多效唑是一种新型的植物生长延缓剂,英文缩写为PP_(333)。在桃树上科学使用多效唑会产生如下效应:①控制新梢生长,节间缩短,使树体矮化紧凑;改善光照条件,使枝条充实,树体健壮。②成花数量增加,提高花芽质量,使花芽着生节位降低,产量提 Paclobutrazol is a new plant growth retarding agent, abbreviated as PP_ (333). The scientific use of paclobutrazol in peach trees will produce the following effects: ① control the growth of new shoots and shorten the internode, making the tree dwarf compact; improve the lighting conditions, make the branches full and the tree robust. ② increase the number of flowers, improve the quality of flower buds, flower buds to reduce the births, yield mention