PROBLEM TO BE SOLVED: To easily stop rowing in a work vehicle with a plurality of planting/sowing work units that performs seedling planting or sowing work in such a manner as to form a plurality of rows on a field H.SOLUTION: The work vehicle includes: deformed boundary determination means 52 that sets up, on the basis of external shape information of a field H, a ridge edge range HA in which a rice transplanter 1 rotationally turns or enters/leaves the field H, at a peripheral part of the field H, and a rowing range HB in which the rice transplanter performs reciprocating work at rows inside the ridge edge range HA, that can drive/stop any unit out of a plurality of planting/sowing work units, and that, while working in the rowing range HB, when it approaches to a boundary between the rowing range HB and the ridge edge range HA, determines whether the boundary is a deformed side C or not and determination means 53 that determines a planting unit to be stopped out of the planting units as the plurality of planting/sowing work units, on the basis of information from the deformed boundary determination means 52.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2019,JPO&INPIT【課題】圃場Hに複数の条列を成すように苗植え作業または播種作業を行う複数の稙播系作業ユニットを備えた作業車両において、容易に条止めができるようにする。【解決手段】圃場Hの外形情報を基に、圃場Hの周辺部に田植機1の旋回または圃場Hからの入退出を行う畦際範囲HAと、当該畦際範囲HAの内側に往復の条列で作業を行う条作業範囲HBを設定し、複数の稙播系作業ユニットの中の任意ユニットを駆動・停止可能とし、条作業範囲HBの作業時に、条作業範囲HBと畦際範囲HAの境界に接近した場合に、前記境界が変形辺Cかどうかを判断する変形境界判断手段52を設け、変形境界判断手段52からの情報を基に、複数の稙播系作業ユニットとしての植付ユニットの中の停止すべき植付ユニットを判断する条止め判断手段53を設けた。【選択図】図6
