Jag C162对黄土坡面降雨入渗的调控效应研究

焦念; 王占礼; 刘俊娥

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Jag C162对黄土坡面降雨入渗的调控效应研究

试验研究

- Jag C162对黄土坡面降雨入渗的调控效应研究
- Regulating Effect of Jag C162 Application on Infiltration on Loess Slope
- 水土保持通报 2014年33卷第1期页码：25-30
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 陕西杨凌,712100
  2. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  3. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目"黄土坡面细沟侵蚀关键参数及其耦合关系试验研究"(41171227);国家自然科学基金项目"黄土坡面细沟侵蚀动力学过程组合小区试验研究"(40971172);中国科学院重点项目"近百年黄土高原侵蚀环境与水沙变化"(KZZD-EW-04-03)
- DOI：
  中图分类号：
- 纸质出版：2014
- 稿件说明：
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焦念, 王占礼, 刘俊娥. Jag C162对黄土坡面降雨入渗的调控效应研究[J]. 水土保持通报, 2014,33(1):25-30.

JIAO Nian, WANG Zhan-li, LIU Jun-e. Regulating Effect of Jag C162 Application on Infiltration on Loess Slope[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 25-30.
焦念, 王占礼, 刘俊娥. Jag C162对黄土坡面降雨入渗的调控效应研究[J]. 水土保持通报, 2014,33(1):25-30. DOI：

JIAO Nian, WANG Zhan-li, LIU Jun-e. Regulating Effect of Jag C162 Application on Infiltration on Loess Slope[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 25-30. DOI：

摘要

在土壤中添加高分子化合物是一种新兴的水土保持措施

阐明其对水土流失的影响可为黄土坡面水土流失治理及其措施选择提供科学依据。采用人工模拟降雨试验

研究新化学材料Jag C162对黄土坡面降雨入渗的调控效应。主要结果有:(1)撒施不同剂量Jag C162后

随着降雨时间的增加

入渗率呈减少的趋势

撒施Jag C162的入渗率减小速率均小于裸土;降雨过程中裸土达到了稳渗阶段

而撒施Jag C162的入渗率没有达到稳定状态;初始产流的时间也相应的推迟。(2)同坡度不同雨强和同雨强不同坡度下

撒施Jag C162后

入渗率显著提高。随着雨强和坡度的增大

裸土的稳定入渗率增加

3种不同撒施剂量下的平均入渗率减小。(3)撒施Jag C162的入渗量明显高于裸土的入渗量

在不同剂量下

入渗量随雨强的增加而呈现递增变化总趋势;入渗量随坡度的增加而减小。(4)撒施Jag C162可增加入渗率

减少地表径流和土壤侵蚀。

Abstract

It is an emerging measure of soil and water conservation to add polymers in soil. Clarifying its effects on soil erosion can provide a scientific basis for controlling soil erosion and selecting measures on loess slope. A simulated rainfall experiment was conducted to study the regulating effect of new chemical materials Jag C162 on infiltration on loess slope. Results showed that:(1) After dry spreading Jag C162

infiltration rate showed a decreasing trend with increasing rainfall time

whose decrease rate was less than bare soil. During rainfall

infiltration into bare soil reached a steady infiltration stage

while infiltration rate did not reach a steady state after dry spreading Jag C162. Initial runoff time was postponed correspondingly. (2) For the slope with different rainfall intensities and the rainfall intensity with different slopes

infiltration rate had significantly increased after dry spreading Jag C162. The stable infiltration rate of bare soil and average infiltration rate after dry spreading showed an increasing trend with increasing rainfall intensity and decreased with increasing slope. (3) Infiltration capacity for dry spreading Jag C162 was significantly higher than bare soil. With different doses

the infiltration capacity presented a general incremental trend with rainfall intensity increased

and infiltration capacity was decreased with slope increasing. (4) After dry spreading Jag C162

infiltration rate was increased and surface runoff and soil erosion were reduced.

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references

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