In this paper , based on the tracing field infiltration tests into frozen and unfrozen soils with three species of soil texture and eight species of soil structure in seasonal frozen soil regions during three overwinters , the basic infiltration characteristics , reduction infiltration mechanism and major factors influencing soil infiltration characteristics are studied all - sidedly and systematically . to master frozen soil infiltration characteristics and supply scientific directions for winter irrigation 本文基于季节性冻土区田间三种质地、八种结构历时三个越冬期的冻土、非冻土入渗跟踪试验，全面、系统地研究了冻融土壤的入渗特性、阻渗机理和影响冻融土壤入渗特性的主要因素，掌握冻融条件下土壤水分入渗特性，为冬灌及农业节水灌溉提供科学依据。
