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兰花的开花期与温度的关系十分密切。一些论著指出,春兰花芽形成后,要经历一段温度较低的时间(5℃左右),否则就不能开放,这一现象也称为眷化阶段。春兰在我国大多分布在广阔的亚热带丘陵山区,原生地不一,对气候的适应性不可能完全相同,不同开花属性的品种对春化阶段的敏感程度也不尽相同。因此,一些敏感性较弱的早花系列的春兰,不一定非经过5℃左右的低温锻炼,也能顺利开花。本人在栽培春兰的经历中就有这样的体会。
Orchid flowering temperature and the relationship is very close. Some papers pointed out that after the formation of Chunlan flower buds, to go through a period of low temperature (about 5 ℃), otherwise it can not be open, this phenomenon is also known as the stage of affirmative. Chunlan is mostly distributed in the vast subtropical hilly mountains in our country, which are different in origin and adaptability to the climate. The varieties with different flowering properties are not sensitive to the vernalization stage. Therefore, some of the less sensitive early spring series of Chunlan, not necessarily after about 5 ℃ cold exercise, but also smooth flowering. I am in the cultivation of Chunlan experience have this experience.