magistrsko delo
Žiga Korasa (Avtor), Marina Pintar (Mentor), Andreja Sušnik (Komentor)

Povzetek

Natančno in učinkovito namakanje je postalo ključen del pridelovanja hrane. Za doseganje le tega si lahko pomagamo s sistemi podpore odločanju o namakanju. Namen in cilj magistrske naloge je analizirati točnost napovedi o namakanju, ki jih je z uporabo vodnobilančnega modela IRRFIB izdajal ARSO v okviru projekta Natančnost napovedovanja namakanja – TriN (CRP V4-1609). Poskusi, vključeni v projekt in katerih podatke smo obdelali, so trajali od 1. 10. 2016 do 30. 9. 2018 na petih lokacijah (Žalec, Jable, Bilje, Dekani in Gačnik), ki so bile vezane na že obstoječ osnovni namakalni sistem in pripadajočo kulturo. Za vsako lokacijo oz. kulturo (hmelj (Humulus lupulus), krompir (Solanum tuberosum), češnja (Prunus avium), oljka (Olea europaea) in jablana (Malus domestica)) smo primerjali modelirano in merjeno povprečno dnevno vsebnost vode v tleh ter napovedano in dejansko količino namakanja. Z analizo smo ugotavljali dogodke, kjer je bila razlika med napovedanimi in dejanskimi padavinami in dogodke, ko je vsebnost vode presegla kritične vrednosti vode v tleh, točko venenja (TV) in poljsko kapaciteto (PK). Za oceno ujemanja med modelirano in merjeno vsebnostjo vode v tleh smo uporabili statistični kazalnik celotna napaka (RMSE) in opis s Spearmanovim korelacijskim koeficientom. Razlike med modelirano in merjeno povprečno dnevno vsebnostjo vode v tleh so bile od 0 vol. % do 22,3 vol. %, največje pri kapljičnem namakanju oljk v obravnavanem obdobju leta 2017. Razlike med obravnavanima količinama namakanja znašajo od 0 mm do 16,4 mm, največje pri namakanju krompirja z mikro-razpršilci v letu 2018. Vrednost RMSE so bile od 1,2 do 13,7 vol. %. Korelacijski koeficienti so bili od 0,46 do 0,87 (srednja do zelo visoka korelacija) ali pa statistično značilne korelacije ni bilo.

Ključne besede

učinkovito namakanje;natančnost;napovedovanja namakanja;vodnobilančni modeli;IRRFIB;sistemi podpore odločanju o namakanju;SPON;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.09 - Magistrsko delo
Organizacija: UL BF - Biotehniška fakulteta
Založnik: [Ž. Korasa]
UDK: 631.67:626.8:631.43:167.7(043.2)
COBISS: 149694211 Povezava se bo odprla v novem oknu
Št. ogledov: 62
Št. prenosov: 11
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Analysis of IRRFIB water balance model irrigation forecast accuracy for selected locations and crops in Slovenia
Sekundarni povzetek: Accurate and efficient irrigation has become the key to food production. To achieve effective use of water, we can rely on decision support systems for irrigation. The purpose and goal of the master's thesis is to analyze the accuracy of irrigation forecasts, which were issued by ARSO as part of the Accuracy of Irrigation Forecasting – TriN project (CRP V4-1609) with use of the IRRFIB water balance model. The trials, which data we analyzed, lasted from 1st of October, 2016 until 30th of September, 2018 and were held on 5 locations (Žalec, Jable, Bilje, Dekani and Gačnik) with different crops (hops (Humulus lupulus), potato (Solanum tuberosum), sweet cherry (Prunus avium), olive (Olea europaea) and apple (Malus domestica)) and at least a basic irrigation system present. For each location or crop we compared the daily average amount of soil water with the modeled soil water amount and the predicted and actual amount of water used in irrigation. Based on graphs, we were able to comment on special events, when the soil water content exceeded the field capacity or depleted below wilting point. We calculated the root mean square error (RMSE) and Spearmans correlation coefficient as the measurement of correspondence between modeled and measured soil water amounts. Differences between modeled and measured daily average soil water content ranged from 0 vol. % to 22,3 vol. %, with the largest differences for drip irrigation of olives during the period in 2017. Differences between irrigation amounts analyzed ranged from 0 mm to 16,4 mm. The RMSE value ranged from 1,2 to 13,7 vol.%. Spearmans correlation coefficient ranged from 0,46 to 0,87 (moderate to very strong correlation) or there was no statistically significant correlation.
Sekundarne ključne besede: efficient irrigation;irrigation forecast accuracy;water balance models;decision support systems for irrigation;
Vrsta dela (COBISS): Magistrsko delo/naloga
Študijski program: 0
Konec prepovedi (OpenAIRE): 1970-01-01
Komentar na gradivo: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Strani: 1 spletni vir (1 datoteka PDF (XV, 66 f., [17] f. pril.))
ID: 18347620