The reduction of GA3 was more than that of IAA.The endogeneous ZT contents in leaf blade and sheath and endogeneous ABA content in the whole plant increased.

• ZT含量则是地上部提高，根中下降，ABA含量提高，植株各器官中(IAA+GA 3)/ABA比值均下降，IAA/GA3比值均升高，IAA/ZT 和GA3/ZT比值则是地上部降低，根中升高。