PROBLEM TO BE SOLVED: To solve the problems that fertilizer is overlappedly scattered and that the growth of products is not stable due to a variation in fertilizer supply because a conventional fertilizer applicator does not take a time lag during supply stop into consideration.SOLUTION: In a work vehicle, a vehicle body (2) is provided with a fertilizer applicator (5) for scattering fertilizer in a farm field, the body includes a GPS (24) for position recognition, and an information processing device (25) for processing information, and the information processing device is provided with a map function (Ma). The work vehicle includes: means for calculating a farm field shape with the map function (Ma), recognizes the position of a machine body with the GPS (24), and detects a farm field edge by using the map function (Ma) and the GPS (24) and means for stopping fertilizer scattering of the fertilizer applicator (5) in the case that the map function and the GPS detect that a ridge exists at a distance where the body machine is within a prescribed value.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】従来の施肥装置は、供給停止のタイムラグを考慮されていない。このため、肥料を重複して散布する問題や肥料供給のバラツキによる作物の生育が安定しない問題があった。【解決手段】本発明は、走行車体(2)に圃場内へ肥料を散布する施肥装置(5)を備え、車体に位置認識のためのGPS(24)と、情報を処理する情報処理装置(25)とこの情報処理装置にマップ機能(Ma)を備えた作業車両において、マップ機能(Ma)により圃場形状を算定し、GPS(24)により機体の位置を認識し、マップ機能(Ma)とGPS(24)を用いて圃場端を検知する手段を備え、マップ機能とGPSにより機体が規定値以内の距離に畦がある場合、施肥装置(5)の肥料散布を停止する手段を設ける。【選択図】図1
