Acta Agrestia Sinica

›› 2006, Vol. 14 ›› Issue (4): 306-309,314.DOI: 10.11733/j.issn.1007-0435.2006.04.002

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Effects of Nutrients Availability on Linked Two-Ramets of a Stoloniferous Herb, the Buffalograss

NIU Jian-zhong1,2, ZHOU He1, ZHANG Cheng-yi3, MAO Pei-sheng1, WANG Xian-guo1, ZHANG Jia-hua3   

  1. 1. Institute of Grassland Science, China Agriculture University, Beijing 100094, China;
    2. Administrative Office of the Temple of Heaven, Beijing 100050, China;
    3. China Bureau of Meteorology, Beijing 100081, China
  • Received:2006-03-22 Revised:2006-10-13 Online:2006-11-15 Published:2006-11-15

野牛草分株对养分异质性供应的反应

牛建忠1,2, 周禾1, 张称意3, 毛培胜1, 王显国1, 张佳华3   

  1. 1. 中国农业大学草地研究所, 北京, 100094;
    2. 北京市天坛公园管理处, 北京, 100050;
    3. 中国气象局, 北京, 100081
  • 通讯作者: 周禾,E-m ail:zh ou he@cau.edu.cn
  • 作者简介:牛建忠(1963- ),男,内蒙古乌兰察布市人,高级工程师,在读博士,主要从事草坪草育种和种群生态学研究,E-mail:njzh2005@sohu.com.cn
  • 基金资助:
    国家研究与开发专项(JY03-B-31);北京市自然科学基金项目(6992015)资助

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Abstract: Results of the study on available nutrients to linked two-ramets of buffalograss (Buchloë dactyloides) indicate that the first-growing ramets are benefited immensely from the next-growing ramets, but the latter are not repaid by the former which are the unidirectional beneficiary. The root biomass and height of the later-growing ramets apparently rise faster than those of the earlier-growing ramets. Contrarily, the tiller node biomass, 1st stolon biomass, 1st stolon node number, and 1st stolon length of the first-emerging ramets grow quicker than those of the later-growing ramets. However, the next-growing ramets can be benefited from the first-growing ones in the tiller node biomass and the longest 1st stolon.

Key words: Buffalograss[Buchloë dactyloides(Nutt.)Engelm], Clonal plant, Stolon, Nutrients, Hetero-geneousness

摘要： 野牛草分株对养分异质性反应的研究表明:姊株能显著地从妹株分株生物量获益,但妹株并不能从姊株获益,属于单向获益;妹株株高、根系生物量显著地比姊株增长快;姊株1级匍匐茎总长、总节数、生物量及分蘖节生物量显著比妹株增长快;妹株能显著从姊株最长1级匍匐茎和分蘖节生物量获益。

关键词: 野牛草, 克隆植物, 匍匐茎, 养分, 异质性

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