| 释义 |
Ultisol Soil Sci.|ˈʌltɪsɒl|
[f. ultimate a. + -sol.]
A type of highly weathered, leached, red-yellow or red acid soil marked by a clay-rich B horizon and found in warm, humid climates.
1960Soil Classification: 7th Approximation (U.S. Dept. Agric.) xv. 226/1 The Ultisols include most soils that have been called Red-Yellow Podzolic soils, Reddish-Brown Lateritic soils, and Rubrozems in the United States. 1972J. G. Cruickshank Soil Geogr. iv. 132 In their geographical distribution, the Ultisols—otherwise known as red-yellow podsolics or ferruginous soils—merge into grassland soils on their arid margins and into Alfisols and Inceptisols (brown earths) on their cool humid margins (eg, in North America). |