细颗粒泥沙絮凝-分散在水土保持中的应用  

Applications of Fine Sediment Flocculation and Deflocculation in Soil and Water Conservation

作　　者：陈洪松[1] 邵明安[1] 

机构地区：[1]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

出　　处：《灌溉排水》2000年第4期13-16,共4页Irrigation and Drainage

基　　金：中国科学院知识创新工程项目 !(KZCX2 -4 11);国家自然科学基金 !(5 98790 2 6 )

摘　　要：简要介绍了细颗粒泥沙絮凝 -分散对土壤渗透性、土壤可蚀性以及污染物迁移的影响 ,以期有效防治水土流失和由此带来的非点源污染。Water resources shortage is a very important factor to obstacle sustainable development of agriculture in the arid and semiarid regions. Many researchers are making their all efforts to search ways to improve soil penetrability. One of the measures is to spread amendments on soil to flocculate fine sediment, increase soil penetrability, and decrease soil and water loss. In this paper, the effects of fine sediment flocculation and deflocculation on soil penetrability, soil erodibility and contaminants transport are discussed, which is helpful to control effectively soil and water loss and ease non source point pollution.

关 键 词：细颗粒泥沙 絮凝-分散 水土保持 土壤渗透性 

分 类 号：S157.1[农业科学—土壤学]