acid humus soil

酸性腐殖质土

English-Chinese Dictionary of Agriculture (英汉农业大词典). 2013.

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  • Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …   Wikipedia

  • soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… …   Universalium

  • Humus — (Origin: 1790–1800; < Latin : earth, ground [ humus. Dictionary.com Unabridged (v 1.1). Random House, Inc. 23 Sep. 2008. .] ) is the organic material in soil lending it a dark brown or black colouration. In soil science, humus refers to any… …   Wikipedia

  • Soil life — or soil biota is a collective term for all the organisms living within the soil.OverviewIn a balanced soil, plants grow in an active and vibrant environment. The mineral content of the soil and its physical structure are important for their well… …   Wikipedia

  • Humic acid — is one of the major components of humic substances [http://www.ihss.gatech.edu/whatarehs.html] which are dark brown and major constituents of soil organic matter humus that contributes to soil chemical and physical quality and are also precursors …   Wikipedia

  • humic acid — a brown, melanin tinted mixture of polymers, found in lignite, peat, and soils, where it acts as a cation exchange agent: used in drilling fluids and inks. [1835 45] * * * ▪ chemistry       one of two classes of natural acidic organic polymer… …   Universalium

  • fulvic acid — ▪ chemical compound       one of two classes of natural acidic organic polymer that can be extracted from humus found in soil, sediment, or aquatic environments. Its name derives from Latin fulvus, indicating its yellow colour. This organic… …   Universalium

  • FAO Soil Classification System — ▪ Table Soil classification system of the Food and Agriculture Organization   soil group  abbrevi ation defining  characteristics name derivation percent of Earth s land area See as table: Soils defined by parent material   Andosol AN volcanic… …   Universalium

  • podzolic soil — ▪ pedology podzolic also spelled  Podsolic,  also called  Lessivé Soil,         soil usually forming in a broadleaf forest and characterized by moderate leaching, which produces an accumulation of clay and, to some degree, iron that have been… …   Universalium

  • brown podzolic soil — noun : any of a group of acid zonal soils developed in temperature or cool temperate humid regions under deciduous or mixed deciduous and coniferous forest and characterized by dark brown humus mineral soil covered with a thin mat of partly… …   Useful english dictionary

  • peat soil — noun : a soil consisting largley of peat and consequently rich in humus and of acid reaction …   Useful english dictionary

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