PROBLEM TO BE SOLVED: To solve such a problem that pharmaceutical effect can not be sufficiently exerted to seeds, in a case of carrying out operations such as chemical application, fertilizer application in parallel with a seeding operation, as spaces among the seeds and a granular material are brought to be inappropriate depending on characteristics of the granular material and the field condition, when drop-down ports for dropping down the granular material to the field from the feeder of the chemical application apparatus, the fertilizer application apparatus and the like is limited to be supported at only one position.SOLUTION: A drop-down position-adjusting mechanism 90 for freely changing support positions of the drop-down ports 87La, 87Ra is installed by supporting the drop-down ports 87La, 87Ra for dropping down the chemical 42 from chemical delivery devices 4, 5 with support arms 93, 96, and fixing the whole support arms 93, 96 by horizontally moving longitudinally and laterally relative to the main frames 7L, 7R of the seeding machine 1.COPYRIGHT: (C)2013,JPO&INPIT【課題】従来より、施薬・施肥等の作業を播種作業と並行して行う場合、施薬装置・施肥装置等の供給装置から圃場に粒状物を投下する投下口が、一カ所だけに限定して支持されていると、粒状物の特性や圃場の状況によっては、種子と粒状物との間隔が不適切となり、粒状物の薬効等の効果を十分に種子に及ぼせない、という問題があった。【解決手段】薬剤繰出装置4・5からの薬剤42を圃場に投下する投下口87La・87Raを支持アーム93・96によって支持し、該支持アーム93・96全体を、前記播種機1のメインフレーム7L・7Rに対して前後左右へ水平移動して固定することにより、前記投下口87La・87Raの支持位置を自在に変更する投下位置調整機構90を設けた。【選択図】 図6
