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林业科学 ›› 1995, Vol. 31 ›› Issue (2): 103-109.

• 论文及研究报告 • 上一篇    下一篇

马尾松净光合速率初步研究*

何纪星,朱守谦,甘月红   

  1. 贵州农学院林学系 贵阳 550025
  • 收稿日期:1993-12-26 出版日期:1995-03-25 发布日期:1995-03-25

A PRELIMINARY STUDY ON THE NET PHOTOSYNTHESIS OF MASSON'S PINE

Jixing He,Shouqian Zhu,Yuehong Gan   

  1. Guizhou Agricultural College Guiyang 550025
  • Received:1993-12-26 Online:1995-03-25 Published:1995-03-25

摘要:

本文研究了马尾松一年生苗的鳞叶及幼树1、2年生针叶的月龄与净光合速率的变化规律; 马尾松天然更新树团的生境,生产结构,净光合速率及净生产力的变化。进一步论述了马尾松的光合生态特性, 并据此对马尾松育苗,培育过程中抚育管理措施制订及实施的最佳时段进行了论证。

关键词: 马尾松, 叶龄, 净光合速率

Abstract:

This paper mainly deals with the changes of the rate of net photosynthesis (Pn) which varied with leaf age, including primordial leaf of seedlings and 1 or 2-year-old needles of young trees of Pinus massoniana. The habitat, productive structure and the variation of net photosynthesis and net primary productivity were also studied of the groves which were formed by natural regeneration. The research results showed that peak value of Pn occurred during July for primordial leaves and the rate of Pn varied in a biparabolic curve for 1 or 2-year-old needles. In order to improve the net primary productivity of the natural stands of this species, the productive structure of the groves should be properly controlled.

Key words: Masson's pine, Leaf age, Net photosynthetic rate