70年代以来,国内外在果树上应用植物生长调节剂进行了不少试验。试验结果表明,多效唑采取叶面喷施或土壤施入,对新梢生长均有抑制作用,并可促进花芽形成,提高产量;赤霉素花期喷施能防止落花落果,提高座果率、增加单果重。但由于树种、品种使用方法不同,其效果也有明显差异。 Since the 1970s, many experiments have been conducted on the application of plant growth regulators in fruit trees at home and abroad. The results showed that paclobutrazol foliar application or soil application, the growth inhibition of shoots, and can promote the formation of flower buds and increase yield; gibberellin spray can prevent the flowering and decrambling, improve fruit set, increase Fruit weight. However, due to tree species, different varieties of use, the effect is also significantly different.