首页 | 本学科首页   官方微博 | 高级检索  
     检索      

PAM对土壤物理性状以及水分分布的影响
引用本文:韩凤朋,郑纪勇,李占斌,张兴昌.PAM对土壤物理性状以及水分分布的影响[J].农业工程学报,2010,26(4):70-74.
作者姓名:韩凤朋  郑纪勇  李占斌  张兴昌
作者单位:1. 西安理工大学水利水电学院,西安,710048;西北农林科技大学中国科学院教育部水土保持与生态环境研究中心黄土高原土壤侵蚀与旱地农业国家重点实验室,杨凌,712100
2. 西北农林科技大学中国科学院教育部水土保持与生态环境研究中心黄土高原土壤侵蚀与旱地农业国家重点实验室,杨凌,712100;西北农林科技大学资源与环境学院,杨凌,712100
3. 西安理工大学水利水电学院,西安,710048
基金项目:国家973计划(2007CB106803);“西部之光”人才培养计划(2006YB04);教育部科研创新团队支持计划
摘    要:为了研究聚丙烯酰胺(PAM)在黄土高原自然条件下对土壤物理性状和水分分布的影响,采用表面撒施的方法研究了12个不同处理小区的土壤体积质量、饱和导水率以及水分分布的变化。结果表明,在0~2 g/m2范围内添加PAM可以减小土壤体积质量增加土壤饱和导水率,但用量超过2 g/m2土壤体积质量开始增加。饱和导水率开始降低。在0~ 3 g/m2均可用二次曲线进行描述,相关系数达到95%以上。表层土壤含水量随着PAM添加量的增加而升高,20~60 cm土层土壤含水率随着PAM用量的增加出现交叉现象,60~100 cm土层随着PAM用量的增加而增加,在2 g/m2用量时达到最高,再增加PAM用量土壤含水率反而有降低趋势。100 cm以下土层变化不明显。该研究为探明PAM在黄土高原地区的适应性和大规模应用提供依据。

关 键 词:聚丙烯酰胺,土壤,物理性质,饱和导水率,水分分布
收稿时间:2008/8/18 0:00:00
修稿时间:2009/11/10 0:00:00

Effect of PAM on soil physical properties and water distribution
Han Fengpeng,Zheng Jiyong,Li Zhanbin,Zhang Xingchang.Effect of PAM on soil physical properties and water distribution[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(4):70-74.
Authors:Han Fengpeng  Zheng Jiyong  Li Zhanbin  Zhang Xingchang
Institution:1.Institute of Water Resources and Hydro-electric Engineering/a>;Xi'an University of Technology/a>;Xi'an 712100/a>;China/a>;2.State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau/a>;Institute of Soil and Water Conservation/a>;Chinese Academy of Sciences/a>;Northwest Agriculture and Forestry University/a>;Yangling 712100/a>;3.College of Resources and Environment/a>;China
Abstract:In order to study the impact of applied polyacrylamide (PAM) on the soil physics and the distribution of soil water content under the natural condition, an experiment and research on eleven various PAM amounts plots of Alfalfa and one bare plot have been studied. The results showed that during the 0-2 g/m2 of PAM amount, the bulk density decreased with increasing amounts of PAM but the saturated hydraulic conductivity increased. The bulk density increased and the saturated hydraulic conductivity decreased when the concentration of PAM was higher than 2 g/m2. During the range of 0-3 g/m2 the changes between the bulk density, saturated hydraulic conductivity and concentration of PAM could be modeled by quadratic equation. The surface soil moisture increased with the increasing amounts of PAM. There were no significant difference about the soil moisture between 20-60 cm and 100-200 cm depth, while the soil moisture increased in 60-100 cm with the increasing amounts of PAM in the range of 0-2 g/m2 but decreased when the concentration of PAM was higher than 2 g/m2.
Keywords:polyacrylamide (PAM)  soil  physical properties  saturated hydraulic conductivity  water distribution
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《农业工程学报》浏览原始摘要信息
点击此处可从《农业工程学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号