| 不同种植模式下紫色土养分流失影响因子研究 |
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| 引用本文： | 刘玉民,龙伟,刘亚敏,史东梅.不同种植模式下紫色土养分流失影响因子研究[J].水土保持学报,2005,19(5):81-84. |
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| 作者姓名： | 刘玉民 龙伟 刘亚敏 史东梅 |
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| 作者单位： | [1]西南大学资源与环境学院,重庆400716 [2]西南大学农学与生命科学学院,重庆400716 |
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| 基金项目： | 国家科技攻关（2004BA604A05）项目 |
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| 摘 要： | 通过建立5个不同种植模式的径流小区，对每个小区径流泥沙中养分的含量进行研究．探讨机械组成、微团聚体含量、粘粒团聚度等因子对养分流失影响的程度，结果发现：15～30cm土层中〈0．01mm的粘粒含量与径流泥沙中全钾含量和速效钾含量有显著的相关性。0～15cm层中的〈0．01mm和〈0．001mm微团聚体含量都与径流泥沙中有机质、速效钾和全氮的含量有显著的相关性。同层中〈0．01mm粘粒团聚度与径流泥沙中全氮含量和速效钾含量有显著的相关性，而同层〈0．001mm粘粒团聚度与径流泥沙中全磷含量、速效钾含量和速效磷含量有显著的正相关。
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| 关 键 词： | 不同种植模式 养分流失 影响因子 紫色土 |
| 文章编号： | 1009-2242（2005）05-0081-04 |
| 收稿时间： | 2005-03-09 |
| 修稿时间： | 2005-03-09 |
Study on Influencing Factors of Nutrient Loss under Different Land Use Patterns in Purple Soils |
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| LIU Yu-min,LONG Wei,LIU Ya-min,SHI Dong-mei.Study on Influencing Factors of Nutrient Loss under Different Land Use Patterns in Purple Soils[J].Journal of Soil and Water Conservation,2005,19(5):81-84. |
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| Authors: | LIU Yu-min LONG Wei LIU Ya-min SHI Dong-mei |
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| Institution: | 1. College of Resources and Environment, Southwest University, Chongqing 400716 ; 2. College Agronomy and Life Science, Southwest University, Chongqing 400716 |
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| Abstract: | Five runoff plots,which different land use patterns was built.Studying the influnces of various factors on nutrients losses.The result of the content of <0.01mm granule in 0~15 cm soil layer has observable correlation to the content of total K and Olsen-K in runoff mud and sand;The content of <0.01 mm and <0.001 mm micro aggregates in 0~15 cm soil layer has observable correlation to the content of organism,Olsen-K and total N;The degree of <0.01 mm granule reunite in the same layer has observable correlation to the content of total N and Olsen-K,and the degree of <0.001 mm granule reunite has observable correlation to the content of total P,Olsen-p and Olsen-K. |
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| Keywords: | different land use patterns nutrient loss influencing factors purple soils |
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