【Objective】This study investigated the effect of three different plant growth regulators including Promalin,KT-30 and Chouzhibao on the growth characteristics and branching of apple seedlings to provide basis for development of branching promoting technology.【Method】Seedlings of‘Nagafu No.2',‘T337',and‘Bredia rotundifolia Y.C.Liu et C.H.Ou'with the height of 90 cm were sprayed with promalin(1 000 mg/kg),KT-30(100 mg/kg),and Chouzhibao cream(150-200 buds per gram)at 70 cm new tip.The differences in number of...