GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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07:39 Nov 14, 2011 |
Serbo-Croat to English translations [PRO] Tech/Engineering - Agriculture / Pedology | |||||||
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| Selected response from: proanglica (X) Local time: 00:46 | ||||||
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Summary of answers provided | ||||
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3 | (maximum) plant available capacity/content |
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(maximum) plant available capacity/content Explanation: Fiziološki aktivna ili bilju pristupačna voda (FAv) je prema sledećim izrazima: Fav = Pkv - Tv (Nv) Fav = Kv - Tv (Nv) http://www.scribd.com/doc/25065459/PEDOLOGIJA-skripta ............................................................................................ The maximum water available is known as the Plant Available Water Capacity (PAWC). http://www.apsim.info/Wiki/public/Upload/ApSoil/SoilMatters/... ............................................................................................ -------------------------------------------------- Note added at 1 day4 hrs (2011-11-15 12:05:28 GMT) -------------------------------------------------- U hidropedološkoj praksi najčešće se upotrebljavaju sljedeće konstante: Kv – kapacitet tla za vodu odgovara tenziji vlage od 0,1-0,5 bara ili -100 do -500 cm stupca vode ili pF vrijednosti 1,7 do 2,8 (pF vrijednost predstavlja log negativnog tlaka – tenzije izraženog u cm stupca vode). Najčešće se ova konstanta određuje kod 0,33 bara ili - 330 cm stupca vode ili pF vrijednosti 2,54. Nv = Tv – nepokretna (mrtva) voda ili točka venuća odgovara tenziji vlage 15 bara ili -1500 cm stupca vode ili pF vrijednosti 4,2 LKt – lentokapilarna točka ili donja granica optimalne vlažnosti tla odgovara tenziji vlage od 6,25 bara ili -6250 cm stupca vode ili pF vrijednosti 3,8 FAv – fiziološki aktivna vlaga, određuje se iz razlike kapacitet tla za vodu (Kv) i točka venuća (Tv) prema formuli Fav = Kv – Tv -------------------------------------------------- Note added at 1 day4 hrs (2011-11-15 12:09:01 GMT) -------------------------------------------------- The maximum amount of water that a given soil can retain is called field capacity (rekla bih da je to Kv), whereas a soil so dry that plants cannot liberate the remaining moisture from the soil particles is said to be at wilting point (to bi bilo ovo Tv). Available water is that which the plants can utilise from the soil within the range of field capacity and wilting point (FAv). Vise o tome: http://en.wikipedia.org/wiki/Soil_water_(retention) Reference: http://www.pfos.hr/~dsego/ispitna_literatura/vjezbe/Teoretsk... |
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