About EGUCHI Sadao
About National Inst. for Agro-Environmental Sci., Tsukuba, JPN
About SAWAMOTO Masae
About National Inst. for Agro-Environmental Sci., Tsukuba, JPN
About SHIBA Masahiko
About National Inst. for Agro-Environmental Sci., Tsukuba, JPN
About Soil Science and Plant Nutrition
About hydromorphic soil
About stratum
About aquifer
About permeable layer
About soil structure
About hydraulic conductivity
About spatial distribution
About soil horizon
About boundary
About Ibaraki prefecture
About clay soil
About clay layer
About Soil physics
About 常総
About 粘土
About コーン貫入試験
About 圃場
About スケール
About 滞水層
About 境界