The present invention relates to a method for improving rice seed germination comprising a step of treating the rice seed with iron powder and a compound represented by the formula (1).According to this method, the germination of rice seed is improved. [wherein, R1 and R2 may be same or different, represent hydrogen atom, methyl group or ethyl group, or R1 and R2 are to combine to form a two-valent group represented by CH2OCH2.]本發明是關於一種促進稻種子發芽方法，其特徵係包含以鐵粉及式(1)表示的化合物處理稻種子的步驟。(式中，R1及R2是相同或不相同，表示氫原子、甲基或乙基，或，R1與R2鍵結成為以CH2OCH2表示的二價基)。依據本發明可促進稻種子的發芽。
