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应用生态学报 ›› 1993, Vol. 4 ›› Issue (1): 37-41.

• 研究论文 • 上一篇    下一篇

种植牧草在白浆土改良中的作用

于德清, 丁庆堂, 关熙铭, 武志杰   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1992-03-02 修回日期:1992-06-19 出版日期:1993-01-25 发布日期:1993-01-25
  • 基金资助:

    国家“七五”科技攻关项目

Role of planting grass in albic soil amelioration

Yu Deqing, Ding Qingtang, Guan Ximing, Wu Zhijie   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1992-03-02 Revised:1992-06-19 Online:1993-01-25 Published:1993-01-25

摘要: 研究了农田生态系统中引种紫花苜蓿对土壤生态环境的影响.结果表明,紫花苜蓿种植3年以后,白浆土的通气孔隙增加2.37—5.34%,渗透系数增加0.7—5.5倍,土壤有机碳增加0.349—0.600%,作物产量平均提高25%.种植苜蓿比单种作物的产投比高0.36—0.39.

关键词: 紫花苜蓿, 土壤生态环境, 生态效益, 经济效益, ArcGIS, 潜在地理分布, 物种分布模型, 谷子

Abstract: The effect of alfalfa introduced in farmland ecosystem on soil eco-environment is studied in this paper. Experimental results show that after three years planting of alfalfa, soil aeration increases by 2.37—5.34%, soil organic Ccontent by 0.349—0.600%, average crop yield by 25%, and filtration coefficient by a factor of 1.7—6.5. The ratio output and input of planting alfalfa is 0.36—0.39times higher than planting crop alone.

Key words: Alfalfa, Soil eco-environment, Ecological benefit, Economic benefit, potential geographical distribution., foxtail millet, ArcGIS, species distribution model