PROBLEM TO BE SOLVED: To provide a fertilizer-feeding device of a fertilizer spreader, in which feeding holes opened in the bottom plate portion of a fertilizer hopper are formed in a transverse convex-like shape to accurately spread a powdery or granular fertilizer, and which can discharge a fully ripened organic fertilizer in a sufficient feeding rate without clogging the tip side narrow portions of transverse convex-like feeding holes and without lowering a fertilizer feeding work speed from the feeding holes, when the fully ripened organic fertilizer is spread.SOLUTION: The lateral direction opening width in a base end side large width portion of each of transverse convex-like shape feeding holes formed in a bottom plate portion approximately corresponds to each of the lateral direction opening widths of rectangular hole-like shutter holes disposed in the shutter plate, and the longitudinal direction opening width corresponds to each of the longitudinal direction opening widths of the shutter holes. A tip end side small width portion has a small width formed by narrowing the longitudinal opening width from the approximately longitudinal central portion of the large width portion, and is formed in the bottom plate in a shape projected in an about half length on the basis of the lateral opening width of the shutter hole.COPYRIGHT: (C)2011,JPO&INPIT【課題】粉状・粒状の肥料を精度よく散布し得るようにするため、肥料ホッパの底板部に、開設する繰出穴を、横向きの凸字状の形状に形成している肥料散布機の肥料の繰出装置を、完熟有機肥料を散布する際に、この横向き凸字状の繰出穴の先端側の細巾部に目詰りを生ぜしめず、かつ、繰出穴からの肥料の繰り出しを、作業速度の低下をきたさない充分な繰出量で排出させ得るように構成する。【解決手段】底板部分に形設する横向き凸字形の繰出穴を、それの基端側の拡巾部にあっては、左右方向の開口巾がシャッタ板に設ける角穴状のシャッタ穴の左右方向の開口巾に略対応し、前後方向の開口巾がシャッタ穴の前後方向の開口巾に略対応する形態とし、先端側の細巾部にあっては、前記拡巾部の前後の略中央部位から、前後の開口巾を狭くした細い巾で、シャッタ穴の左右の開口巾の略半分の長さに突出する形態に形成して底板に開設する。【選択図】図7
