以物候型不同的茶树品种为材料 ,利用 HPL C法测定新梢生育过程内源激素水平的季节变化。结果表明 ,茶树新梢生育过程中 ,GA3 和 Zeatin含量先升后降 ,IAA含量春夏秋三季生育初期较高 ,随后下降 ,生长加速 ,但夏梢逼近成熟形成对夹时含量回升 ,ABA含量春夏梢随展叶数增加而下降 ,秋梢反之 ,逐渐上升 ;低 ABA/ GA3 和 ABA/ zeatin比值是茶树新梢生长的必要条件 ;新梢生长速率与内源 zeatin含量呈显著正相关 The tea varieties with different phenological types were used as materials to determine the seasonal changes of endogenous hormones during the growth of shoots by HPL C method. The results showed that the contents of GA3 and Zeatin increased first and then decreased during the growth of tea shoots. The content of IAA was higher at the beginning of spring, summer and autumn, then decreased and the growth accelerated. However, the content of ABA increased The ratio of ABA / GA3 and ABA / zeatin was the necessary condition for the growth of tea shoots. The growth rate of shoots was positively correlated with the content of endogenous zeatin