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1 влажность почвы
влажность почвы
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
soil moisture
1) Water stored in soils.
2) One of the most important elements involved in pedological processes and plant growth. There are three basic forms:
a) water adhering in thin films by molecular attraction to the surface of soil particles and not available for plants is termed hygroscopic water.
b) Water forming thicker films and occupying the smaller pore spaces is termed capillary water. Since it is held against the force of gravity it is permanently available for plant growth and it is this type of soil water which contains plant nutrients in solution.
c) Water in excess of hygroscopic and capillary water is termed gravitational water, which is of a transitory nature because it flows away under the influence of gravity. When the excess has drained away the amount of water retained in the soil is termed its field capacity, when some of its pore spaces are still free of water.
(Source: LANDY / DUNSTE)
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Русско-немецкий словарь нормативно-технической терминологии > влажность почвы
См. также в других словарях:
field moisture capacity — noun : field capacity … Useful english dictionary
field capacity — ; field moisture capacity See specific retention … Lexicon of Cave and Karst Terminology
normal moisture capacity — noun : field capacity … Useful english dictionary
field capacity — noun the maximum amount of water that a particular soil can hold • Hypernyms: ↑volume unit, ↑capacity unit, ↑capacity measure, ↑cubage unit, ↑cubic measure, ↑cubic content unit, ↑displacement unit, ↑cubature un … Useful english dictionary
Field capacity — is the amount of soil moisture or water content held in soil after excess water has drained away and the rate of downward movement has materially decreased, which usually takes place within 2–3 days after a rain or irrigation in pervious soils of … Wikipedia
Moisture equivalent — is proposed by Lyman Briggs and McLane (1910) as a measure of field capacity for fine textured soil materials. Moisture equivalent is defined as the percentage of water which a soil can retain in opposition to a centrifugal force 1000 times that… … Wikipedia
capacity, field — , field carrying; capillary. Soil moisture retained by capillarity and not removable by gravity drainage [16]. Synonym: specific retention … Lexicon of Cave and Karst Terminology
moisture deficiency — The quantity of water required to restore moisture to field capacity in a desiccated soil [16] … Lexicon of Cave and Karst Terminology
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