prikaz prve stranice dokumenta Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza
  Download
PDF 2.71 MB
master's thesis
Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza
Zagreb: University of Zagreb, Faculty of Agriculture, 2019. urn:nbn:hr:204:401973
Martinović, Josip
University of Zagreb
Faculty of Agriculture
Department of Agricultural Engineering

Cite this document

Martinović, J. (2019). Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:401973

Martinović, Josip. "Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza." Master's thesis, University of Zagreb, Faculty of Agriculture, 2019. https://urn.nsk.hr/urn:nbn:hr:204:401973

Martinović, Josip. "Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza." Master's thesis, University of Zagreb, Faculty of Agriculture, 2019. https://urn.nsk.hr/urn:nbn:hr:204:401973

Martinović, J. (2019). 'Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 25 April 2024, https://urn.nsk.hr/urn:nbn:hr:204:401973

Martinović J. Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2019 [cited 2024 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:204:401973

J. Martinović, "Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:204:401973

Please login to the repository to save this object to your list.
Metadata
TitleUtjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza
Title (english)Impact of working speed on quality of corn planting with pneumatic seed drill
AuthorJosip Martinović
MentorIgor Kovačev (mentor)
Committee memberIgor Kovačev (predsjednik povjerenstva)
Committee memberNikola Bilandžija (član povjerenstva)
Committee memberŽeljko Jukić (član povjerenstva)
Committee memberZlatko Koronc (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Department of Agricultural Engineering)
Zagreb
Defense date and country2019-07-08, Croatia
Abstract
Cilj istraživanja bio je utvrditi optimalnu brzinu kretanja sijaćeg agregata obzirom na radni učinak i kvalitetu sjetve: razmak između redova i razmak unutar reda. Istraživanje je provedeno na dva tipa pneumatskih sijačica (s podtlakom i s nadtlakom) pri tri brzine kretanja (6, 8 i 10 km/h). Nakon sjetve utvrđeno je da sijačica sa podtlakom pri brzini od 6,24 km/h imala 100%-tnu točnost, a pri većim brzinama sjetve javljaju se odstupanja u vrlo malom postotku. U sjetvi sa sijačicom s nadtlakom, povećanjem brzine kretanja sijačice s nadtlakom, došlo je do značajnog smanjenja kvalitete sjetve. Obzirom na učinak agregata povećanje brzine kretanja opravdano je kod sijačice sa principom rada na podtlak zbog toga što povećanjem brzine dolazi do vrlo malih odstupanja u zadanom sklopu i malog smanjenja kvalitete sjetve prema ISO 7256.
Abstract (english)
The aim of this research was to determine the optimal working speed air seed drill regarding work rate and seed distribution: space between rows and space within rows. The research was conducted with two types of pneumatic sowing machines (with overpressure and with vacuum metering system) at three working speeds (6, 8 and 10 km/h). After sowing it was determined that the sowing machine with vacuum metering system at the speed of 6,24 km/h had 100 % accuracy, and at higher speeds minor deviations occurred. In sowing with the sowing machine with overpressure system, increasing the working speed resulted with a major decrease of seed distribution quality. Given the work rate of the sowing aggregate, the increase of the working speed is justified in the case of vacuum type pneumatic seed drill because the increase in speed results in minor deviations in sowing rates and seeding quality according to ISO 7256.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:204:401973
Study programmeTitle: Agricultural Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
RepositoryRepository Faculty of Agriculture University of Zagreb
Created on2019-07-15 06:51:49

(©) Nacionalna i sveučilišna knjižnica u Zagrebu 2015. Sva prava pridržana. | Hrvatske bratske zajednice 4 p.p. 550, 10000 Zagreb, Hrvatska Tel. ++ 385 1 616-4040
OIB: 84838770814 | IBAN: HR66 2340 0091 1000 1008 1, Porezni broj (PDV identifikacijski broj) - VAT Number: HR84838770814
Prijava u repozitorij