To correct mushrooms so as to grow as far as possible from the opening of the cultivation bottle so as to obtain a uniform length mushrooms by cutting stone piercing portions.A shoulder portion 53 that narrows inward as the upper end portion of the body portion 51 is directed upwardly, a shoulder portion 53 that is protruded upward from the upper end of the shoulder portion 53, And a columnar neck portion 52 having an opening area smaller than the cross sectional area of the plurality of cultivating bins 50 having a plurality of rows in the lateral direction and a plurality of rows in the longitudinal direction, , Which is placed on the shoulder portion 53 and which is rectangular in plan view and which is located on the shoulder portion 53 from the midway position of the shoulder portion 53 to the neck portion 52 , And each of the frame side surface portions 20 is formed so that the upper edge 21 thereof is positioned more outward than the lower edge 22 of the frame side surface portion 20 .(FIG.【課題】きのこの栽培の過程で、栽培ビンの開口からできるだけ上方へ生育するよう矯正することで、石突き部分の切断により均一な長さのきのこを得るようにする。【解決手段】有底柱状の胴部51と、前記胴部51の上端部分が上方に向かうにつれて内方へ狭窄する肩部53と、前記肩部53の上端から上方に突出するとともに前記胴部51の断面積より開口面積が小さい柱状の頸部52と、を有する同一形状の複数本の栽培ビン50が横方向に複数列かつ縦方向に複数行の方形に配列された状態においてその最外周に並ぶ前記頸部52の外側を取り囲み、かつ、前記肩部53の上に載置される平面視で方形のきのこ栽培補助枠10であって、前記肩部53の中途位置から前記頸部52の上端を超える位置までの均一な高さの枠側面部20を4つ有するとともに、前記枠側面部20の各々は、当該枠側面部20の下縁22より上縁21が外側に位置するように傾いている。【選択図】図8
