PBO 是一种新型果树叶面肥(原名新型果实促控剂),应用广泛。按资料介绍,其主要成份有细胞分裂素(又名促花激素)、生长衍生物、坐果剂、增糖着色剂、早熟剂、膨大剂、光亮洁净剂、杀菌剂等,可以壮树、控梢、促花、提高受精功能,使坐果率高,促进果实膨大、增糖、增色、促早熟等。我在2005首次使用,解决了柑桔类在北方盆栽开花难、柿树果实偏小、植株控梢难等问题。 PBO is a new fruit foliar fertilizer (formerly known as a new fruit promoter), widely used. According to the information, its main components are cytokinin (also known as pro-flower hormone), growth derivatives, fruit set, sugar coloring agent, premature agent, swelling agents, bright cleaners, fungicides, Tips, promote flowers, improve fertilization, so that high fruit set, to promote fruit enlargement, increased sugar, color, promote precocious. I first used in 2005 to solve the citrus species in the northern potted flowers difficult, persimmon fruit is too small, difficult to control plant problems such as hair.