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Learn about the classification of soils in the United States according to the Soil Orders outlined by USDA in 1998. This brief overview provides insight into the diversity and characteristics of different soil types.
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美国土壤系统分类单元——土纲简介 (USDA,1998)
上述资料引自: • USDA, Keys to Soil Taxonomy, Eighth Edition, 1998. • Malcolm E Sumner,《Handbook of Soil Science》, • Boca Raton, CRC Press, 2000.