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砂姜黑土
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砂姜黑土
Encyclopedia
农学
砂姜黑土
释
Lime concretion black soil
砂姜黑土
发育在第四纪河湖相沉积物上的上部为暗色土层、下部为砂姜层的土壤。在中国土壤分类暂行草案(1978)中和中国第二次土壤普查(1988)时,列为半水成土纲砂姜黑土土类;在中国土类系统分类(1991)中,列为潮湿土土纲正常潮湿土亚纲砂姜黑土土类;在中国土壤系统分类(2001)中,划分成钙积潮湿变性土[注]和砂姜潮湿雏形土[注];在美国土壤系统分类和世界土壤资源参比基础(2014)中,部分相当于变性土[注]。曾称砂姜土、潜育褐土和青黑土。
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product of knots
product of languages
product of lattices
product of linear forms
product of manifolds
product of mappings
product of matrices
product of measurable spaces
product of measure
product of measure spaces
product of modules
product of nearness spaces
product of numbers
product of objects
product of operators
product of ordinal numbers
product of paths
product of permutation groups
product of points
product of polynomials
product of potencies
product of relations
product of representations
product of residue classes
product of rings
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