| 种植牧草在白浆土改良中的作用 |
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| 引用本文： | 周崇莲 齐玉臣. 种植牧草在白浆土改良中的作用[J]. 生态学杂志, 1993, 12(1): 37-41 |
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| 作者姓名： | 周崇莲 齐玉臣 |
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| 作者单位： | 中国科学院沈阳应用生态研究所, 沈阳 110015 |
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| 基金项目： | 国家“七五”科技攻关项目 |
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| 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.
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| 关 键 词： | 紫花苜蓿 土壤生态环境 生态效益 经济效益 |
| 收稿时间： | 1992-03-02 |
Role of planting grass in albic soil amelioration |
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| Yu Deqing,Ding Qingtang,Guan Ximing,Wu Zhijie. Role of planting grass in albic soil amelioration[J]. Chinese Journal of Ecology, 1993, 12(1): 37-41 |
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| Authors: | Yu Deqing Ding Qingtang Guan Ximing Wu Zhijie |
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| Affiliation: | Institute of Applied Ecology, Academia Sinica, Shenyang 110015 |
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| 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. |
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| Keywords: | Alfalfa Soil eco-environment Ecological benefit Economic benefit |
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