四季有序,花开有时。许多有花植物的开花都有明显的季节性。这是植物在长期演化过程中形成的一种特性,是对外界环境长期适应的结果。但如果掌握了植物的生长发育规律,根据植物的生长状况和当时的气候条件,通过控制温度、光照、药剂处理以及修剪、施肥等手段,就可以促进或延迟植 Four seasons, flowers sometimes. Many flowering plants have obvious seasonal flowering. This is a characteristic that plants form during long-term evolution and is the result of long-term adaptation to the external environment. However, if we grasp the law of plant growth and development, we can promote or delay plant growth by controlling the growth of plants and the prevailing climatic conditions by controlling the temperature, light, chemical treatment, pruning and fertilization