長予測方法であって、葉部の存在量と根部の存在量とに基づいて、芝草群落の光合成量を算出する光合成量算出ステップと、光合成量に応じた光合成産物が葉部と根部に分配されるときの葉部への分配量と根部への分配量をそれぞれ算出する分配量算出ステップと、光合成産物の葉部への分配量に基づいて葉部の生長量を算出し、且つ、光合成産物の根部への分配量に基づいて根部の生長量を算出する生長量算出ステップと、葉部の生長量に基づいて葉部の存在量を変更し、且つ、根部の生長量に基づいて根部の存在量を変更する存在量変更ステップと、を有し、或る時点の存在量変更ステップの演算結果を、或る時点以降の他の時点の光合成量算出ステップに用いる。【選択図】図14
