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黑钙土
释义
黑钙土
Encyclopedia
农学
黑钙土
释
Chernozem
黑钙土
温带半干润气候地区草原植被条件下形成的,表层具有深厚腐殖质层、下部具有钙积层或石灰反应的土壤。在中国土壤系统分类为均腐土纲,半干润均腐土亚纲;在美国土壤系统分类中,黑钙土属于软土纲的多种类型:冷冻性冷凉软土、黏化冷冻软土、钙化冷凉软土、黏化半干润软土、弱发育半干润软土、钙质半干润软土等。
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point of application of a vector
point of approximate continuity
point of approximate discontinuity
point of attraction
point-of-care testing
point of cessation
point of closure
point of condensation
point of congruence
point of contact
point of continuity
point of contrary flexure
point of control
point of convergence
point of density
point of determinacy
point of discontinuity
point of dispersion
point of divergence
point of division
point of double inflexion
point of emanation
point of fracture
point of geological observation
point of higher order
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