Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2015, Vol. 23 ›› Issue (4): 893-896.DOI: 10.11733/j.issn.1007-0435.2015.04.035

Previous Articles    

Effects of Nitrogen Fertilizer on the Yield and Nutrition Absorption of Artificial Leymus chinensis Grassland

SU Fu-yuan1, HAO Ming-de1,2, GUO Hui-hui1, MENG Jing3, XIAO Qing-hong3, WU Dong-bo3, LIU Gong-she4   

  1. 1. College of Natural Resource and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
    2. Institute of Soil and Water Conservation of Northwest A&F University, Yangling, Shaanxi Province 712100, China;
    3. Ningxia Agricultural Comprehensive Development Office, Yinchun, Ningxia 750011, China;
    4. Key Laboratory of Plant Resources, Institute of Botany, Chinse Academy of Sciences, Beijing 100093, China
  • Received:2014-10-23 Revised:2015-03-05 Online:2015-08-15 Published:2015-08-26

施用氮肥对人工羊草草地产量及养分吸收的影响

苏富源1, 郝明德1,2, 郭慧慧1, 蒙静3, 肖庆红3, 武东波3, 刘公社4   

  1. 1. 西北农林科技大学资源环境学院, 陕西 杨凌 712100;
    2. 西北农林科技大学水土保持研究所, 陕西 杨凌 712100;
    3. 宁夏农业综合开发办公室, 宁夏 银川 750011;
    4. 中国科学院植物研究所北方资源植物重点实验室, 北京 100093
  • 通讯作者: 郝明德
  • 作者简介:苏富源(1988-),女,河南商丘人,硕士,主要从事羊草水肥调控研究,E-mail:sufy1991@163.com
  • 基金资助:

    国家科技支撑计划重大项目(2011BAD31B01);宁夏农业综合开发土地治理科技推广项目(NTKJ-2014)资助

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Abstract:

The purpose of this project was to study the effects of nitrogen fertilizer on the dry grass yield and nutrition absorption of artificial Leymus chinensis grassland and provide the basis for the resonble application of nitrigen fertilizer. Leymus chinensis‘Zhongke No.2’ was used as test material and five nitrogen fertilizer levels were set up. The contents of N, P2O5, K2O at different growth stages were analyzed. Dry grass yield of Leymus chinensis‘Zhongke No.2’ was also measured. The results showed that nitrogen fertilizer could significantly increase the dry grass yield of Leymus chinensis. The nitrogen fertilizer level of 133.8 kg·hm-2 was the optimum to the dry grass yield that was 13134.7 kg·hm-2. The dry grass yield was increased 55.5 kg by pure nitrogen per kilogram. Nitrogen fertilizer could increase the N, P2O5, K2O uptake and accumulation of Leymus chinensis.

Key words: Leymus chinensis, Nitrogen fertilizer, Yield, Nutrition absorption

摘要：

为研究施氮对人工羊草草地产量及养分吸收的影响,以中科2号羊草(Leymus chinensis ‘Zhongke No.2’)为材料,设置5个氮肥处理水平,测定不同生育期羊草氮、磷、钾养分含量以及干草产量。结果表明:施用氮肥可以显著提高羊草产量,施用量以133.8 kg·hm-2最为适宜,羊草产量为13134.7 kg·hm-2,每千克纯氮增产55.5 kg;施用氮肥可以提高羊草氮、磷、钾吸收量。

关键词: 羊草, 氮肥, 产量, 养分吸收

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