- 업종: Earth science
- Number of terms: 26251
- Number of blossaries: 0
- Company Profile:
An international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in ...
The electrical potential at the surface of the shear plane between immobile liquid attached to a charged particle and mobile liquid further from the particle surface.
Industry:Earth science
The process of introducing various ammonium sources into other fertilizer sources forming ammoniated compounds. Ammonium polyphosphates and ammoniated superphosphate are ammoniated compounds.
Industry:Earth science
The ratio, at a given temperature, of the water vapor pressure to the saturated water vapor pressure; used as a measure of water potential by meteorologists.
Industry:Earth science
The distribution of a chemical between soil and water.
Industry:Earth science
The volume of water entering a specified cross-sectional area of soil per unit time.
Industry:Earth science
The systematic arrangement of soils into groups or categories on the basis of their characteristics. Broad groupings are made on the basis of general characteristics and subdivisions on the basis of more detailed differences in specific properties. The USDA soil classification system of soil taxonomy was adapted for use in publications by the National Cooperative Soil Survey on 1 Jan. 1965. Abridged statements of diagnostic features, orders, and suborders are listed alphabetically.
Industry:Earth science
Vertisols that are saturated with water for periods long enough to limit their use for most crops other than pasture and woodland unless they are artificially drained. Aquerts have in one or more horizons between 40 and 50 cm from the surface, aquic conditions for some time in most years and chromas of two or less in 50 percent of the pedon or evidence of active ferrous iron.
Industry:Earth science
The degree or intensity of alkalinity in a soil, expressed by a value >7. 0 for the soil pH.
Industry:Earth science
That portion of a chemical compound or element that can be taken up readily by living organisms.
Industry:Earth science
The ability of solid phase soil materials to resist changes in ion concentration in the solution phase. Can be expressed as ∂Cs/∂Cl where Cs represents the concentration of ions on the solid phase in equilibrium with Cl, the concentration of ions in the solution phase. Includes pH buffering as well as the buffering of other ionic and molecular components.
Industry:Earth science
