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一、绪论及研究目的树种的“冬性”与“春性”的分析,是可以依据树木发育温期阶段的分析研究来确定的。农作物由于在温期发育阶段中,对于温度条件的要求不同而有冬种作物与春种作物之分。树木在温期发育过程中的阶段性亦已经为一些科学研究者们所证实了。苏联学者薛尔盖也夫(Л.И.Сергеев 1950)及А.С.雅勃洛柯夫(А.С.Яблоков 1950)根据李森科的植物阶段发育理论及树木的特点认为多年生乔木树种的阶段发育的特点是具有两个发育周期的,一个是“总的发育周期”包括它们由种子到结成种子和死亡为止的整个发育过程:另一个是“年发育周期”[古里萨什维里(В.З.Гулисаивили 1954)则称之为小发育周
I. INTRODUCTION AND RESEARCH Purpose The analysis of “winteriness” and “springness” of tree species is based on the analysis of the warm-season stages of tree development. Crops due to the stage of development in the temperature, the temperature requirements for the different varieties of winter crops and spring crops. The staging of trees during the warm-up period has also been confirmed by some scientific researchers. According to the theory of plant stage development of Lysenko and the characteristics of trees, the Soviet scholar Hildegiev (Л.И.Сергеев 1950) and А.С. Yabolov (1950) considered the stage of perennial tree species Development is characterized by two developmental cycles, one is the “total developmental cycle” which includes their entire development from seed to seed and death; the other is the “annual developmental cycle” [Guristasvili В.З.Гулисаивили 1954) is called the small developmental weeks