PROBLEM TO BE SOLVED: To provide a yield distribution calculation device capable of accurately calculating correspondence between the position of a farm field and a grain amount.SOLUTION: A yield distribution calculation device includes an acquisition part and a calculation part. The acquisition part acquires a detection value of a GNSS receiver for detecting the position of a combine, a detection value of a straw amount sensor for detecting a straw amount conveyed in the combine, and a detection value of a grain sensor for detecting a grain amount harvested by the combine. The calculation part calculates yield distribution indicating the grain amount according to the position based on the straw amount distribution, which is a change in the straw amount according to the position or the time acquired based on the detection values of the position of the combine and the straw amount acquired by the acquisition part, and the detection value of the grain amount acquired by the acquisition part.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2018,JPO&INPIT【課題】圃場の位置と穀粒量の対応関係を正確に算出可能な収量分布算出装置を提供する。【解決手段】収量分布算出装置は、取得部と、算出部と、を備える。取得部は、コンバインの位置を検出するGNSS受信機の検出値と、コンバインを搬送される藁量を検出する藁量センサの検出値と、コンバインで収穫された穀粒量を検出する穀粒センサの検出値と、を取得する。算出部は、取得部が取得したコンバインの位置及び藁量の検出値に基づいて得られる、位置又は時間に応じた藁量の変化である藁量分布と、取得部が取得した穀粒量の検出値と、に基づいて、位置に応じた穀粒量を示す収量分布を算出する。【選択図】図8
