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中国沙漠 ›› 1997, Vol. 17 ›› Issue (3): 301-303.

• 研究论文 • 上一篇    下一篇

金昌市4种乔木抗旱性生理指标的研究

周海燕   

  1. 中国科学院兰州沙漠研究所, 兰州 730000
  • 收稿日期:1997-02-18 修回日期:1997-05-18 出版日期:1997-09-20 发布日期:1997-09-20
  • 作者简介:周海燕,女,1963年出生,理学硕士,助理研究员。主要从事干旱区植物生理研究。

DROUGHT-RESISTANCE OF 4 TREES IN JINCHANG CITY

Zhou Haiyan   

  1. Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000
  • Received:1997-02-18 Revised:1997-05-18 Online:1997-09-20 Published:1997-09-20

摘要: 对金昌市国槐、沙枣、新疆杨和圆柏进行了PV曲线主要水分状况参数的测定;从叶水势、相对水分亏缺、束缚水含量、束水比及细胞弹性模量的测算结果分析了树种的抗旱特性:圆柏和国槐是以较坚硬的细胞壁保存体内水分,维持高水势的膨压,以低的水分亏缺及高的束缚水含量与束水比的方式完成生命过程的;沙枣和新疆杨是以柔软具弹性的细胞壁在低水势下保持膨压,以低束缚水含量、低的束水比和高的水分亏缺方式完成其生命过程的。从综合抗旱性指数的测算结果得出的抗旱性排序为:圆柏>国槐>沙枣>新疆杨。

关键词: 乔木树种, 抗旱特性, 综合抗旱性指数

Abstract: Through determining the leaf water pressure,water deficiency,bound water quantity and its ratio and the elastic modulus of cells,the nature of drought-resistance of 4 trees was comprehensively analysed with PV technology.The results showed that Sabina and Chinese scholartree have hard cell wall,higher water pressure,lower water deficiency,higher bound water and ratio;and Narrow-leaved oleaster and Taklimakan poplar have soft and elastic cell wall,lower water pressure,higher water deficiency,lower bound water and ratio.The comprehensive indicators suggested the order of drought-resistance of these trees:Sabina > Chinese scholartree > Narrow-leaved oleaster > Taklimakan poplar.

Key words: Species of tree, Drought-resistance, Comprehensive indicators

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