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应用生态学报 ›› 1995, Vol. 6 ›› Issue (4): 349-354.

• 研究论文 • 上一篇    下一篇

茶树蒸腾特性的研究

陶汉之, 周良骝, 方一平, 程茱萸, 周建军   

  1. 安徽农业大学生物工程系, 合肥 230036
  • 收稿日期:1994-12-14 修回日期:1995-05-08 出版日期:1995-10-25 发布日期:1995-10-25
  • 基金资助:

    安徽省教委基金

Transpiration characteristics of tea tree

Tao Hanzhi, Zhou Liangliu, Fang Yiping, Cheng Zhuyu, Zhou Jianjun   

  1. Anhui Agricultural University, Hefei 230036
  • Received:1994-12-14 Revised:1995-05-08 Online:1995-10-25 Published:1995-10-25

摘要: 茶树蒸腾速率和气孔导度因品种、叶位不同而异。抗旱性强的品种具有低的气孔导度;鱼叶的蒸腾速率和气孔导度接近或高于真叶。茶树叶片蒸腾速率夏、秋季最高,春季次之,冬季最低。在晴天,茶树蒸腾速率和气孔导度的日变化呈单峰型,以中午前后最高;其日变化与光量子通量密度、叶温、蒸汽压亏缺等因子显着相关;光量子通量密度对蒸腾速率和气孔导度影响较明显。

关键词: 茶树, 蒸腾速率, 气孔导度, 生态因子, 土壤微生物, 野外控制试验, 全球变化, 碳氮循环

Abstract: The transpiration rate and stomatal conductance of tea tree are varied with its cultivars and leaf position.Cultivars with stronger drought resistance have a lower stomatal conductance, and fish leaf has a similar or higher transpiration rate and stomatal conductance than true leaf.The transpiratidn rate of tea leaf is highest in summer and autumn, second in spring, and lowest in winter.On clear days, the diurnal fluctuation of transpiration rate and stomatal conductance of tea leaves shows a single peak, being highest before and after noon, and related significantly to photon flux density, leaf temperature and vapor pressure deficiency.Photon flux density has a significant effect on transpiration rate and stomatal conductance.

Key words: Tea tree, Transpiration rate, Stomatal conductance, Ecological factor, global change, soil microorganism, field manipulative experiment, carbon and nitrogen cycle.