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菊花喜冷凉湿润的气候,故其开花时间的长短主要取决于温度的高低。在一般室温下,它2～3周就开始凋落。而如采取措施降低温度,花期便可延长。笔者的做法是:将11月初开放的菊花,放在室外地窖(阳畦)内,窖深1米左右,上覆塑料薄膜,天寒后再加盖一层草帘。白天打开草帘见光5～6小时,并掀开塑料薄膜一角通风,让窖温白天保持在5～7℃左右,夜间为2～3℃,空气湿度在80～90％,这样就可延长花期至2月中旬,开花时间达3个多月,且
Chrysanthemum hi humid climate, so the length of its flowering time depends mainly on the level of temperature. At normal room temperature, it begins to fall out in 2 to 3 weeks. If measures are taken to reduce the temperature, the flowering period can be extended. The author’s approach is: the early November opening of the chrysanthemum, outdoor cellar (Yang 畦), about 1 m deep cellar, covered with plastic film, and then covered with a layer of straw curtain. Open the grass curtain during the day to see the light 5 to 6 hours, and opened the corner of the plastic film ventilation, so pit temperature during the day to maintain at about 5 ~ 7 ℃, 2 ~ 3 ℃ at night, air humidity 80 ~ 90%, so you can extend Flowering to mid-February, flowering time of more than 3 months, and