PROBLEM TO BE SOLVED: To provide a paddy field working machine capable of feeding an agricultural material to a farm field uniformly regardless of the travel speed of a traveling machine body.SOLUTION: A paddy field working machine comprises a fertilizing device for feeding fertilizer to a farm field. The fertilizing device comprises a hopper for storing the fertilizer, and a delivery mechanism for delivering the fertilizer stored in the hopper. The delivery mechanism comprises: a delivery roll in which a storage part capable of temporarily storing the fertilizer stored in the hopper and then discharging the fertilizer to the farm field side is formed a balance type drive mechanism for rotating the delivery roll on the basis of branch power branched from a transmission system for traveling an adjustment mechanism capable of adjusting a preset amount of the fertilizer to be fed per unit area of the farm field and an amount adjusting motor 47 capable of operating the adjustment mechanism. The farm field working machine also comprises a wheel rotation sensor 19 for detecting a travel speed of a traveling machine body, and a control device 118 for controlling the amount adjusting motor 47 so as to increase the preset amount when the travel speed increases.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2017,JPO&INPIT
