Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2014, Vol. 22 ›› Issue (3): 528-534.DOI: 10.11733/j.issn.1007-0435.2014.03.014

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The Variability of Soil Microorganisms during the Growing Season of Artificial Grassland in Hulunbeier

XU Li-jun1, YANG Gui-xia1, XU Da-wei1, XIN Xiao-ping1, Qinggele2, WANG Qing3, Gaoyuan4, XU Lian-hua5   

  1. 1. Hulunbeier Grassland Ecosystem Observation and Research Station/Institute of Agricultural Resources and Regional Planning of Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Xilinhot Vocational School, Xinlinhot, Inner Mongolia 026000, China;
    3. Xieertala Farm, Hailar, Inner Mongolia 021000, China;
    4. Xin Barag Left Banner, Grassland Stations, Hailar, Inner Mongolia 022150, China;
    5. Linxi Agriculture and Animal Husbandry Bureau, Chifeng, Inner Mongolia 025250, China
  • Received:2013-09-24 Revised:2014-02-18 Online:2014-06-15 Published:2014-06-04

呼伦贝尔地区人工草地生长季土壤微生物数量变化研究

徐丽君1, 杨桂霞1, 徐大伟1, 辛晓平1, 青格勒2, 王青3, 草原4, 许莲华5   

  1. 1. 呼伦贝尔国家野外站 中国农业科学院农业资源与农业区划研究所, 北京 100081;
    2. 锡林浩特职业技术学院, 内蒙古 锡林浩特 026000;
    3. 谢尔塔拉农场, 内蒙古 海拉尔;
    4. 新巴尔虎左旗草原工作站, 内蒙古 海拉尔 021200;
    5. 林西县农牧业局, 内蒙古 赤峰 025250
  • 通讯作者: 辛晓平
  • 作者简介:徐丽君（1978- ），女，蒙古族，内蒙古通辽人，博士，助理研究员，研究方向为牧草栽培与管理，E-mail：xulijin_nmg@163.com；
  • 基金资助:

    国际科技合作项目（2012DFA31290）；公益性行业农业科研专项（201303060）（201003061）；现代农业产业技术体系建设专项资金（CARS-35）资助

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Abstract:

The differences of soil microorganisms (bacterium, fungus, actinomyces, azotobacter) between artificial grassland and natural grassland during growing season in Hulunbeier were studied to reveal the variation of soil microorganisms in artificial grassland. Results showed that the number of soil bacteria reduced in the growing season probably due to a rapid decrease of precipitation in 2012, whereas other soil microorganisms increased during growing season. The number of soil bacteria in artificial grassland was higher than that in natural grassland. The number of soil fungi and actinomycetes was ordered as follow: artificial grassland of alfalfa> natural grassland> artificial grassland of smooth bromegrass. The number of soil azotobacteria in the artificial grassland of smooth bromegrass was higher than others in the initial stage of growing season, but lower than others in later stage. On the whole, the number of soil microorganisms in the 0～10 cm soil layer of artificial grassland was higher than in 10～20 cm soil layer for most of the year in Hulunbeier.

Key words: Artificial grassland, Microorganism, Soil

摘要：

通过分析呼伦贝尔地区人工草地及天然草地生长季土壤微生物（细菌、真菌、放线菌、固氮菌）的数量变化，比较人工草地与天然草地的差异性，揭示人工草地土壤微生物的变化规律。结果表明：土壤细菌数量在2012年生长季可能由于降水量的迅速减少而呈下降趋势；真菌、放线菌和固氮菌数量在生长季均呈上升趋势。人工草地土壤细菌数量在生长季基本高于天然草地，真菌数量基本为苜蓿（Medicagao sativa）人工草地>天然草地>无芒雀麦（Bromus inermis）人工草地，放线菌数量多为苜蓿人工草地>天然草地>无芒雀麦人工草地，固氮菌数量在生长季初期无芒雀麦人工草地稍高，生长季后期苜蓿人工草地和天然草地稍高。从整体上看，呼伦贝尔地区人工草地在生长季0～10 cm土壤微生物数量基本高于10～20 cm，部分月份表现出差异性。

关键词: 人工草地, 微生物, 土壤

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