However, 89 treatments had significant effects on retarding the new shoot growth of peony. Spring application of 6-BA increased the flower diameter of peony, and 6-BA at 200mg/L applied delayed flowering of peony significantly.

• 春季6-BA处理增大了花朵直径，其中高浓度6-BA(200mg/L)有延迟花期的作用，但6-BA与GA_3混合处理对叶片和花色有不良影响，使叶片产生褐色斑纹，花色变淡。