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应用生态学报 ›› 1999, Vol. 10 ›› Issue (5): 553-555.

• 研究论文 • 上一篇    下一篇

羊草种群生物量生殖分配的初步研究

王仁忠1, 祖元刚1, 聂绍荃2   

  1. 1. 东北师范大学国家草地生态工程实验室, 长春130024;
    2. 东北林业大学森林植物生态学开放研究实验室, 哈尔滨150040
  • 收稿日期:1998-01-19 修回日期:1998-10-26 出版日期:1999-09-25 发布日期:1999-09-25
  • 通讯作者: 王仁忠,男,34岁,硕士,副教授,主要从事生态学研究,发表论文40余篇.E-mail:wangrz@ivy.nenu.edu.cn E-mail:wangrz@ivy.nenu.edu.cn
  • 基金资助:

    国家教委跨世纪优秀人才培养计划基金和黑龙江省杰出青年科学基金资助项目.

Preliminary studty on biomass reproductive allocation in Leymus chinensis population

Wang Renzhong1, Zu Yuangang1, Nie Shaoquan2   

  1. National Laboratory of Grassland Ecological Engineering, Northeast Normal University, Changchun 130024
  • Received:1998-01-19 Revised:1998-10-26 Online:1999-09-25 Published:1999-09-25

摘要: 对羊草种群生物量生殖分配的研究表明,在生殖生长过程中,种群用于根茎和营养生长的生物量生殖分配占有绝对优势比例,而用于有性生殖的生物量生殖分配比例较小,在10%以下。在羊草种群构件生物量生殖分配中,根茎和营养枝的叶占有较大比例(20%~40%),而用于有性繁殖体种子生产的比例很小,在1.5%以下。对有性繁殖的小比例投资是导致羊草种群有性繁殖体种子产量低的重要原因.

关键词: 生物量生殖分配, 羊草种群, 生殖生长, 实生苗, 自然更新, 水分利用效率, 叶绿素含量, 光合特性

Abstract: The study shows that the allocation rate of the biomass in Leymus chinensis for its rhizome and vegetative growth was much higher, and that for sexual growth was less than 10%. The ratio of the biomass of rhizome and vegetative shoot was as much as 20~40% of the total, while that of seed was less that 1.5%. The low investment in sexual reproduction of L.chinensis was the main reason for its low seed production.

Key words: Biomass reproductive allocation, Leymus chinensis population, Reproduction, seedling, natural regeneration, water use efficiency, chlorophyll content, photosynthetic characteristics