soilbag土工袋soiln.土地；土壤；污物，粪便v.弄污soil moisture character土壤水分特征soil quality indicators评价指标Soil diagnostic horizon土壤诊断层soiland water resources水土资源soil structural quality土壤结构质量Soil biochemical effect土壤生化作用soiled bedding/linen脏了的床上用品/日用织品soil strength parameter土强度参数soil-squeezing effect挤土效应soil texture transition可蚀性K值