alkali soil

alkali soil
soil that has either a high degree of alkalinity or a high percentage of sodium, or both, so that most crops cannot be grown in it profitably.
[1910-15]

* * *


Universalium. 2010.

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  • Alkali soil — Any one of various soils found in arid and semiarid regions, containing an unusual amount of soluble mineral salts which effloresce in the form of a powder or crust (usually white) in dry weather following rains or irrigation. The basis of these… …   The Collaborative International Dictionary of English

  • alkali soil — soil that has either a high degree of alkalinity or a high percentage of sodium, or both, so that most crops cannot be grown in it profitably. [1910 15] * * * alkali soil, soil containing soluble mineral salts, in quantities sufficient to… …   Useful english dictionary

  • alkali soil — /ˌælkəlaɪ ˈsɔɪl/ (say .alkuhluy soyl) noun any of various soils in poorly drained or arid regions, containing a large amount of soluble mineral salts (chiefly of sodium) which in dry weather appear on the surface as a (usually white) crust or… …  

  • Alkali soils — Alkali, or alkaline, soils are clay soils with a relatively high exchangeable sodium percentage, a relative high pH (> 9), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 m. depth (in… …   Wikipedia

  • alkali land — alkali land, = alkali soil. (Cf. ↑alkali soil) …   Useful english dictionary

  • alkali soils — soil located in arid regions which contains minerals …   English contemporary dictionary

  • Alkali — In chemistry, an alkali (from Arabic: Al Qaly القلي, القالي ) is a basic, ionic salt of an alkali metal or alkaline earth metal element. Alkalis are best known for being bases (compounds with pH greater than 7) that dissolve in water. The… …   Wikipedia

  • black alkali — Alkali soil Alkali soil Any one of various soils found in arid and semiarid regions, containing an unusual amount of soluble mineral salts which effloresce in the form of a powder or crust (usually white) in dry weather following rains or… …   The Collaborative International Dictionary of English

  • white alkali — Alkali soil Alkali soil Any one of various soils found in arid and semiarid regions, containing an unusual amount of soluble mineral salts which effloresce in the form of a powder or crust (usually white) in dry weather following rains or… …   The Collaborative International Dictionary of English

  • alkali flat — noun : a level area in an arid or semiarid region that is encrusted with salt or alkali (as the dried bed of an evaporated pond or lake) * * * a level area, as a dry lake bed, in which evaporation has concentrated alkali minerals, as sodium… …   Useful english dictionary

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