茶树梢中GA3和ABA含量在越冬期间最高 ,随着春梢萌发生长而下降 ;IAA、ZT含量则在越冬期间最低 ,春梢萌发初期含量迅速上升 ,此后上升缓慢或略有下降。GA3/ABA、IAA/ABA在越冬期最低 ,随春梢萌动生长而上升。在茶树根系活动微弱时 ,ZT/IAA值高 ,随根系活动旺盛逐渐下降。GA3/ZT在越冬期间大 ,春梢萌动初期锐降。 The contents of GA3 and ABA in tea treetops were the highest during the winter and decreased with the germination and growth of spring shoots. The content of IAA and ZT was the lowest during the winter and the content of IAA increased rapidly or slightly afterwards. GA3 / ABA and IAA / ABA were the lowest in the winter and increased with the shoot growth. ZT / IAA was high when the activities of tea tree roots were weak, and gradually decreased with the vigor of roots. GA3 / ZT during the winter, spring shoots early sharp decline.