Simulace dynamiky půdní vlhkosti těžkých půd s ohledem na odběr vody kořenovou zónou rostlin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F06%3A01125034" target="_blank" >RIV/68407700:21110/06:01125034 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00027049:_____/06:#0000105

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Simulation of Soil Water Dynamics in Structured Heavy Soils with respect to Root Water Uptake

Popis výsledku v původním jazyce

Moisture uptake by root system affects the water regime in soil profile. In heavy soils with preferential pathways water with fertilizers penetrates into significant depth and often reaches an under-root zone or even the groundwater level. This may happen in summer periods with short but heavy precipitation events, when water flows through desiccated cracks. Effects of the drip irrigation and fertilization of potatoes have been monitored at the experimental site. Based on the measured data simulation ofthe water regime of the soil profile considering an impact of the preferential flow and the root water uptake was done. The dual-permeability simulation model S_1D_Dual was used. Soil hydraulic parameters were inversely determined. The results demonstrate that during rainfall events the water reaches significant depths via preferential pathways. The effect of the root zone is dominant during dry periods, when capillary water uptake from the layers below roots becomes important.

Název v anglickém jazyce

Simulation of Soil Water Dynamics in Structured Heavy Soils with respect to Root Water Uptake

Popis výsledku anglicky

Moisture uptake by root system affects the water regime in soil profile. In heavy soils with preferential pathways water with fertilizers penetrates into significant depth and often reaches an under-root zone or even the groundwater level. This may happen in summer periods with short but heavy precipitation events, when water flows through desiccated cracks. Effects of the drip irrigation and fertilization of potatoes have been monitored at the experimental site. Based on the measured data simulation ofthe water regime of the soil profile considering an impact of the preferential flow and the root water uptake was done. The dual-permeability simulation model S_1D_Dual was used. Soil hydraulic parameters were inversely determined. The results demonstrate that during rainfall events the water reaches significant depths via preferential pathways. The effect of the root zone is dominant during dry periods, when capillary water uptake from the layers below roots becomes important.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2006

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Biologia

ISSN

0006-3088

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

Suppl. 19

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

4

Strana od-do

320-323

Kód UT WoS článku

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EID výsledku v databázi Scopus

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