Soilan索伊兰soiln.土地；土壤；污物，粪便v.弄污soil organic earbon有机碳soil - saving dam淤地坝soil microbiomass C微生物量碳Soil-stored water土壤储水soil carbon content土壤磷含量soil-water system土水关系soil binding nature土壤的凝聚性soil-ash reaction土-灰反应soil moisture meter土壤湿度计soil secondary salt土壤次生盐碱化