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草业学报 ›› 2012, Vol. 21 ›› Issue (4): 72-78.

• 研究论文 • 上一篇    下一篇

水分胁迫对王草生长的影响

温翠平1,李威1,漆智平2,唐树梅1*   

  1. 1.海南大学农学院, 海南 儋州 571737;
    2.中国热带农业科学院品种资源研究所, 海南 儋州571737
  • 收稿日期:2011-06-20 出版日期:2012-04-25 发布日期:2012-08-20
  • 通讯作者: E-mail:tsm317@163.com
  • 作者简介:温翠平(1987-),女,广东梅县人,在读硕士。E-mail:weicuiping020@163.com
  • 基金资助:
    国家牧草产业体系和海南大学211建设项目课题资助。

Effect of water stress on the growth of kinggrass

WEN Cui-ping1, LI Wei1, QI Zhi-ping2, TANG Shu-mei1   

  1. 1.College of Agriculture, Hainan University, Danzhou 571737, China;
    2.Tropical Crops Genetic Resources Institute, CATAS, Danzhou 571737, China
  • Received:2011-06-20 Online:2012-04-25 Published:2012-08-20

摘要: 采用盆栽试验的方法,研究在不同土壤水分条件下王草生长和生理响应的机制,为王草生产上水分的合理施用提供参考。研究结果表明,随着土壤含水量的降低,王草的鲜重、干重、组织含水量、相对含水量,都呈逐渐下降的趋势,而王草叶片的水分饱和亏缺及体内的游离脯氨酸则出现上升的趋势。王草生长的最佳土壤含水量为田间持水量的65%~75%,土壤田间持水量为55%~95%时王草均能正常生长,而使王草生长受限的为5%~45%及淹水状况。

Abstract: A pot culture experiment was used to study growth and mechanisms of physiological response of kinggrass (Pennisetum purpureum×P. glaucum) in different soil moisture conditions to provide a reference for rational water use in kinggrass production. With a reduction of soil moisture content, the fresh weight, dry weight, organization water content and relative water content gradually decreased while water sufficiency deficiency and free proline of kinggrass gradually increased. The most suitable soil moisture content for kinggrass was 65%-75% of field capacity, and kinggrass could grow normally at 55%-95% of field capacity, but growth was limited at 5%-45% or during flooding.

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