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林业科学 ›› 1997, Vol. 33 ›› Issue (3): 267-273.

• 研究简报 • 上一篇    下一篇

银杏叶生长发育规律了研究

邢世岩,孙霞,李可贵,有祥亮   

  1. 山东省林业学校林木栽培室 泰安 271000
  • 收稿日期:1995-12-05 出版日期:1997-05-25 发布日期:1997-05-25

GROWTH AND DEVELOPMENT OF GINKGO BILOBA LEAVES

Shiyan Xing,Xia Sun,Kegui Li,Xiangliang You   

  1. Forestry School of Shandong Province Taian 271000
  • Received:1995-12-05 Online:1997-05-25 Published:1997-05-25

关键词: 银杏, 叶, 生长发育, 叶面积系数

Abstract:

The morphologic feature, growth and development, leaf screen and leaf biomass of four Ginkgo caltivars in China were studied in this paper, which were Kuijin, Mating 5#, Jiafushou and Dongtinghuang.Leaves of Ginkgo are categorized:fan shape.semicircle shape and the heart shape.The heterophylly of Ginkgo is related with age of shoots and location of leaves growth.The phyllotaxis of cutivars are proved to be 3/8.The annual dynamic change in leaf length, leaf width, petide length, leaf area, dry and fresh weight of leaf can be expressed。"S"-shaped curves.Water content in leaves sharply declines as the leaves growth period prolongs.Length of long shoot is 583cm, numbers of leaves are 402, leaf area is 9735cm2, fresh weight of leaves is 355g, leaf area index is 2.58 for a 3-year-old young grafted tree.

Key words: Ginkgo, Leaf, Growth and development, Leaf area index