Metóda určenia režimu odberu vody z pôdy rastlinami pre potreby produkcie biomasy

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Title:Metóda určenia režimu odberu vody z pôdy rastlinami pre potreby produkcie biomasy
Creators:
Havrila, Ján; Ústav hydrológie, Slovenská akadémia vied, Račianská 75, 831 02 Bratislava 3, Slovensko
Novák, Viliam; novak at uh dot savba dot sk; Ústav hydrológie, Slovenská akadémia vied, Račianská 75, 831 02 Bratislava 3, Slovensko
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 54, 1, pp. 15-25
Uncontrolled Keywords:Soil Water Regime, Transpiration, Biomass Production, Yield, Mathematical Modeling

Abstract

The design and construction of amelioration systems (irrigation, drainage) should precede diagnosis of soil water regime (SWR), to estimate its need and design parameters. It means, it is needed to calculate cyclic course of so called soil water regime characteristics. As soil water regime characteristic can be used soil moisture of the soil root zone at some depth, soil water potential at certain depth, soil water content of the root zone, as they are affected by evapotranspiration and its components. Seasonal courses of soil water regime characteristics differ, therefore it is necessary to estimate statistical parameters of SWR characteristics during relatively long period of minimum twenty seasons. This paper presents method of plant transpiration regime assessment, based on seasonal canopy transpiration series, calculated retrospectively by mathematical model HYDRUS-ET. Novelty of this approach is using of the empirical relationship between the seasonal transpiration totals and biomass production (yield). Cumulative frequency distribution curve of seasonal transpiration was chosen as a basic characteristic. This approach allows to estimate cumulative frequency curves of yields and cumulative frequency of potential yields. The difference is cumulative frequency of yields optimized by irrigation system. This allows to transform expected yields increase to investment and operational price and to compare expenditure to profit. This approach is illustrated on loess soil with maize canopy during 31 seasons.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Metóda určenia režimu odberu vody z pôdy rastlinami pre potreby produkcie biomasy
Translated title:Method of plant transpiration regime assessment to estimate biomass production
Creators:
Havrila, Ján; Ústav hydrológie, Slovenská akadémia vied, Račianská 75, 831 02 Bratislava 3, Slovensko
Novák, Viliam; novak at uh dot savba dot sk; Ústav hydrológie, Slovenská akadémia vied, Račianská 75, 831 02 Bratislava 3, Slovensko
Uncontrolled Keywords:Soil Water Regime, Transpiration, Biomass Production, Yield, Mathematical Modeling
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:54
Number:1
Page Range:pp. 15-25
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:5902
Item Type:Article
Deposited On:08 Jun 2010 16:48
Last Modified:08 Jun 2010 14:48

Citation

Havrila, Ján; Novák, Viliam (2006) Metóda určenia režimu odberu vody z pôdy rastlinami pre potreby produkcie biomasy. Journal of Hydrology and Hydromechanics, 54 (1). pp. 15-25. ISSN 0042-790X

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