菊花高洁隽逸,傲寒凌霜,而形质廉美,历来为我国人民喜爱。为了使菊花能够更长时间装点我们的生活,现浅谈菊花的控花技术。一、植物的光照条件和菊花的开花习性在自然界中,任何植物都必须通过光照阶段才能开花,菊花也是如此,由于一年四季变化,昼夜长短不同,因此有了花期的季节性变化。春天和夏天日照时间较长,每天日照时间在12个小时以上,称为长日照;秋天和冬天每天日照时间在12个小时以下,称为短日照。在大自然中,许多植物开花时间和能否开花均受光照的影响,而有的植物却不受长短日照的影响。在正常的日照条件下就能开花的植物称为终日照植物。在长日照条件下能够开花的植物 Chrysanthemum Junjie Jun, proud of cold Ling cream, and the shape of the United States has always been the favorite of our people. In order for chrysanthemum to decorate our life for a longer time, we now talk about chrysanthemum flower control technology. First, the plant’s lighting conditions and the flowering habits of chrysanthemum In nature, any plant must pass through the light stage to flowering, chrysanthemum as well, because of changes in the seasons throughout the year, diurnal length varies, so with the seasonal changes in flowering. Spring and summer sunshine time longer daily sunshine time in more than 12 hours, known as the long sunshine; autumn and winter sunshine every day for 12 hours or less, known as short sunshine. In nature, many plants are affected by the light flowering time and flowering, and some plants are not affected by the length of the sun. Plants that bloom under normal sunshine conditions are called end plants. Plants that bloom under long daylight conditions