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自然情况下,牡丹为春季开花植物,黄河流域正常花期为4月下旬。为了弥补牡丹花期短、花期集中的缺陷,需要利用温室或塑料大棚等加温措施,采用促成栽培技术使牡丹按人们的意愿,一年中几次欣赏到国色天香、艳丽多姿的牡丹风彩。促成栽培就是人为地创造适宜植物开花、生长的条件,使植物提前开花的栽培措施,俗称“催花”。
Under natural conditions, the peony is a spring flowering plant, and the normal flowering season in the Yellow River Basin is late April. In order to make up for the short flowering period of peonies and the shortcomings of concentrated flowering periods, it is necessary to use greenhouses or plastic greenhouses and other heating measures to promote peony cultivation according to people’s wishes. Several times a year, color. Forced cultivation is artificially created suitable for plant flowering, growth conditions, so that plants in advance of flowering cultivation measures, commonly known as “reminder flowers.”