A composition comprising an effective amount of GA4/7 (gibberellin 4 and gibberellin 7) or GA3 (gibberellic aeid) and 6BA (benzyladenine) is used as a seed treatment on sweet and field corn (Zea mays) to accelerate plant establishment and to promote low temperature germination and emergence.本發明係有關一種包含有效量GA4/7(赤黴素4及赤黴素7)或GA3(赤黴酸)及6BA(苄基腺嘌呤)之組合物,其係用作甜玉米及普通玉米(玉蜀黍(Zea mays))之種子處理劑,以加速植株齊苗及改良低溫萌芽及出苗。