草地学报

草地学报 ›› 2017, Vol. 25 ›› Issue (2): 395-400.DOI: 10.11733/j.issn.1007-0435.2017.02.025

• 技术研发 • 上一篇    下一篇

不同刈割频次下老芒麦和草地雀麦的生产力形成机制

包乌云1, 古琛1, 薛文杰1, 陈万杰1, 杜宇凡1, 赵萌莉1, 白高娃2, 王成海3   

  1. 1. 内蒙古农业大学生态环境学院, 内蒙古 呼和浩特 010019;
    2. 内蒙古呼和浩特市托克托县农业技术推广中心, 内蒙古 呼和浩特 010200;
    3. 内蒙古乌兰察布市察右后旗农牧业局, 内蒙古 乌兰察布 012400
  • 出版日期:2017-04-15 发布日期:2017-06-25
  • 通讯作者: 赵萌莉,E-mail:nmgmlzh@126.com
  • 作者简介:包乌云(1988-),女,蒙古族,内蒙古通辽人,博士,E-mail:baoegule@163.com
  • 基金资助:

    内蒙古温性草原牧区"生产生态生活"优化保障技术集成与示范（2012BAD13B02）；牧区优质高效饲草生产利用技术研究示范项目（201003023）资助

Productivity Formation Mechanism of Elymus sibiricus and Bromus riparius Pasture under Different Mowing Times

BAO Wu-yun1, GU Chen1, XUE Wen-jie1, CHEN Wan-jie1, DU Yu-fan1, ZHAO Meng-li1, BAI Gao-wa2, WANG Cheng-hai3   

  1. 1. College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China;
    2. Agricultural Technology Extension Center of Togtoh County, Togtoh County, Hohhot, Inner Mongolia 010200, China;
    3. Agriculture and Animal Husbandry Bureau of chaha'er Right Rear Banner, Ulanqab City, Inner Magolia 012400, China
  • Online:2017-04-15 Published:2017-06-25

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摘要：

本文于2013-2014年在内蒙古呼和浩特市和林格尔县种植的老芒麦（Elymus sibiricus）和草地雀麦（Bromus riparius）单播草地上进行不同频次刈割（一年刈割1次、2次、3次和4次）试验，调查各刈割处理产量、枝条数和植株高度，分析了老芒麦和草地雀麦产量的影响因子及其与枝条数和高度之间的关系。研究表明：刈割极显著降低了老芒麦的再生枝条数（P<0.01），从而影响其产量，产量与植株高度无显著相关性；草地雀麦产量不受刈割频次的影响，刈割增加了其再生枝条数，在高频次刈割时会通过增加其再生枝条数来缓解植株高度降低的问题，但随着刈割茬次的增加其再生草产量仍会降低（P<0.01）。内蒙古呼和浩特地区老芒麦和草地雀麦的适宜的刈割频次均为每年2次。

关键词: 老芒麦, 草地雀麦, 刈割频次, 生产力

Abstract:

We studied mowing times (one times, twice, third and forth times per year)on the monoculture grassland of Elymus sibiricus and Bromus riparius from 2013-2014 in Helinger Hohhot Inner Mongolia, and measured yield, number of sub-branches and heights of forages, then analysed the correlations between the impacting factors of yield and sub-braches and heights. Studies showed that mowing extremely reduced regeneration branch number of Elymus sibiricus (P<0.01), thus affected its production. The correlations between yield and heights of Elymus sibiricus were not significant. Mowing frequency had no effect on the yield of Bromus riparius, but mowing increased its regeneration branch number. High frequency mowing increased the regeneration branch numbers to alleviate the problem of low plant height. But regeneration grass production extremely reduced with the increase of mowing frequency(P<0.01). The best mowing times of Elymus sibiricus and Bromus riparius were twcie per year in Hohhot Inner Mongolia.

Key words: Elymus sibiricus, Bromus riparius, Mowing times, Production

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