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soil morphological characteristics
释义
soil morphological characteristics
Encyclopedia
农学
土壤形态
释
soil morphological characteristics
土壤形态
包括颜色、质地、结构、孔隙、紧实度、新生体、侵入体、构造和厚度等的土壤外部特征。土壤形态是土壤发生发展历史的集中反映,也是认识土壤形成和演化历史的关键。因此,土壤形态特征是研究土壤发生和诊断土壤性质的基础,是划分土壤层次和确定土壤分类的重要依据,也是野外土壤描述的主要内容。
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quartering
quarternary structure
quarter period
quarter-square
quarter squares rule
quarter-wave line
quarter wave plate
quarter-wave plate
quartet
quartic
quartic curve
quartic equation
quartic equation with one unknown
quartic extension
quartic graph
quartic manifold
quartic parabola
quartic polynomial
quartic reciprocity theorem
quartic residue
quartics
quartic surface
quartic symmetric graph
quartic symmetry
quartic vertex-transitive graph
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