草地学报

›› 2011, Vol. 19 ›› Issue (6): 948-953.DOI: 10.11733/j.issn.1007-0435.2011.06.011

• 研究论文 • 上一篇    下一篇

留茬高度对骆驼刺生长发育和产草量的影响

黄彩变, 曾凡江, 雷加强   

  1. 1. 中国科学院新疆生态与地理研究所, 新疆乌鲁木齐830011;
    2. 新疆策勒荒漠草地生态系统国家野外科学观测研究站, 新疆策勒848300
  • 收稿日期:2011-05-16 修回日期:2011-09-20 出版日期:2011-12-15 发布日期:2012-07-09
  • 通讯作者: 黄彩变,E-mail:huangcaibian@tom.com
  • 作者简介:黄彩变(1982- ),女,河南南阳人,博士,助研,研究方向为植物生理生态
  • 基金资助:
    新疆科技重大项目(200733144-2);国家重点基础研究发展计划项目(2009CB421302);国家科技支撑计划项目(2009BAC54B01)资助

Effects of Stubble Height on Aboveground Growth and Yield of Alhagi sparsifolia

HUANG Cai-bian, ZENG Fan-jiang, LEI Jia-qiang   

  1. 1. Xinjiang Institute of Ecology and Geography, CAS, Urumqi, Xinjiang 830011, China;
    2. Cele National Field Science Observation and Research Station for Desert-Gressland Ecology, Cele, Xinjiang 848300, China
  • Received:2011-05-16 Revised:2011-09-20 Online:2011-12-15 Published:2012-07-09

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摘要： 通过分析留茬高度对单株和不同分布密度的骆驼刺(Alhagi sparsifolia)灌丛地上部生长动态的影响,初步探讨了骆驼刺在极端环境条件下的合理刈割方式。结果表明:齐地面刈割后株高、冠幅及地上部鲜重在不同月份均高于留茬-5cm,尤其在地表基本裸露的5月。此外,齐地面刈割使骆驼刺新生枝条的萌动生长时间提前,对其再生性能有明显促进作用。留茬高度对骆驼刺产草量的影响因灌丛分布密度而异,密度在0.44～46和0.36～0.38株·m-2时以齐地面以下5cm刈割时产草量较高,在0.41～0.42和0.33～0.34株·m-2时以齐地面刈割时较高。此外,骆驼刺的生长季(5-9月)和起沙风的频发期相耦合,因此兼顾骆驼刺的经济效益和生态效益,推荐在9月份以后对骆驼刺进行齐地面刈割。

关键词: 留茬高度, 株高, 冠幅, 鲜重, 产草量

Abstract: Alhagi sparsifolia not only plays a central role for wind protection and sand fixation,but is also an important forage grass in the desert-oasis ecotone of the southern marginal zone of the Taklimakan Desert.Effects of stubble height(0 and-5 cm) on aboveground growths of the individual and shrub yield of Alhagi sparsifolia were investigated.Results showed that plant height,canopy,and shoot fresh weight under 0 cm stubble cutting were higher than that under-5 cm cutting,especially there was nearly no other surface vegetation coverage in the tested area in May.Plant growth after 0 cm stubble cutting was significantly hastened compared with that after-5 cm cutting.However,the effects of stubble height on shrub yield differed between its distribution densities.The grass maximum yield in the treatment of-5 cm cutting was higher than that in 0 cm stubble when the densities were 0.44～46 and 0.36～0.38 plant·m-2.However,it was lower than that in 0 cm cutting when the densities were 0.41~0.42 and 0.33~0.34 plant·m-2.Sand-raising wind mainly occurs from May to September coinciding with plant growth stages.Therefore,considering both of the economic and ecological benefit of Alhagi sparsifolia,it was better to harvest Alhagi sparsifolia in 0 cm stubble cutting at the end of September.

Key words: Stubble height, Plant height, Canopy, Fresh weight, Grass yield

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