Soil water measurement methods 1st part: tensiometer
2007
Zupanc, V. | Pintar, M.
英语. Soil water status is extremely important and necessary for successful work and reliable results in research in agronomy and environmental sciences as well as in practical applications in plant production. There are direct and indirect methods for soil water measurements. Measuring with tensiometers is an indirect method, based on water matric potential measurements. Tensiometers consist of porous ceramic cup connected to a vacuum gauge through a rigid water-filled tube. Working interval is between 80 _ 85 kPa (theoretically up to 100 kPa), which makes them useful for irrigation scheduling, but unsuitable for water matric potential measurements in dry soils.
显示更多 [+] 显示较少 [-]斯洛文尼亚语. Znanje o količini vode v tleh ali v substratu je pri raziskovalnem delu na področju agronomskih in okoljskih znanosti kot tudi v praksi pri rastlinski pridelavi nujno potrebno za uspe_no delo in zanesljive rezultate. Za merjenje vode v tleh poznamo direktne in indirektne metode določanja vsebnosti vode. Merjenje količine vode v tleh s pomočjo tenziometra spada med posredne metode pri kateri merimo matrični potencial vode. Tenziometer je sestavljen iz porozne keramične kapice, povezane z manometrom preko največkrat rigidne cevke napolnjene z vodo. Tenziometri delujejo na območju okoli 80 - 85 kPa (teoretično do 100 kPa). Uporabni so za uravnavanje namakanja, ne pa tudi za za meritve matričnega potenciala vode v zelo suhih tleh.
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