Orezivanje grana u zasadima topole mehanizovanim uređajima

Abstract

U radu su prikazani rezultati istraživanja uticaja faktora (prečnik grane broj grana, starost zasada, broj orezivanja, radni sklop uređaja za orezivanje grana, itd) na trajanje orezivanja grana u zasadima topole. Grane su orezivane sa mehanizovanim uređajima Stihl HT 75 i uređajem Husqvarna 250 PS. Ustanovljeno je da vreme orezivanja grana, značajno raste sa brojem odrezanih grana u svim zasadima bez obzira na starost zasada i razmak sadnje. Ova zavisnost je predstavljena stepenom funkcijom. Pored toga vreme orezivanja grana raste sa povećanjem prosečnog prečnika grana odrezanih na stablu. Za ulaz u norme rada mogu se uzeti intervali po pet grana, s obzirom da u okviru ovih intervala ne postoje statistički značajne razlike vremena orezivanja grana.

The effects of factors (branch diameter, number of branches, plantation age number of prunings, working assembly of pruning devices, etc) on the duration of pruning in poplar plantations were investigated. Poplar branches were pruned by mechanized devices Stihl HT 75 and Husqvarna 250 PS. It was concluded that pruning time increases significantly with the number of removed branches in all plantations disregarding the plantation age and spacing. This correlation is represented by a degree function. Also, pruning time increases with the size of average branch diameter removed from the tree. The intervals of five branches can be taken as the working norms because within these intervals there are no statistically significant differences of pruning time.