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通过对华北落叶松初级种子园5年的物候观测,编制了年物候周期表。从种子园群体和无性系个体两方面,揭示出华北落叶松年物候周期规律。并分析阐明了物候期与气温和活动积温之间的相关性。还对无性系个体间物候的异同性及雌雄球花的相遇问题作了剖析。本项研究对种子园制订良种生产计划和经营管理具有重要价值。
Through the observation of phenology of the Larix principis-rupprechtifolia seed orchard in North China for five years, the annual phenological cycle table was compiled. From the seed orchard groups and clonal individuals, revealing the Larix principis-rupprechtidae period of phenology. And analyzed and clarified the correlation between phenology and air temperature and active accumulated temperature. Also on the clonal phenological differences between individuals and male and female ball flowers meet the problem was analyzed. This research is of great value to the seed garden in formulating the production plan and operation management of elite seeds.