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人们往往根据花卉植物生长发育达到一定生理状态后,遇到适宜的外界环境条件才能开花这一原理,通过人为地改变或创造某些环境条件以及采取一些特殊的栽培措施,使花卉按照人们的意愿提前或延期开放。花期控制的主要技术措施有控制光照、改变温度、应用生长调节物质、控制水肥、改变播种期以及修剪等,现分述如下。1.控制光照。各类花卉花芽分化需要的日照不同。按照花芽分化对日照的要求可分为短日照花卉(如菊花、一品红、叶子
People often reach the certain physiological state according to the growth and development of flowers and plants, and encounter the appropriate external environmental conditions to bloom. This principle can be changed by artificially changing or creating certain environmental conditions and adopting some special cultivation measures to make the flowers as they wish Open in advance or postponed Flowering control of the main technical measures are controlled light, change the temperature, the application of growth regulating substances, control of water and fertilizer, change the sowing period and pruning, are as follows. 1. Control lighting. Different types of flower bud differentiation requires different sunshine. In accordance with the requirements of flower bud differentiation sunshine can be divided into short sunshine flowers (such as chrysanthemum, poinsettia, leaves