PROBLEM TO BE SOLVED: To provide methods for growing gramineous plants which can significantly improve the growth amount and germination amount of gramineous plants.SOLUTION: The present invention provides a method of growing gramineous plants comprising an oxidation step of oxidizing iron ore deposit mineral water which includes divalent iron to form precipitation with oxidation treated liquid； a neutralization step of neutralizing the oxidation treated liquid to obtain a neutralization treated liquid and an iron rich precipitate； a mixing step of mixing the iron rich precipitate with soil to obtain an iron rich precipitate-containing soil； and a growth step of growing gramineous plants using the iron rich precipitate-containing soil.SELECTED DRAWING: Figure 1【課題】イネ科植物の生育量および発芽量を著しく向上させることができるイネ科植物の生育方法の提供。【解決手段】２価鉄を含む鉄鉱床鉱水を酸化して酸化処理後液と沈殿を形成させる酸化工程と、前記酸化処理後液を中和して中和処理後液と鉄分富有殿物を得る中和工程と、前記鉄分富有殿物を土壌と混合し、鉄分富有殿物含有土壌を得る混合工程と、前記鉄分富有殿物含有土壌を用いてイネ科植物を生育する生育工程と、を含むイネ科植物の生育方法である。【選択図】図１
