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早在秋天里,树木植物都作了自我调节,以迎接严冬的来临。落叶树种将叶片的营养向体内转移,把淀粉转化为糖分,与激素、酶、养分等一起贮存起来,并使树液的浓度增高,以降低其结冰点。再则产生了大量的落叶酸,使叶片变黄脱落。由于没有了叶片的蒸腾拉力,树木根部吸收水分的功能逐渐地减少,致使树木逐步进入到休眠的状态。常绿的树木植物在进入冬季时,叶片上的气
As early as autumn, trees and plants have made self-regulation, in order to meet the advent of harsh winter. Deciduous species will leaf nutrition to the body transfer, the starch into sugar, and hormones, enzymes, nutrients stored together, and the sap concentration to reduce its freezing point. Then there is a lot of foliar acid generated, the leaves turn yellow off. Due to the lack of the transpiration tension of the leaves, the function of the roots of the trees to absorb water is gradually reduced, causing the trees to gradually enter the dormant state. Evergreen tree plants enter the winter when the air on the leaves