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本文从个体生长发育角度出发,分析了甜菜根重、蔗糖含量与各生育阶段的冠层因子间的关系。在筛选出的影响根重、含糖较大的因子中,亩产2.5t时的冠层主要性状指标为:幼苗期叶丛高度为21.4～23.1cm,最大叶片叶面积为121.5～137.8cm~2;叶丛快速生长期的鲜叶数为16.3～17.8片,最大叶片叶面积为389.3～446.4cm~2;块根糖分增长期的鲜叶数为18.4～20.3片,最大叶片的叶面积为254.5～290.6cm~2;糖分积累期的鲜叶数为17.7～19.8片,叶丛高为44.2～48.4cm。
Based on the individual growth and development, this paper analyzed the relationship between the weight of beetroots and sucrose content and the canopy factors in different growth stages. Among the factors that had a strong influence on root weight and sugar content, the main characters of canopy at 2.5t per mu were as follows: leaf height at seedling stage was 21.4 ~ 23.1cm, leaf area at maximum was 121.5 ~ 137.8cm ~ 2; the leaf number of fresh leaves at the rapid growth stage was 16.3 ~ 17.8, the maximum leaf area was 389.3 ~ 446.4cm ~ 2; the number of fresh leaves in the sugar growing stage was 18.4 ~ 20.3, the leaf area of the largest leaf was 254.5 ~ 290.6cm ~ 2; The fresh leaf number of sugar accumulation period was 17.7 ~ 19.8, leaf height was 44.2 ~ 48.4cm.