soiltex土壤酸度试剂soiln.土地；土壤；污物，粪便v.弄污soil conservation extension土壤保持推广soil fertility adaptabilitY土壤肥力适宜性Soil infiltrating technique土壤渗滤技术soil ripening and improving土壤熟化改良Soil microbiology diversity土壤微生物多样性soil salt-extract acidity土壤盐浸出液酸度soil disinfection apparatus土壤消毒装置soil natural electric field土壤自然电场soil-climate relationship土壤气候相关性soil environment protection土壤环境保护