地表层状土壤透水性能的试验研究  

Field experimental study of infiltration capacity of layer soil

作　　者：郑丽萍[1] 徐海芳[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《水资源与水工程学报》2006年第6期24-26,共3页Journal of Water Resources and Water Engineering

基　　金：中国科学院知识创新工程重要方向性项目(KZCX3-SW-428);中国科学院"引进海外杰出人才"项目;中国科学院禹城综合试验站开放基金课题

摘　　要：以禹城综合试验站典型农田地块为研究对象,测得102 m×52 m面积内地表层与犁底层两个层面不同水平位置的土壤稳渗率f c与入渗经验指数α。结果表明:地表层土壤的透水性能较犁底层土壤透水性能好;两个层面土壤稳渗率f c与入渗经验指数α具有较大的空间变异性,并服从对数正态分布;土壤入渗参数在一定范围内存在着空间相关现象,具有明显的方向性,且稳渗率的各向异性较显著。The surface stratum and the bottom of ploughed stratum of Yucheng experimental station being taken as investigated area, the steady infiltration rate fc and infiltration experiential index a are measured at about ninety-seven points, The results have shown that the surface stratum＇s infiltration capacity was better than the bottom of ploughed stratum＇s. There were large spatial variability of parameters fc and a and the two parameters both obeied the log normal distribution. There existed the spatial correlation phenomenon in a certain range and had obvious direction. The anisotropic of fc was rather obvious.

关 键 词：层状土壤 稳渗率 入渗经验指数 空间相关性 各向异性 

分 类 号：S152.72[农业科学—土壤学]