草地学报

›› 1997, Vol. 5 ›› Issue (2): 80-84.DOI: 10.11733/j.issn.1007-0435.1997.02.002

• 研究论文 • 上一篇    下一篇

松嫩平原盐碱化草地星星草的适应性及耐盐生理特性的研究

王苹, 李建东, 欧勇玲   

  1. 东北师范大学国家草地生态工程实验室, 长春 130024
  • 出版日期:1997-05-15 发布日期:1997-05-15
  • 基金资助:
    国家自然科学基金

Studies on the Adaptability and Tolerance of Puccinellia tenuiflora to Salinity in the Salinized Grassland in Songnen Plain

Wang Ping, Li Jiandong, Ou Yongling   

  1. National Laboratory of Grassland Ecological Engineering, Northeast Normal University, Changchun 130024
  • Online:1997-05-15 Published:1997-05-15

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摘要： 本文对不同程度盐碱生境条件下星星草的生物量,优势度及生理指标进行系统地分析研究。结果表明:星星草的生态分布幅度较窄,但对盐碱生境具有较强的适应能力,在pH值为9.80～10.7,电导率为0.60～0.94ms/cm的土壤都能正常生长。通过其体内积累脯氨酸和无机离子进行渗透调节,以适应盐碱生境条件的变化。

关键词: 星星草, 盐碱生境, 脯氨酸, 无机离子, 渗透调节

Abstract: In this paper, the biomas dominance and physiological index of Puccinellia tenuiflora in different saline-alkaline environments are analyzed.The results show that Puccinellia tenuiflora distributes in a narrow gradients.It can grow well if soil conductivity range is0.60~0.94ms/cm, and pH 9.80~10.7.The adaptatility shows as:accumulation of proline and absorption of inorganic ions could improve the regalation of osmsis.

Key words: Puccinellia tenuiflora, Salty hebitats, Proline, Inorganic ions, To ragulate osmosis