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单词 soil association
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soil association
soil association n. a group of soils that are related geographically or topographically, esp. ones derived from a common parent material.
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the world > the earth > structure of the earth > constituent materials > earth or soil > [noun] > soil group
series1904
soil series1905
soil class1913
soil group1921
catena1935
soil association1939
1939 Yearbk. Agric. 1938 (U.S. Dept. Agric.) 1163 Soil association, group of soils, with or without common characteristics, geographically associated in an individual pattern.
1952 L. M. Thompson Soils & Soil Fertility vi. 87 The most important grouping of series, in so far as the farmer is concerned, is that of the soil association.
1970 E. M. Bridges World Soils v. 34/1 The Scottish soil scientists have grouped topographically related soils developed on one geological parent material into a soil association.
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