近年来,随着人们生活水平的提高,不仅对花卉的需求量愈来愈大,而且要求做到周年供应。笔者认为:世界花卉市场竞争的焦点,从某种意义上讲就在于能否做到周年均衡供应。菊花乃四大切花之一,又是我国传统名花,无论海内、外均受人喜欢,尤其是菊花的鲜切花更是市场上的畅销货,因此,有必要探索菊花的周年开花问题。尽管菊花有夏、秋菊之分,然而其多数为短日照植物,花期多在10～1月,那么,怎样做到周年开花呢?首先应明确其理论依据,再采取相应的措施,就能达到周年开花的目的。 In recent years, as people’s living standards improve, not only the demand for flowers is getting bigger, but also the annual supply is required. I think: the focus of competition in the world flower market, in a sense, lies in the ability to achieve an annual supply of balanced. Chrysanthemum is one of the four major cut flowers, but also the traditional Chinese flowers, both at home and abroad are liked, especially the cut flowers of chrysanthemum is the best-selling market, therefore, it is necessary to explore the chrysanthemum anniversary blossom. Although the chrysanthemum has Xia, Qiu Ju points, but most of them are short-day plants, the flowering in the 10 to January, then, how to do the annual flowering? First of all should be clear its theoretical basis, and then take appropriate measures to be able to To the anniversary of the purpose of flowering.