中原地区菊花(秋菊)大多数品种及类型,在常规栽培条件下,一年开花一次,花期多集中在10月中下旬—11月。为使更多的观赏型菊花在国庆节开花乃至更早时间上市,需采用相应的栽培管理技术措施,促进花芽提前分化,以达到提前开花的目的。理论依据菊花属典型的短日照植物,其自然开花期 Central China region chrysanthemum (Chrysanthemum) most varieties and types, under conventional cultivation conditions, flowering once a year, flowering and more concentrated in the mid to late October - November. In order to make more ornamental chrysanthemum blossom in the National Day or even earlier time to market, the need to adopt the appropriate cultivation and management techniques to promote early differentiation of flower buds in order to achieve the purpose of early flowering. Theoretical basis Chrysanthemum is a typical short-day plants, its natural flowering period