苹果施用多效唑过量造成树体抑制过重,叶面积减小,果柄变短,座果率及单果重降低,树势衰弱;在花序分离期(4月4日)和幼果期(5月30日),连续两次喷施250mg/L的赤霉素,使苹果的叶面积、座果率及单株产量达到或超过正常生长结果水平,可促进枝条生长、复壮树势。 Apple paclobutrazol overdose caused tree suppression overweight, reduced leaf area, fruit stalk shorter, fruit set rate and fruit weight decreased, tree weakness; in the inflorescence separation period (April 4) and young fruit period (May 30 days), two consecutive spraying 250mg / L of gibberellin, the apple leaf area, fruit set rate and per plant yield reached or exceeded the level of normal growth results, can promote the growth of branches, rejuvenation of the tree.