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应用生态学报 ›› 1999, Vol. 10 ›› Issue (1): 42-44.

• 研究论文 • 上一篇    下一篇

有机物料对白浆土微团聚体组成及其养分含量的影响

邢雪荣1, 李法云2   

  1. 1. 中国科学院植物研究所, 北京 100093;
    2. 辽宁大学环境与生命科学学院, 沈阳 110036
  • 收稿日期:1998-11-18 修回日期:1998-12-07 出版日期:1999-01-25 发布日期:1999-01-25
  • 通讯作者: 邢雪荣,男,31岁,在职博士,主要从事植物生态学研究,发表文章多篇.
  • 基金资助:

    国家!八五?科技攻关资助项目(85-005-01-04)和中国科学院“九五”重点项目(KZ952-J1103).

Effect of organic materials on the composition characteristics of micro-aggregates in albic soils and their nutrient contents

Xing Xuerong1, Li Fayun2   

  1. 1. Institute of Botany, Academia Sinica, Beijing 110093;
    2. Liaoning University, Shenyang 110036
  • Received:1998-11-18 Revised:1998-12-07 Online:1999-01-25 Published:1999-01-25

摘要: 通过长期盆栽试验,研究了施用有机物料对白浆土各粒径微团聚体及其养分的影响。结果表明,施加有机物料能明显减少<1与1~2μm小粒径微团聚体和促进2~5μm与5~10μm粒径微团聚体的形成,提高各粒径微团体中有机碳和全N的含量,后二者主要分布于小粒径的微团聚体中。小粒径微团聚体中的全P含量较高,随着粒径增大,P含量呈下降趋势,在10~50μm粒径处最低,随后又呈上升趋势。其中<1、1~2和5~10μm各粒径中的P含量与土壤有效P呈显着正相关。牛粪对白浆土微团聚体组成及其养分含量的影响好于麦秸。

关键词: 有机物料, 微团聚体, 养分

Abstract: A long term pot experiment shows that the composition of various particle sizes of micro-aggregates in albic soils could be altered through adding organic materials. The content of<1μm and 1~2μm micro-aggregates was decreased, while that of 2~5μm and 5~10μm micro-aggregates increased. The contents of organic C and total N were markedly increased in all sizes micro-aggregates after organic materials amendment, which mainly distributed in small sizes of micro-aggregates. The P content was higher in small sizes of micro-aggregates, while the 10~50μm micro-aggregates had the least P content. There was a significant positive relationship between total P and Olsen P in <1, 1~2 and 5~10μm micro-aggregates. The effect of cow manure was better than that of wheat straw.

Key words: Organic materials, Micro-aggregate, Nutrients