草地学报

›› 2004, Vol. 12 ›› Issue (3): 195-198.DOI: 10.11733/j.issn.1007-0435.2004.03.006

• 研究论文 • 上一篇    下一篇

黄土高原地区施肥对苜蓿生产力的影响

郝明德1, 张春霞1, 魏孝荣2, 王旭刚2, 高长青3   

  1. 1. 中国科学院水利部水土保持研究所, 712100;
    2. 西北农林科技大学资源与环境学院, 陕西, 杨凌, 712100;
    3. 长武县农技中心, 陕西, 长武, 713600
  • 收稿日期:2003-07-31 修回日期:2004-02-06 出版日期:2004-08-15 发布日期:2004-08-15
  • 作者简介:郝明德(1957- ),男,陕西华西人,研究员,从事土壤肥力与黄土高原综合治理研究
  • 基金资助:
    资助项目:中国科学院知识创新方向性项目(KZCX2-413);国家科技攻关(2001BA508B18)

Effect of Rotation and Fertilization to Alfalfa Productivity on the Loess Plateau

HAO Ming-de1, ZHANG Chun-xia1, WEI Xiao-rong2, WANG Xu-gang2, GAO Chang-qing3   

  1. 1. Institute of Soiland Water Conservation, Chinese Academy of Sciences, and Ministry of Water Resources, 712100, China;
    2. College of Resources and Environmental Sciences, Northwestern Science and Technology University of Agricultureand Forestry; Yang ling Shanxi Province, 712100, China;
    3. Changwu Agriculture Technology Extension Center, Changwu, ShanxiProvince, 713600, China
  • Received:2003-07-31 Revised:2004-02-06 Online:2004-08-15 Published:2004-08-15

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摘要： 在长期定位试验的基础上,分析黄土高原地区轮作与施肥对苜蓿生产力的影响。结果表明:苜蓿的高产期在2～5年,其中在第5年达到最高,尔后产草量随着生长年限的延长而逐年下降;施肥具有延长其生长年限的作用;产草量随着降水量的变化增减辐度较大,在生态环境建设和农业生产中,应根据苜蓿的生长特性采取相应的管理措施。

关键词: 草原学, 苜蓿, 施肥, 产草量

Abstract: The paper analyzes the effect of rotation and fertilization on alfalfa productivity on the Loess Plateau based on a long-term experiment. The result shows that the years of high alfalfa production are commonly between two to five years after its planting. The maximum production falls normally on the fifth year. Then the alfalfa yield begins to decline with each passing year. Timely fertilization could prolong its growth year. The yield also ascends or descends with the amount of precipitation.Field management should be conducted according to the growing characteristics optimizing to the reconstruction of ecology environment and agriculture activity.

Key words: Grassland science, Alfalfa, Fertilization, Yield

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