| 红壤旱土和水稻土团聚体中磷素的分布特点 |
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| 引用本文： | 郭万伟,肖和艾,吴金水,丁龙君,刘守龙.红壤旱土和水稻土团聚体中磷素的分布特点[J].土壤学报,2009,46(1):85-92. |
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| 作者姓名： | 郭万伟 肖和艾 吴金水 丁龙君 刘守龙 |
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| 作者单位： | 1. 中国科学院亚热带农业生态研究所,亚热带农业生态重点实验室,长沙,410125;中国科学院研究生院,北京,100039
2. 中国科学院亚热带农业生态研究所,亚热带农业生态重点实验室,长沙,410125 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目，国家自然科学基金面上项目，国家科技支撑计划 |
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| 摘 要： | 为深入探讨红壤磷素有效性的控制机理,研究了典型红壤旱土和水稻土团聚体中磷的组分与分布特点。结果表明:旱土和水稻土以粒径>0.2mm的团聚体为主,且在该级土壤团聚体中磷素含量较高;两种土壤>0.2mm团聚体中吸附态无机磷以Fe-P为主,而<0.02mm团聚体以O-P为主;水稻土>0.2mm和<0.002mm团聚体的各组分有机磷总量亦显著高于旱土对应的团聚体。说明土壤磷的形态分布与团聚体粒级有密切关系,旱土有效磷含量较低可能与其团聚体游离氧化铁含量较高、且有机磷含量较低有关。
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| 关 键 词： | 红壤 团聚体 吸附态无机磷 有机磷 |
Distribution of phosphorus in water-stable aggregates in upland and paddy red earths |
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| Guo Wanwei,Xiao Heai,Wu Jinshui,Ding Longjun and Liu Shoulong.Distribution of phosphorus in water-stable aggregates in upland and paddy red earths[J].Acta Pedologica Sinica,2009,46(1):85-92. |
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| Authors: | Guo Wanwei Xiao Heai Wu Jinshui Ding Longjun and Liu Shoulong |
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| Institution: | Key Laboratory of Subtropical Agriculture Ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Graduate University of Chinese Academy of Sciences;Key Laboratory of Subtropical Agriculture Ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences;Key Laboratory of Subtropical Agriculture Ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences;Key Laboratory of Subtropical Agriculture Ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Graduate University of Chinese Academy of Sciences;Key Laboratory of Subtropical Agriculture Ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences |
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| Abstract: | |
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| Keywords: | Red soils Aggregates Adsorbed inorganic phosphorus Organic phosphorus |
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