| 农田生态对土壤肥力的保护效应 |
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| 引用本文： | 吕家珑,张一平,王旭东,汤代良,化党领.农田生态对土壤肥力的保护效应[J].生态学报,2001,21(4):613-616. |
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| 作者姓名： | 吕家珑 张一平 王旭东 汤代良 化党领 |
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| 作者单位： | 西北农林科技大学资源环境学院, |
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| 基金项目： | 国家自然科学基金重大项目(39790100) |
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| 摘 要： | 长期定位试验研究表明，休闲不利于土壤有机质含量的增加，能促使胡敏酸能态降低，分子变大，芳构化程度增大，向“老化”的方向发展，休闲还使G2型复合体向G1型转化，土壤酶活性降低，生化作用强度增大，总体肥力水平下降，因此，农田生态系统对土壤肥力具有保护效应。
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| 关 键 词： | 定位试验 农田生态系统 土壤肥力 |
| 文章编号： | 1000-0933(2001)04-0613-04 |
| 收稿时间： | 2/3/1999 12:00:00 AM |
| 修稿时间： | 1999/9/21 0:00:00 |
Protective effect of agri-land ecosystem for soil fertility |
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| LU Jialong,ZHANG Yiping,WANG Xudong,SHANG Dailiang and HUA Dangling.Protective effect of agri-land ecosystem for soil fertility[J].Acta Ecologica Sinica,2001,21(4):613-616. |
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| Authors: | LU Jialong ZHANG Yiping WANG Xudong SHANG Dailiang and HUA Dangling |
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| Institution: | College of Resources and Environment Science; Northwestern Science and Technology University of Agriculture and Forestry; Shaanxi; Yangling; China |
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| Abstract: | Research of long\|term fix\|experiments showed that in the semi\|arid area,the fallow was unfavourable to increase of soil organic matter content.It impelled to drop energy state,increase aromaticity extent and develop forward to aging of humic acid.Fallow made the soil composite aggregate change from G 2 to G\-1,decrease the activity of soil enzyme,increase the intensity of biochemistry action and decrease the level of total fertility.So,agri\|land ecosystem had protective effect of soil fertility. |
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| Keywords: | fix-experiment agri-land ecosystem fallow soil fertility |
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