- 行业: Agriculture
- Number of terms: 29629
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Deviation of a sample value from the true value owing to the limited size of sample or wrong sampling.
Industry:Agriculture
The number of sampling units to be measured per plot, e.g., number of plants to be measured per unit area.
Industry:Agriculture
A finite series of observations taken from a population; a portion of a population. Individuals taken from a population to represent it.
Industry:Agriculture
Soil that has been adversely modified for the growth of most crop plants by the presence of soluble salts, exchangeable sodium, or both.
Industry:Agriculture
Ability of a plant to maintain productivity as salinity increases beyond and EC of 4 dS/m.
Industry:Agriculture
The relation between the quantity of dissolved salts carried to an area by irrigation water and the quantity of dissolved salts removed by drainage water.
Industry:Agriculture
Leaves usually become whitish or chlorotic, growth is stunted and uneven, tillering is reduced.
Industry:Agriculture
A soil containing soluble salts with sufficient exchangeable sodium to interfere with the growth of most crop plants. Soil whose saturation extract has an electrical conductivity greater than 4 dS/m, sodium adsorption ratio greater than 15, and pH less than 8.5 (See saline soil and sodic or alkali soil).
Industry:Agriculture
A soil that contains sufficient salt in the root zone to impair plant growth. Its electrical conductivity is greater than 4 dS/m and exchangeable sodium percentage is less than 15.
Industry:Agriculture
