不同品种杜鹃花的叶和花,生长发育习性对环境温度的要求也不相同。大部分早开品种,在低温环境越冬即先开花、后长叶,这是因为花朵发育对温度的要求低于叶片生长对温度的要求,因此花后随温度上升而叶芽大量萌发。中开品种在中温环境下花与叶齐发。晚开品种则是先长叶后开花。家庭莳养早开品种杜鹃花,冬季室内温度(北 Different varieties of rhododendron leaves and flowers, growth and development habits of the ambient temperature requirements are not the same. Most of the early open varieties, in the cold environment that is the beginning of winter flowering, long after the leaf, which is because the development of flowers on the temperature requirements lower than the temperature of leaf growth requirements, so after the flower temperature with the buds and a large number of germination. In the open varieties of flowers in the environment and leaves Qi hair. Late open varieties are the first leaf after flowering. Families raising early varieties of azaleas, winter indoor temperature (North