| 土壤特征微团聚体的组成比例与肥力评价 |
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| 引用本文： | 陈恩凤,关连珠,汪景宽,颜丽,王铁宇,张继宏,周礼恺,陈利军,李荣华.土壤特征微团聚体的组成比例与肥力评价[J].土壤学报,2001,38(1):49-53. |
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| 作者姓名： | 陈恩凤 关连珠 汪景宽 颜丽 王铁宇 张继宏 周礼恺 陈利军 李荣华 |
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| 作者单位： | 1. 沈阳农业大学,
2. 中国科学院沈阳应用生态研究所, |
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| 基金项目： | 国家自然科学基金资助项目（批准号：49571044） |
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| 摘 要： | 以棕壤为例研究了15对不同肥力水平的典型棕壤、棕壤型水稻土的特征微团聚体（＜10m和＞10m）的组成比例，结果表明该比例即微团聚体（＜10m）／微团聚体（＞10m）可成为土壤肥力水平的一个综合指标。以该指标为标准的典型棕壤和棕壤型水稻土肥、瘦地区分界数分别为0.25和0.35，小于此二值分别为各自肥地，反之亦反。土壤培肥措施可使肥、瘦地特征微团聚体的比例降低并提高土壤肥力水平或根本改变瘦地肥力实质。
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| 关 键 词： | 土壤特征微团聚体 土壤肥力指标 棕壤 |
| 收稿时间： | 1999/10/27 0:00:00 |
| 修稿时间： | 1999年10月27 |
COMPOSITIONAL PROPORTION OF SOIL CHARACTERISTIC MICROAGGREGATES AND SOIL FERTILITY EVALUATION |
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| Chen En-feng,Guan Lian-zhu,Wang Jing-kuan,Yan Li,Wang Tie-yu,Zhang Ji-hong,Zhou Li-kai,Chen Li-jun and Li Rong-hua.COMPOSITIONAL PROPORTION OF SOIL CHARACTERISTIC MICROAGGREGATES AND SOIL FERTILITY EVALUATION[J].Acta Pedologica Sinica,2001,38(1):49-53. |
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| Authors: | Chen En-feng Guan Lian-zhu Wang Jing-kuan Yan Li Wang Tie-yu Zhang Ji-hong Zhou Li-kai Chen Li-jun and Li Rong-hua |
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| Institution: | Shenyang Agricultural University, Shenyang 110161;Shenyang Agricultural University, Shenyang 110161;Shenyang Agricultural University, Shenyang 110161;Shenyang Agricultural University, Shenyang 110161;Shenyang Agricultural University, Shenyang 110161;Shenyang Agricultural University, Shenyang 110161;Institute of Applied Ecology, Academia Sinica, Shenyang 110015;Institute of Applied Ecology, Academia Sinica, Shenyang 110015;Institute of Applied Ecology, Academia Sinica, Shenyang 110015 |
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| Abstract: | Studies on the compositional proportion of characteristic microaggregates of 15 pairs of fertile and infertile typical brown earth and brown earth type paddy soil were carried out. Results showed that the proportion of (＜10m)／(＞10m) microa- ggregates could be used as an integrative index for evaluation of their fertility levels. The critical value of this proportion is 0.25 and 0.35, respectively, for the typical brown earth and brown earth type paddy soil, i. e., the soil fertility is higher if the value is less, or otherwise. Soil improvement measures could decrease the compositional proportion of soil characteristic microaggregates, and increase the soil fertility. |
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| Keywords: | Characteristic microaggerates Soil fertility index Brown earth |
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