Acta Agrestia Sinica

›› 1999, Vol. 7 ›› Issue (2): 157-164.DOI: 10.11733/j.issn.1007-0435.1999.02.010

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Effects of Fertilizing Nitrogen and Cutting Clone on Degraded Pasture of Russian Wildrye(Psathyrostachys perennis)

Rong Yuping, Han Jianguo, Wang Pei, Li Hongxiang, Ma Chunhui   

  1. Institute of Grassland Science, China Agricultural University, Beijing 100094
  • Online:1999-05-15 Published:1999-05-15

施氮与株丛切割对退化新麦草草地的改良效果

戎郁萍, 韩建国, 王培, 李鸿祥, 马春晖   

  1. 中国农业大学草地研究所, 北京, 100094
  • 基金资助:
    国家“九五”科技攻关专题96-016-01-04

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Abstract: The research program was conducted on the degraded pasture of Russian wildrye by usingnitrogen and cutting clone at Yuershan farm,Heibei Province.The results showed that both of the methodscould improve the forage productivity of the pasture.N-fertilizer not only increased the forage yield of Russian wildrye,but also ameliorated the forage quality of Russian wildrye and the soil characters.Combination of the cutting clone and N-fertilizing nitrogen made the best effect on both of the forage yield and quality of the pasture.The use of clone cutting and 120kg/hm2 achieved optimal forge yield which was 2679.5kg DM/hm2.

Key words: Russian wildrye, Nitrogen, Cutting bunch, Forage yield and quality, Soil nitrogen

摘要： 本文研究了施氮肥和株丛切割对退化新麦草人工草地生产性能的影响。结果表明,施氮肥和株丛切割提高了新麦草草地生产性能和生产力。此外,施氮肥可改善牧草品质及土壤供氮能力。株丛切割和施氮肥(120kg/hm2)相结合与单施氮肥相比,成本较低,对退化新麦草草地的改良效果良好,年均产草量2679.5kgDM/hm2。

关键词: 新麦草人工草地, 氮肥, 株丛切割, 牧草产量和品质, 土壤氮素