- problem soils
- pl.экстремальные почвы
Англо-русский словарь промышленной и научной лексики. 2014.
problem soils
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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
Drainage system (agriculture) — An agricultural drainage system is a system by which the water level on or in the soil is controlled to enhance agricultural crop production. Contents 1 Classification 1.1 Surface drainage systems 1.2 Subsurface drainage systems … Wikipedia
Drainage — See also: Storm drain and Stormwater Deep inside a Sydney drain in New South Wales Drainage is the natural or artificial removal of surface and sub surface water from an area. Many agricultural soils need drainage to improv … Wikipedia
Soil chemistry — studies the chemical characteristics of soil. Soil chemistry is affected by mineral composition, organic matter and environmental factors.OverviewUntil the late 1960s, soil chemistry focused primarily on chemical reactions in the soil that… … Wikipedia
Drainage equation — A drainage equation is an equation describing the relation between depth and spacing of parallel subsurface drains, depth of the watertable, depth and hydraulic conductivity of the soils. It is used in drainage design. Parameters in Hooghoudt s… … Wikipedia
Watertable control — is the practice of controlling the water table in agricultural land by subsurface drainage with proper criteria to improve the crop production. Contents 1 Description and definitions 1.1 Purpose 1.2 Optimization 1.3 … Wikipedia
Well drainage — means drainage of agricultural lands by wells. Agricultural land is drained by pumped wells (vertical drainage) to improve the soils by controlling water table levels and soil salinity. Contents 1 Introduction 2 Design 3 Flow to wells 4 … Wikipedia
Drainage research — is the study of agricultural drainage systems and their effects to arrive at optimal system design. Contents 1 Aspects to be covered 2 Systems analysis 3 Crop response processes 4 … Wikipedia
Depression-focused recharge — Also referred to as depression focused groundwater recharge. In hydrology recharge implies replenishing a supply of water held within a geological formation underground. Even surface aquifers are within soil. Contents 1 Recharge 2 Depression… … Wikipedia
Slovenia — /sloh vee nee euh, veen yeuh/, n. a republic in SE Europe: formerly part of Yugoslavia. 1,945,998; 7819 sq. mi. (20,250 sq. km). Cap.: Ljubljana. * * * Slovenia Introduction Slovenia Background: The Slovene lands were part of the Holy Roman… … Universalium
Underpinning — In construction, underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure. Underpinning may be necessary for a variety of reasons: The original foundation is simply not strong or… … Wikipedia
