- alkali soil
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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]
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Universalium. 2010.
alkali soil
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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
