PROBLEM TO BE SOLVED: To prevent dusts from scattering and working environment from deterioration during reaping work.SOLUTION: This combine harvester is provided by having an auger frame 11 equipped with left and right side walls 6, a bottom plate 9 and a rear plate 10, and a reaping part 5 equipped with a reel 12, a reaping blade 13 and an auger 8, mounting a low crop unit 35 installed with plural units 38 installed with a raising and conveying device 37 and a reaping blade 41 at the rear direction of a left and right pair of grass-dividing body 36 in left and right direction as a row, at the auger flame 11 removed with the reel 12 as freely demountable and making a constitution of a reel-mounting arm 25 removed with the reel 12, as capable of mounting a transparent sheet member 45 covering the upper direction of the above low crop unit 35 as freely demountable.COPYRIGHT: (C)2009,JPO&INPIT【課題】刈取作業中の塵埃の飛散、作業環境の悪化。【解決手段】コンバインは、左右側壁6と底板9と後板10を備えたオーガーフレーム11と、リール12と刈刃13とオーガー8を備えた刈取部5とを有する。リール12を外したオーガーフレーム11には、左右一対の分草体36の後方に引起搬送装置37および刈刃41を設けたユニット38を左右方向に複数並設したロークロップユニット35を着脱自在に取付け、前記リール12を外したリール取付アーム25には前記ロークロップユニット35の上方を覆う透明シート部材45を着脱自在に装着可能な構成とする。【選択図】図5