The Soil Factors Influencing Phosphorus Loss by Field Surface Runoff in Dianchi Watershed

ZHANG Yan; LI Yong-mei; ZHANG Huai-zhi; ZHANG Wei-li

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The Soil Factors Influencing Phosphorus Loss by Field Surface Runoff in Dianchi Watershed

更新时间：2024-11-07

- The Soil Factors Influencing Phosphorus Loss by Field Surface Runoff in Dianchi Watershed
- Vol. 25, Issue 4, (2011)
- 作者机构：
  
  1. 云南农业大学资源与环境学院
  2. 中国农业科学院农业资源与农业区划研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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ZHANG Yan, LI Yong-mei, ZHANG Huai-zhi, et al. The Soil Factors Influencing Phosphorus Loss by Field Surface Runoff in Dianchi Watershed[J]. 2011, 25(4).
DOI：

ZHANG Yan, LI Yong-mei, ZHANG Huai-zhi, et al. The Soil Factors Influencing Phosphorus Loss by Field Surface Runoff in Dianchi Watershed[J]. 2011, 25(4). DOI：

摘要

试验采用田间原位模拟降雨并结合多元线性回归(逐步)的统计分析方法

分别在滇池流域的6个点位研究旱季和雨季农田土壤的理化性质与径流中磷素流失的关系。结果表明:在旱季和雨季进行的田间原位模拟降雨的平均产流起始时间、产流历时、产流量和平均出水速度均无显著的差异。旱季径流的产流强度曲线比雨季波动大;2次试验中

质地为砂质粘壤土的大渔乡元宝村(C-2)点的初始产流强度和平均产流强度均最大。土壤孔隙度与降雨平均入渗率呈显著正相关关系(R=0.332*

n=12);0-5 cm的土壤速效磷(Olsen-P)含量与地表径流中总磷(TP)、水溶性的总磷(DTP)和水溶性正磷酸盐(DRP)及颗粒态磷(PP)的流失量呈极显著的正相关

是影响磷素流失的最重要因子

且0-5 cm土壤有机质含量与径流中TP、DTP和DRP的流失量呈负相关;0-5 cm

5-20 cm的土壤含水量皆与TP、DTP、DRP和PP流失量呈负相关;土壤pH与DTP流失量呈正相关

与颗粒态磷(PP)流失量呈负相关。

Abstract

An experiment under simulated rainfall in situ was carried out to find the relationship between the properties of soil and P loss in surface runoff at 6 sites by SPSS stepwise regression analysis method.The results showed that the average initial surface flow

flows lasts

amounts of runoff and rate of flow were not obviously differences.The fluctuation of runoff intensity in dry season is larger than rainy season.The initial and average runoff intensity of C-2

which is sandy clay loam(Yuanbao village

Dayu to...

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