#I made a creation in the headline # temperature is an important condition for the growth and development of flowers, the growth and development of various flowers and dormancy require a certain temperature, different kinds of flowers due to the climate of the place of origin is different

#I am in the headlines to create # temperature is an important condition for the growth and development of flowers, the growth and development of various flowers and dormancy require a certain temperature, different types of flowers due to the climate of the place of origin is different, the temperature requirements are also different. If the maximum temperature is exceeded or below the minimum temperature limit, the normal growth and development of flowers will be impaired, and even lead to death. For example, when flowers native to the south are introduced to the north for cultivation, if the winter temperature is lower than the origin, there will be cold damage or frost damage; on the contrary, flowers native to the north that prefer a cold and cool climate, if the winter temperature is too high, can not fully sleep and empty nutrients, which will affect the growth and flowering of the second year. In order to facilitate cultivation management, people usually divide them into the following three categories according to the temperature requirements of common flowers: (1) hardy flowers: native temperate zone and sub-cold zone, can tolerate low temperatures of about minus 20 ° C, and can overwinter in the open field in north China and southern northeast China. Such as jade hairpin, grass, lilac, yingchun, begonia, shandan, lily, wild rose, rose, elm plum, wisteria, hibiscus, dragon cypress and so on. (2) Semi-hardy flowers: native to temperate or warm temperate zones, can withstand low temperatures of about -5 ° C, and can overwinter in the Yangtze River Basin. In North China, Northwest China and Northeast China, some need to bury the soil to prevent wintering, some need to cover grass to protect overwintering, and some need to overwinter in a greenhouse with a minimum temperature of not less than 0 ° C, such as chrysanthemums, peonies, tulips, moon seasons, pomegranates, etc.

(3) Hardy flowers: native to tropical and subtropical regions. Sex likes high temperature, in South China and southwest parts of the can be exposed overwintering, other areas are needed to overwinter in the greenhouse, so called greenhouse flowers, such as Wenzhu, a leaf orchid, a poinsettia, leafy wood, Crane orchid, calla lily, Fusang, white orchid and succulents. #2020 Vitality Conference # @Toutiao Group #2021生机大会 #