The purpose of this study is to improve the accuracy of evaluating the lodging of crops.Solution: an apparatus for evaluating the degree of lodging of a crop using a harvesting farm equipped with a position measuring part, and a position based speed data acquisition part for obtaining the speed of the harvesting machine at the position measured by the position measuring part and the above described yield An apparatus for evaluating the degree of lodging of a crop which is based on the reference value of the speed of the harvesting machine, and has a standardized processing part which standardizes the speed of the harvesting machine and is an index of the degree of lodging of the crop.Diagram【課題】農作物の倒伏度を評価するための精度を上げることを目的とする。【解決手段】位置測定部を備えた収穫用農機を利用した作物の倒伏度評価装置であって、前記位置測定部により測定した位置における前記収穫用農機の速度を取得する位置別速度データ取得部と、予め求めておいた前記収穫用農機の速度の基準値に基づいて、前記収穫用農機の速度を標準化し、作物の倒伏度の指標とする標準化処理部と、を有することを特徴とする作物の倒伏度評価装置。【選択図】図4