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黑钙土
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黑钙土
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黑钙土
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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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secondary star
secondary station
secondary steel
secondary stress
secondary stress field
secondary structure
secondary succession
secondary support
secondary surface
secondary tail
secondary target
secondary thermometer
secondary tillage equipment
secondary tungsten resource
secondary unit
secondary valence
secondary valence; auxiliary valence
secondary valency
secondary vegetation
secondary vocational education
secondary wall
secondary water
secondary water supply
secondary wave
secondary wavelet
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