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Ohranitvena obdelava tal za povečanje sposobnosti zadrževanja vode
ID Lipovšek, Matija (Author), ID Zupan, Marko (Mentor) More about this mentor... This link opens in a new window, ID Mihelič, Rok (Co-mentor)

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Abstract
V diplomskem delu primerjamo, kako plitva ohranitvena obdelava tal (do globine 10 cm; rastlinski ostanki delno ostanejo na površju tal) vpliva na lastnosti tal v primerjavi s konvencionalno obdelavo tal z oranjem (globina obdelave tal 0 – 28 cm; po obdelavi gola površina brez ostankov). Podatke smo pridobili na dveh poljskih poskusih, kjer od leta 2011 kontinuirano primerjamo oba sistema obdelave tal: na plitvih, meljasto-ilovnatih tleh v Moškanjcih na nasutju kvartarnega dravskega proda (»Mamino«) in na globokih aluvialnih, oglejenih, meljasto-glinenih tleh v Mezgovcih na aluviju reke Pesnice (»Kumrovo«). Ocenili smo tudi vpliv globinskega podrahljavanja tal (globina rahljanja do globine približno 40 cm), ki smo ga na obeh poskusih in pri obeh tipih obdelave tal izvedli pred začetkom poskusa poleti 2011. Po žetvi oljne ogrščice smo v juliju 2014 izmerili infiltracijo vode, mehansko upornost in vzeli neporušene vzorce tal ter določili volumsko gostoto tal in kapaciteto tal za vodo. Ugotovili smo, da ohranitvena obdelava tal ugodno vpliva na tla, kljub razmeroma kratkemu, triletnemu trajanju poskusa. Pri ohranitveni obdelavi so se povečali infiltracijska sposobnost, poroznost tal in mehanska upornost. Tako obdelovana tla so bolj nosilna in se manj ugrezajo pod kolesi težkih kmetijskih strojev. Pridelek je bil večji na ohranitveno obdelanih tleh (za 5 % več na »Kumrovo« in za 11 % na »Mamino«). Globinsko podrahljavanje tal ni pokazalo bistvenih učinkov na pridelek in fizikalne lastnosti tal.

Language:Slovenian
Keywords:ohranitvena obdelava tal, lastnosti tal, infiltracija
Work type:Bachelor thesis/paper (mb11)
Typology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2021
Publisher:[M. Lipovšek]
Place:Ljubljana
PID:20.500.12556/RUL-133384 This link opens in a new window
UDC:631.512:631.432(043.2)
COBISS.SI-ID:87132163 This link opens in a new window
Publication date in RUL:25.11.2021
Views:283
Downloads:28
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Secondary language

Language:English
Title:Conservation tillage to increase soil water retaining capacity
Abstract:
The diploma thesis compares the effect of shallow conservation tillage (up to a depth of 10 cm, plant residues remain partly on the soil surface) on soil properties compared to conventional tillage with plow (tillage depth 0 – 28 cm; bare surface without residues after tillage). Data were obtained in two field trials where we compared both tillage systems continuously since 2011: on shallow silty-loamy soils in Moškanjci on the alluvium of the Quaternary Drava gravel (site 'Mamino') and on deep alluvial gley, silty-clay soils in Mezgovci on the alluvium of the Pesnica River (site 'Kumrovo'). We also evaluated the effect of deep soil loosening (loosening depth to a depth of about 40 cm), which was carried out in both trials and for both tillage types before the start of the experiment in summer 2011. After the oilseed rape harvest in July 2014, we measured water infiltration and mechanical resistance and collected undisturbed soil samples and determined soil volume density and soil water capacity. We found that conservation tillage had a positive effect on soil, despite the relatively short, three-year duration of the experiment. Infiltration capacity, soil porosity and mechanical resistance increased during conservation tillage. Soil treated in this way is more load-bearing and less likely to sink under the wheels of heavy farm machinery. Yield was higher on conservation tillage (5 % more on 'Kumrovo' and 11 % on 'Mamino'). Deep loosening of the soil showed no significant effect on yield or physical properties of the soil.

Keywords:conservation tillage, soil properties, infiltration

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