PROBLEM TO BE SOLVED: To accurately perform partial additional fertilization with respect to variations in growth after crop growth, by using an existing work machine comprising no expensive controller.SOLUTION: A work position indicator 1 comprises: a GPS receiver 2 for outputting positional information on the present position at any time information storage means 3 in which positional information on a work target section partially set in a work section is stored calculation processing means 4 for comparing the positional information on the present position output by the GPS receiver 2 with the positional information on the work target section to output whether or not the present position is within the work target section and reporting means 5 for acting on the basis of the output of the calculation processing means 4 to report that the present position is within the work target section.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】高価な制御装置を備えない既存の作業機を用いて、作物生育後の生育ばらつきに対して行われる部分的な追肥を精度良く行う。【解決手段】作業位置指示装置1は、現在位置の位置情報を随時出力するGPS受信機2と、作業区画内に部分的に設定された作業対象区域の位置情報が記憶された情報記憶手段3と、GPS受信機2が出力する現在位置の位置情報を作業対象区域の位置情報と比較して、現在位置が作業対象区域内であるか否かを出力する演算処理手段4と、演算処理手段4の出力によって動作し、現在位置が作業対象区域内であることを報知する報知手段5とを備える。【選択図】図1
