Acta Agrestia Sinica

›› 2007, Vol. 15 ›› Issue (3): 269-272.DOI: 10.11733/j.issn.1007-0435.2007.03.014

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Yield and Its Contributors of Agropyron mongolicum Keng and Psathyrostachys juncea(Fisch.) Nevski under Irrigation and Rainfed Conditions

HAI Tang1,2, HAN Guo-dong2, HU Yao-gao1   

  1. 1. Forage Industry Engineering Research Center, College Agronomy and Biotechndogy, China Agricultural University, Beijing 100094, China;
    2. College of Environment, Inner Mongolia Agricultural University, Huhhot 010018, China
  • Received:2007-03-20 Revised:2007-04-23 Online:2007-06-15 Published:2007-06-15

荒漠草原区灌溉和旱作条件下蒙古冰草和新麦草产草量的构成因素

海棠1,2, 韩国栋2, 胡跃高1   

  1. 1. 中国农业大学农学与生物技术学院草业工程研究中心, 北京, 100094;
    2. 内蒙古农业大学生态环境学院, 呼和浩特, 010018
  • 通讯作者: 胡跃高,E-mail:h uyueg ao@cau.edu.cn
  • 作者简介:海棠(1963- ),女,蒙古族,副教授,博士研究生,研究方向为农牧结合系统工程,E-mail:Haitang63106@163.com
  • 基金资助:
    内蒙古教委会重点领域项目(ZL98005)

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Abstract: The adaptability,yield variation,and yield factors of Agropyron mongolicum Keng and Psathyrostachys juncea(Fisch.) Nevski were investigated on irrigated and rainfed land in hungriness grassland areas.The results show that the yield and its corresponding contributors of A.mongolicum and P.juncea on irrigated land were higher than that on rainfed land. Under rainfed conditions,the sort order of yield contributors for A.mongolicum was stem weight>plant height>spike weight>tillering number>leaf weight and for P.juncea was stem weight>tillering number>plant height>leaf weight>spike weight.Under irrigation conditions,the sort order of yield contributors for A.mongolicum was stem weight>tillering number>plant height>spike weight>leaf weight and for P.juncea was stem weight>plant height>tillering number>leaf weight>spike weight.

Key words: Hungriness grassland, Irrigation, Rainfed, Agropyron mongolicum Keng, Psathyrostachys juncea(Fisch.) Nevski, Yield, Yield contributor

摘要： 对荒漠草原区灌溉和旱作条件下蒙古冰草和新麦草的适应性、单株产草量构成因子及其贡献率进行了研究。结果表明:灌溉条件下蒙古冰草和新麦草单株产草量及其各构成因子产量或数值皆大于旱作条件下;旱作条件下蒙古冰草产草量构成因子对单株产草量的贡献率大小顺序为,茎重>株高>穗重>分蘖数>叶重,新麦草为茎重>分蘖数>株高>叶重>穗重;灌溉条件下蒙古冰草产草量构成因子对单株产草量的贡献率大小顺序为,茎重>分蘖数>株高>穗重>叶重,新麦草为茎重>株高>分蘖数>叶重>穗重。

关键词: 荒漠草原区, 灌溉, 旱作, 蒙古冰草, 新麦草, 单株产草量, 产草量构成因素

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