历来都认为植物的冻害全是低温造成的。因此人们一般从仲秋开始就采取停氮追磷钾和扣水增光等措施,以增加植物的抗寒能力,并在寒潮来临前,就把植物移进室内或地窖;无法移动的,就穿衣戴罩、覆盖稻草和塑料薄膜或者就地架设简易温棚。但虽百般努力,冻害还是难以避免,尤其是简易温棚里的草本花卉和原产于热 It has always been thought that frost damage to plants is caused by low temperatures. Therefore, people usually take the measures of restoring nitrogen and chasing phosphorus and watering and adding light to restrain the plants from the beginning of autumn, so as to increase the cold resistance ability of plants and move the plants into the indoor or cellar before the cold wave comes; Wearing a cover, covering straw and plastic film or simple erection of greenhouses. However, despite all efforts, frost damage is still unavoidable, especially in the simple greenhouse of herbs and flowers native to heat