PROBLEM TO BE SOLVED: To aim at the reduction of non-sprayed section on starting the spraying, and the smoothness of translation to vehicle speed-interlocked control.SOLUTION: The spraying controller of particulate materials is provided by: constituting a spraying start-controlling mode from the ON output of a spraying switch 69 to translation to a vehicle speed-interlocked control mode by receiving the input of a work speed signal constituting that within the spraying start-control mode, the number of rotations for delivery by a driving means 25 is set as rotating at a previously set number of rotations constituting that the change of kinds of delivery rolls is limited after passing the spray-starting time-control mode and while a traveling machine body speed is not lower than the prescribed speed by receiving the working speed signal of the traveling machine body or until the speed change becomes within a set range and also constituting that the setting of prescribed time T1 of the spraying start-control mode or prescribed time T2 of a warning output for prompting the start of the machine body can be changed as longer or shorter.COPYRIGHT: (C)2010,JPO&INPIT【課題】散布開始時の無散布区間の減少、及び車速連動制御への移行の円滑化を図る。【解決手段】散布スイッチ69のON出力から前記作業速度信号の入力を受けて車速連動制御モードに移行するまで散布開始制御モードを構成し、この散布開始制御モード中は前記駆動手段25による繰出回転数を予め設定した回転数で回転するよう構成し、この散布開始時制御モードの経過後、前記走行機体の作業速度信号の入力を受けて走行機体が所定の速度以上であるとき、又は速度変化が一定範囲内になるときまでは、前記繰出ロール種類の変更を規制する構成とした。また、散布開始制御モードの所定時間T1又は機体発信を促す警報出力の所定時間T2を長短設定変更する構成とした。【選択図】図13
