soil Cr土壤铬soiln.土地；土壤；污物，粪便v.弄污soil-structure interface土与结构物接触面soil pesticide interaction土壤农药相互作用soil degradation diagnosis土壤退化诊断soil anti - scourabifity土壤抗冲性soil - aggregate mixture土石混合料soil transmitted helminths土传播蠕虫soil conservation practice土壤保持措施soil-winter wheat system土壤-冬小麦系统soil conservation function土壤保持功能soil environmental science土壤环境学