PROBLEM TO BE SOLVED: To simultaneously carry out furrow making for planting, manuring and soil cover of fertilizer thereof by an apparatus of small-sized and simple structure in a seed potato planter equipped with a furrow-making device for forming furrows on surface soil in field, a fertilizer supply hose for supplying a fertilizer in a fertilizer hopper to the furrows, a seed potato conveyor for dropping seed potatoes one by one in manured furrows and a soil cover plate for covering dropped seed potatoes with soil and burying the furrows with soil.SOLUTION: The furrow-making device 8 attached to the lower part of the seed potato planter adjustably in height is composed of an approximately V-shaped soil discharging plate 8b for pushing field soil to the right and left and forming furrows of fixed depth, a connection pipe 8d connected to the lower end of the fertilizer supply hose 7 and spraying a fertilizer to the furrows from the inside of the soil discharging plate 8b and an extension piece 8c for making a part of the field soil extended and pushed to the right and left rear end of the soil discharging plate 8b climb over to the furrow side and shallowly covering fertilizer A sprayed on the furrow with soil and lower than the soil discharging plate 8b.COPYRIGHT: (C)2010,JPO&INPIT【課題】 畑の表土に溝を形成する作溝器と、その溝に肥料ホッパーの肥料を供給する肥料供給ホースと、施肥した溝に種芋を1個づつ投下する種芋搬送コンベヤと、投下した種芋に覆土して溝を埋め戻す覆土板とを備えた種芋植付機において、植付け用の作溝と施肥とその肥料の覆土を小型で簡単な構造の装置で同時に行えるようにする。【解決手段】 種芋植付機の下部に高さ調整自在に取り付けた作溝器8は、畑土を左右へ押しのけて所定深さの溝を形成する略V字状の排土板8bと、肥料供給ホース7の下端と接続して排土板8bの内側から溝に肥料を散布する接続管8dと、排土板8bの左右後端に延設され押しのけた畑土の一部を溝側へ乗り越えさせて溝に散布された肥料Aを浅く覆土する排土板8bより高さの低い延長片8cとで構成する。【選択図】 図2
