soil EC土壤电导率soiln.土地；土壤；污物，粪便v.弄污soil bearing capacity土体承载力soil respiration rate土壤呼吸速率soil extrusion effect挤土效应soil enzymes activity土壤酶活性soil electrochemistry土壤电化学Soil physical factors土壤物理性质soil nailed structure土钉支护soil/rock mixtures土石混合体Soil free hydrocarbon壤中游离烃soil-water recharge土壤水份补充