Efikasnost rada harvestera u kulturama bora na području Deliblatske peščare

Abstract

U radu su prikazani rezultati istraživanja efikasnosti rada harvestera John Deere 1470G, u kulturama belog bora (Pinus sylvestris) starosti 70 godina. Istraživanje je sprovedeno na teritoriji GJ "Deliblatski pesak - Korn". Primenjena je studija vremena i rada. Vremena trajanja radnih operacija snimana su metodom fotohronometraže. Ukupno je posečeno 500 stabala, ukupne zapremine 436,40 m3 . Rezultati su pokazali da u ukupnom vremenu seče i izrade zastoji učestvuju sa 34%, dok je udeo efektivnog radnog vremena 66%. Faktor dodatnog vremena iznosi 1,60. Produktivnost harvestera najviše je zavisila od prečnika stabla na prsnoj visini i kretala se od 4,77 m3 /ha do 24,55 m3 /ha. Jedinični troškovi su se smanjivali sa povećanjem prečnika stabla na prsnoj visini. Vrednosti jediničnih troškova kretali su se od 3,26 €/m3 do 16,78 €/m3 .

This paper presents the results of the research of efficiency of work of John Deere 1470G harvester in 70-year-old Scots pine (Pinus sylvestris) plantations. The research was carried out in the territory of FMU Deliblato Sands - Korn, implementing the work time study. The chronometric method was applied to record the duration of every single harvester operation. The total number of cut trees was 500 and the total volume amounted to 436.40 m3 . The results showed that the share of downtimes in the total time of tree cutting and processing of wood assortments was 34%, while the effective working time was 66%. The allowance time coefficient was 1.60. The productivity of the harvester was most affected by DBH and ranged from 4.77 m3 /ha to 24.55 m3 /ha. Increasing DBH would reduce unit costs. Unit costs ranged from 3.26 €/m3 to 16.78 €/m3 .