Pradinio tankumo ir sodinimo vietų išdėstymo įtaka hibridinio maumedžio želdinių augimui ir stiebų kokybei

Abstract

The first natural Japanese and European larch hybrids discovered English scientists Henry A. and M. Floyd in 1900. In Scotland, the Castle Dunkeld , where self- growing Japanese larch with a group of European larch had the right conditions to cross each other (Larsson - Stern , 2003) . This study aims to determine the influence of initial planting density and arrangement of places larch dendrometriniams and stem quality indicators. Measurements were carried out in 2013 autumn - Dubrava Experimental Training Forest Enterprise, Vaišvydavos district with 30 years of hybrid larch density tests. Analyzing larches were measured densities of different areas: 500, 1000, 1500, 2000 , 3000, 5000 , 10000 units / ha. Maximum heights were recorded 1500 units / ha and 5000 units / ha plots and 25.0 - 24.8 meters. The highest average measured diameter larch was the area where the trees grow 1500 units / ha density , it reaches 29.5 cm . After the volume dependence of the initial density calculations show that the density of different areas of timber volume varies. The largest volume of larch trees growing in 1500 pieces / ha density 0.78 - m3