摘要
通过层施保水剂变水头水分入渗试验,研究了保水剂层施用量对水分入渗特性的影响。结果表明:变水头条件下,层施不同保水剂用量的湿润锋运移距离和累计入渗量随着入渗时间的延长而增大,层施保水剂用量越大,湿润锋运移距离运移距离和累计入渗量越小,阻渗作用越强;保水剂大量吸水,保水剂施用范围附近土壤含水率明显增大,成为土壤储水的"水库"。
Through the infiltration experiment of water-retaining agent being applied by layer under varying head,the effect of water-retaining agent content on the water infiltration characteristics is studied.The results show that the wetting front and total infiltration volume increased with infiltration time and decreased with water-retaining agent content;because the water-retaining agent absorbs a lot of water,the porcentage of soil moisture content near the water-retaining agent increases obviously and the water-retaining agent becomes ＂a reservoir＂ for water storage.
出处
《人民黄河》
CAS
北大核心
2011年第7期99-100,共2页
Yellow River
基金
河北省自然科学基金资助项目(C2011402042
D2009000827)
水文水资源与水利工程国家重点实验室开放基金资助项目(2009490211)
河北省科学技术研究与发展计划项目(09200805D)
河北工程大学博士基金资助项目
关键词
保水剂
阻渗作用
湿润锋
土壤含水率
water-retaining agent
anti-infiltration
the wetting front
percentage of soil moisture content
