humusn.腐殖质
humus podzolic soil腐殖质灰化土
humus fractionation腐殖质分级
humus-clay complex腐殖质粘土复合体
humus eluvial horizo腐殖淋溶层
humus siallitization腐殖质粘土化过程
humus carbonate soil黑色石灰土
humus carbonatic soil腐殖质碳酸盐土
humus eluvial horizon腐殖淋溶层
humus organic material腐熟有机物
humus enriched horizon腐殖质富集层