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| 施用畜禽粪便和化肥对土壤活性有机碳库和团聚体稳定性影响 | |
| 引用本文： | 李江涛,钟晓兰,赵其国.施用畜禽粪便和化肥对土壤活性有机碳库和团聚体稳定性影响[J].水土保持学报,2010,24(1). |
| 作者姓名： | 李江涛 钟晓兰 赵其国 |
| 作者单位： | 1. 广州大学地理科学学院,广州,510006 2. 华南农业大学信息学院,广州,510642 3. 中国科学院南京土壤研究所,南京,210008 |
| 基金项目： | 中国科学院知识创新项目(KZCX3-SW-435); 广州大学博士启动基金(LJT1-1001); 广州大学新苗计划基金(LJT1-1002) |
| 摘 要： | 活性有机碳含量和土壤团聚体的形成与稳定在长期人为扰动土壤上有重要作用。通过分析稻麦轮作土壤上长期(20年)施用畜禽粪便和化肥土壤活性有机碳含量、团聚体稳定性及活性有机碳与团聚体稳定性的关系,研究了人为扰动下土壤施肥管理对土壤活性碳和团聚体稳定性的影响。研究结果显示,与施用化肥比较,施用畜禽粪便显著提高了土壤总有机碳(SOC)和颗粒有机碳(POC)、可溶性有机碳(DOC)、热水提取态有机碳(HWOC)及土壤碳水化合物态碳(SCC)等活性有机碳库含量(p0.05),其中HWOC含量是施用化肥处理的1.7～2.4倍。施用畜禽粪便土壤团聚体稳定性指数大团聚体颗粒百分含量(PMI)、抗糊化指数(ASI)和标准化平均重量直径(NMWD)指数分别是施用化肥土壤的1.31,3.39,2.14倍,显著高于施用化肥土壤(p0.05),其中施用猪粪处理土壤团聚体稳定性最高。稳定性评价指数PMI、ASI以及NMWD间有极显著相关(p0.01)。SOC和POC含量与土壤团聚体稳定性指数间没有相关性(p0.05);SCC与团聚体稳定性指数间相关性较弱;DOC和HWOC与团聚体稳定性指数间则表现为显著或极显著相关。研究结果说明,施用畜禽粪便比化肥更有利于提高人为扰动土壤中总有机碳和活性有机碳含量及土壤团聚体稳定性,土壤活性有机碳是团聚体形成与稳定过程中重要影响因素,但受土壤发育母质等因素影响,不同土壤上其作用效果有一定差异。 |
| 关 键 词： | 土壤活性有机碳 团聚体稳定性 畜禽粪便 化肥 稻麦轮作 |
Soil Active Organic Carbon Pool and Aggregate Stability as Affected by Application of Livestock and Poultry Excrement and Chemical Fertilizer |
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| LI Jiang-tao,ZHONG Xiao-lan,ZHAO Qi-guo.Soil Active Organic Carbon Pool and Aggregate Stability as Affected by Application of Livestock and Poultry Excrement and Chemical Fertilizer[J].Journal of Soil and Water Conservation,2010,24(1). | |
| Authors: | LI Jiang-tao ZHONG Xiao-lan ZHAO Qi-guo |
| Institution: | LI Jiang-tao1,ZHONG Xiao-lan2,ZHAO Qi-guo3 (1.School of Geographical Sciences,Guangzhou University,Guangzhou 510006,2.College of Informatics,South China Agricultural University,Guangzhou 510642,3.Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008) |
| Abstract: | Soil active organic carbon and aggregation and stabilization of soil aggregate are very important in long-term disturbed soil.Rice-wheat rotation soil was investigated in this study,in which livestock and poultry excrement (LPE) and chemical fertilizer (CF) was applied more than 20 years as a main fertilizer.soil total organic C (SOC),particulate organic C (POC),dissolved organic C (DOC),hot water extractable organic C (HWOC) and soil carbohydrate carbon (SCC) in bulk soil and aggregate soil were measured; ... |
| Keywords: | soil active organic carbon pool soil aggregate stability livestock and poultry excrement (LPE) chemical fertilizer (CF) rice-wheat rotation system |
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