研究结果表明,马铃薯块茎形成期,脱落酸含量显著增加,赤霉素含量则显著降低,赤霉素与脱落酸比值下降到一定水平是块茎开始形成的重要条件.外加脱落酸喷施叶面,使块茎形成提早,但结薯数并未增加;外加赤霉素喷施叶面,使植株细高,匍匐茎细长,块茎形成显著延迟,块茎数显著减少,这一结果进一步证明了脱落酸和赤霉素在块茎形成中的作用. The results showed that the content of abscisic acid and gibberellin in potato tubers increased significantly during tuber formation, while the ratio of gibberellins to abscisic acid decreased to a certain level, So that the formation of tubers earlier, but the tuber number did not increase; plus gibberellin spraying foliar, plant height, stolons slender, tuber formation was significantly delayed, significantly reduced tuber number, the results further evidence of the abscisic acid and The Role of Gibberellins in Tuber Formation.