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土壤形态
释义
土壤形态
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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poem theory
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Poem Written for Members of the Staff of the Great General Assailing the West, Who send me off at Zhiyanghou
POE=pressure pneumatically operated equipment
Poet and Death
poetic achievement requires erudition
Poetical Jottings on the Coral Crook
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Poetic Justice: The Literary Imagination and Public Life
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poetic realism film
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poetics of cinema
Poetics of Mythology
Poetic Talks by Li Xisheng
Poetic Talks in My Secluded House in Xiangyang
poetic wisdom
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