PROBLEM TO BE SOLVED: To provide a method for promoting the reduction of the amount of carbon dioxide discharged from facilities by a company.SOLUTION: This method for promoting the reduction of the amount of carbon dioxide includes supplying carbon dioxide generated in facilities 1 to a cultivation greenhouse 2 for cultivating sales object plants 2a, and letting the sales object plants 2a in the cultivation greenhouse 2 absorb the carbon dioxide so as to decrease carbon dioxide discharged from the facilities 1 and increase the growth speed of the sales object plants 2a.COPYRIGHT: (C)2011,JPO&INPIT【課題】事業者による施設から排出される二酸化炭素の削減を促進する。【解決手段】販売対象植物2aを栽培する栽培ハウス2に施設1で発生した二酸化炭素を供給し、その二酸化炭素を栽培ハウス2内の販売対象植物2aに吸収させることで施設1から排出される二酸化炭素を削減し且つ販売対象植物2aの育成速度を増加させる。【選択図】図1