DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 11-12/1961 str. 25 <-- 25 --> PDF |
utrošak vremena za prelaženje i prenošenja od ovih stabala, a pritom je proizvedena smola opterećena sa jednakim utroškom radne snage. 8. Kod svih tih sastojina, bilo koje vrste bora, te bilo koje sastojinske starosti i stojbinskog boniteta, postoji neki određeni obrast i određeni broj smolarenih stabala, kod kojega je proizvedena smola po 1 kg prosječno najmanje opterećena sa utroškom radne snage. Ovaj obrast predstavlja optimalni obrast za smolarenje. Ako je konkretni obrast veći od optimalnog, tada se više smanjuje prinos smole svakog pojedinog smolarenog stabla nego se smanjuje njegov pripadajući utrošak radnog vremena, a ako je konkretn obrast manji od optimalnog, tada se utrošak radnog vremena po svakom stablu više povećava nego se povećava njegov sezonski prinos smole. LITERATURA: (l)Bićani ć Branko: Potrajnost smola renja u Dalmaciji (Uređenje borovih šuma), Šum. list broj, 6—7/195®. (2) Bojani n Stevan: O utrošku vremena kod radova na smolarenju i određivanju troškova radne snage, Sum. list broj 9—10/1960. INFLUENCE OF THE LOCATION OF TREES ON TAPPING AND OF THE NUMBER OF FACES ON THE PAYING OFF OF RESIN-TAPPING SUMMARY On the basis of Stevo Bojanin´s work (2) the influence of the location of trees (site conditions, distances between tapped trees, undershrubs and other) and of the number of trees was established on the time consumption for resin-tapping, and on the economy and profitableness of resin-tapping: 1) Irrespective of the location of the tree for tapping, the consumption of time (together with rest periods) remains in general the same, while in resin-tapping according to the modified French system it amounts for example to 560 seconds per one face for all operations occurring in a season if 52 streaks and 4 collections of resin be performed. 2) The time consumption for going from one tree to another as well as for transferring the resin cups, lips etc. changes according to the location of tapped trees. 3)For the calculation of the total time consumption for a single performance of the individual operation per each face — when tapping according to the modified French system, with one face opened on each tree — are valid the following formulas: — for preparatory works Tp = (76.7 + n. 36.6) sec. — for main works Tg = (8.7 + n. 11.5) sec. — for final works Tz = (30.3 + n. 30.3) sec. If the time consumption for a single going from tree to tree on an average amounts to 8.2 sec., then the factor n = 1. M this time consumption for a single passage is greater or lesser than 8.2 sec. then the factor n is proportionally greater or lesser than 1. If during a season 52 streaks and 4 resin collections are performed then for the calculation of the total time consumption for carrying out of all operations in |