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在寒冷的冬季,许多喜温花卉早已被请进温室。一些较耐寒的草花,通常在一般的塑料大棚中能够越冬。但当气温突降时,如没有采取必要的应急措施,往往会受到低温伤害。轻则植株部分受冻,延误花期,重则全部死亡,造成很大的经济损失。笔者在上海教大公司工作的几年里,就发生过勋章花、蓝雏菊、南非万寿菊及金鱼草等花卉所受不同程度的低温伤害,目睹了它们的症状表现,由于采取了相应的应急措施,令受害程度减到最低。
In the cold winter, many hi-temperature flowers have long been invited into the greenhouse. Some of the more cold-tolerant grass flowers, usually overwintering in general plastic sheds. However, when the temperature drops suddenly, if it fails to take the necessary emergency measures, it will often suffer from cold damage. In the case of plant part of the cold, delaying flowering, heavy all died, resulting in great economic losses. The author taught a large company in Shanghai in the past few years, there have been medal flowers, blue daisy, South African marigold and snapdragon and other flowers suffered different degrees of cold damage, witnessed their symptoms, due to take the appropriate emergency Measures to minimize victimization.