| 释义 |
B-ho·ri·zon AHD[bēʹhə-rīʹ-zən] D.J.[ˈbiːhəˈraɪzən]K.K.[ˈbihəˈraɪzən]n.（名词）- In ABC soil, the second or subsurface zone of soil made of clay and oxidized materials and organic matter obtained from the A-horizon by leaching; subsoil. Also called zone of accumulation ,zone of illuviation B层，淀积层：在分A、B、C层位土壤中的第二层即表层之下的土壤部分，由粘土、氧化物质和从A层位通过过滤得到的有机物组成；下层土 也作 zone of accumulation,zone of illuviation
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