PROBLEM TO BE SOLVED: To uniformly mix fertilizer being input to a hopper, and make the fertilizer fall from an opening uniformly.SOLUTION: A fertilizer spreader includes a hopper 2 for making a horizontal shape to a traveling direction, a mixing unit 3 provided at an upper side in the hopper 2, and mixing fertilizer in the hopper 2, and a spreading unit 4 provided at a lower side in the hopper 2. The mixing unit 3 is constituted so as to have a pair of front and rear mixed rotary shafts 31, is provided with uneven paddles 32 every 90 degrees in the outer circumference, and makes the front and rear paddles 32 rotate in a reverse direction. Then, the fertilizer in a central portion is lifted. Also, the spreading unit 4 is provided at a lower part of a gap in a rotation range of the mixing unit 3, and thereby the pressure of the fertilizer applied on the spreading unit 4 is reduced, and the fertilizer is made to continuously drop by using spreading wings 42.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】ホッパーに投入された肥料を均一に混合させるとともに、開口部から均一に肥料を落下させる。【解決手段】走行方向に対して横長形状をなすホッパー２と、ホッパー２内の上方側に設けられ、ホッパー２内の肥料を混合させる混合部３と、ホッパー２内の下方側に設けられる散布部４を分離する。混合部３は、前後一対の混合回転軸３１を有するように構成し、その外周に９０度毎に段違いパドル３２を設け、前後のパドル３２を逆方向に回転させる。そして、中央部分の肥料を持ち上げるようにする。また、散布部４を、混合部３の回転領域の隙間下方に設けることで、散布部４にかかる肥料の圧力を低減させるとともに、散布はね４２を用いて連続的に肥料を落下させる。【選択図】図１
