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Soil science
That science dealing with soils as a natural resource on the surface of the earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils per se; and these properties in relation to the use and management of soils.
土壤学的贡献者
Soil science
spodic 地平线
地球科学; 土壤学
非晶材料组成的有机碳与或无铁和铝的 illuvial 积累的特点是矿物土地平线。Spodic 地平线有一定最小厚度和可萃取碳加铁加铝在相对于其内容的粘土的最小数量。 ...