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草业学报 ›› 2015, Vol. 24 ›› Issue (2): 31-40.DOI: 10.11686/cyxb20150204

• 研究论文 • 上一篇    下一篇

不同营养调控对草地早熟禾生长和内源激素含量影响研究

刘强1, 4, 张锁科1, 2, 孙万斌1, 3, 俞玲1, 2, 马晖玲1, 2, 3*, *   

  1. 1.甘肃农业大学草业学院,甘肃 兰州730070;
    2.草业生态系统教育部重点实验室,甘肃 兰州730070;
    3.中-美草地畜牧业可持续发展研究中心,甘肃 兰州730070;
    4.甘肃省农垦农业研究院,甘肃 武威733006
  • 收稿日期:2014-09-05 出版日期:2015-02-20 发布日期:2015-02-20
  • 作者简介:刘强(1971-),男,甘肃天水人,研究员,在读博士。E-mail:944614087@qq.com
  • 基金资助:
    国家自然科学基金(31160482)和草地早熟禾种间体细胞杂交项目资助

Nutrition effects on growth and endogenous hormones in kentucky bluegrass

LIU Qiang1, 4, ZHANG Suoke1, 2, SUN Wanbin1, 3, YU Ling1, 2, MA Huiling1, 2, 3, *   

  1. 1.College of Pratacultural, Gansu Agricultural University, Lanzhou 730070, China;
    2.Key Laboratory of Grassland Ecosystem, Ministry of Education, Lanzhou 730070, China;
    3.Sino-U.S. Centers for Grazingland Ecosystem Sustainability, Lanzhou 730070, China;
    4.Gansu State Farms Academy of Agricultural Research, Wuwei 733006, China
  • Received:2014-09-05 Online:2015-02-20 Published:2015-02-20

摘要: 养分在促进草坪生长中发挥着重要的作用。为了探讨不同肥料在草地早熟禾生长中的作用机理,采用不同的施肥组合进行草地早熟禾草坪的建植试验,研究了不同养分调控下草地早熟禾生长发育状况与内源激素含量水平的相关性,并对草地早熟禾坪用质量状况进行了评价。研究结果表明,在配合施用一定量生物菌肥和柠檬酸的情况下,较少量的氮、磷肥施用(处理3)能显著提高草地早熟禾坪用质量;各施肥组合能显著促进植株体IAA和ZT含量的提高,抑制ABA含量在根部的合成和体内的积累;在施肥后的35 d内,IAA和ZT含量随着施肥后时间的推移而不断增加,而ABA含量在除对照以外的各处理中相对较低,且随着施肥后时间的推移,其含量也明显下降,但在对照处理中却表现出一定的增加态势。

Abstract: Nutrient application is essential in turf management. To help reveal the mechanisms of fertilizer improvement in turfgrass growth, field experiments were carried out testing different fertilizer combinations. The relationship between endogenous hormone content and growth of kentucky bluegrass (Poa pratensis) was determined; turf quality was also evaluated. Fertilizer application (bio-fertilizer and citric acid) significantly affected turf quality. Fertilization significantly improved indoleacetic acid (IAA) and zeatin (ZT) content and restricted the synthesis and accumulation of abscisic acid (ABA).Post fertilization, IAA and ZT content increased with time (35 days). However, ABA content was relatively low and decreased after fertilizer application.