| 土壤优先流对磷素垂直迁移贡献的研究 |
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| 引用本文： | 赵牧秋,陈欣,史云峰.土壤优先流对磷素垂直迁移贡献的研究[J].琼州学院学报,2012,19(2):66-69. |
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| 作者姓名： | 赵牧秋 陈欣 史云峰 |
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| 作者单位： | 1. 琼州学院生物科学与技术学院,海南三亚572022 中国科学院沈阳应用生态研究所,辽宁沈阳110016
2. 中国科学院沈阳应用生态研究所,辽宁沈阳,110016 |
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| 基金项目： | 国家自然科学基金项目，琼州学院青年教师科研基金项目 |
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| 摘 要： | 选择两种不同含磷量水平的土壤进行研究,用亮蓝溶液染色鉴定了优先流的途径和分布,并采集了染色、未染色和混合3种土样进行全磷含量测定并分析了其垂直分布。结果表明,土壤20cm以下土层存在明显的优先流通道,染色土样全磷含量明显高于未受优先流影响的未染色土壤,且差异与土壤含磷量呈反比关系。表层土壤优先流贡献率较低,15～45cm土层优先流贡献率在20～70%范围,且随土壤含磷量的降低贡献率增大。
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| 关 键 词： | 磷 优先流 垂直迁移 土壤 |
Study on the Contribution Rate of Preferential Flows for Soil Phosphorus Vertical Movement |
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| ZHAO Mu-qiu,CHEN Xin,SHI Yun-feng.Study on the Contribution Rate of Preferential Flows for Soil Phosphorus Vertical Movement[J].Journal of Qiongzhou University,2012,19(2):66-69. |
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| Authors: | ZHAO Mu-qiu CHEN Xin SHI Yun-feng |
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| Institution: | 1,2(1 College of Biological Science and Technology,Qiongzhou University,Hainan Sanya 572022,China; 2 Institute of Applied Ecology,Chinese Academy of Sciences,Liaoning Shenyang 110016,China) |
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| Abstract: | In this study,Brilliant blue was used as the dye tracer to identify the preferential path and distribution in two soil with different P contents.Total P content in the dyed,non-dyed and mixed soil samples were determined and vertical distribution was analyzed.The results showed that preferential path present obviously below the 20cm layer.The concentrations of P were significant higher in dyed component than in non-dyed component,and a inverse ratio was appeared between the difference and soil P content.The contribution rate of preferential flows in surface soil was relatively low,but this value in 15-45cm layers was in the range of 20-70% increasing with the decrease of P content. |
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| Keywords: | phosphorus preferential flows vertical movement soil |
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