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[目的]控制连翘、迎春的花期,满足晚春木本切花需求。[方法]选取枝条至少在10个花蕾以上的迎春、连翘当年生枝做切枝(20～25cm长)和冷藏(0～2℃)处理,通过低温冷藏延迟迎春和连翘的花期,研究迎春、连翘切枝冷藏延迟开花的技术措施,提高开花质量和效果。[结果]经过冷藏处理,迎春、连翘切枝的开花期延迟了1个月,迎春冷藏1～30d效果比较好,连翘冷藏1～20d效果比较好。迎春花期持续时间长,而连翘开花时间集中。冷藏后的花期曲线大都呈单峰曲线状态。冷藏5～25d的开花效果比较好。[结论]连翘、迎春含苞枝条在0～2℃冷藏5～25d后可以正常开放。
[Objective] To control the flowering period of forsythia and spring and meet the demand of cut wood flower in late spring. [Method] The branches of the forsythia suspensa (20 ~ 25cm long) and cold storage (0 ~ 2 ℃) were selected in the spring with more than 10 buds of branches at each time. The frostbite of Forsythia suspensa and Forsythia suspensa was delayed by cold storage, , Forsythia cold-blooming cuttings blooming technical measures to improve flowering quality and effectiveness. [Result] Flowering stage of Forsythia suspensa was delayed by 1 month after chilling treatment, and the effect of 1 ~ 30 days of spring chilling was relatively good. The effect of forsythia on chilling 1 ~ 20 days was better. Spring perpetual duration of a long time, and forsythia flowering time. Most of the flowering after the flowering curve was unimodal curve. Refrigeration 5 ~ 25d flowering is better. [Conclusion] The forsythia suspensa and Yingchun involucre branches could be normally opened after stored at 0 ~ 2 ℃ for 5 ~ 25d.