每种花卉什么时候开花,能开多长时间,都有一定的规律,这就是自然花期。随着人民文化生活水平的提高和花卉业的发展,市场要求能四季均衡地供应鲜花,若用常规的方法栽培花卉,按自然花期供花是远远不够的。因此,需要用人为的方法,使花卉按照人的意志开放。这项技术在花卉栽培学上 When the flowering of each flower, how long it can be open, there is a certain law, this is the natural flowering. With the improvement of the people’s cultural life and the development of the flower industry, the market demands that flowers be supplied in all four seasons. If flowers are cultivated in a conventional manner, it is not enough to provide flowers by natural flowering. Therefore, we need to use man-made methods to make flowers open to the will of human beings. This technique is in flower cultivation