早春常见到有些花木还未长叶就鲜花满枝了,如榆叶梅、连翘紫荆、玉兰、腊梅、迎春花等。原因是这些树木的花芽在前一年夏季后就逐渐形成,经过夏署,秋凉和冬寒,促进了花芽的内部分化,具备了开花内因,当温度合适就破绽怒放。由于叶芽要求的温度比花芽高,所以花就先开放了。了解先花后叶的特点,在生产上应注意水肥管理,即在开花前浇水,开花后多施些肥和多浇些水,同时加强除虫、整枝等,以促进花芽的形成,使花朵开放的更多、更大、更鲜艳。 Early spring common to some flowers have not yet leaves on the full branches of flowers, such as elm leaf plum, Forsythia Bauhinia, Magnolia, bloom, Yingchun and so on. The reason is that the flower buds of these trees gradually formed after the summer of the previous year. After the summer months, the cool autumn and winter winters promote the internal differentiation of the flower buds and have the internal inflorescence of flowers, which bloom when the temperature is right. As the leaf bud requires a higher temperature than flower buds, the flower is first opened. Understand the characteristics of the first leaf after the flower, fertilizer and fertilizer should pay attention to the management of production, that is, before the flowering, after flowering more fertilizer and more poured some water, while strengthening insects, pruning, etc., in order to promote the formation of flower buds so that Flowers open more, bigger and more bright.