EXPERIENCE IN RECONSTRUCTION OF LOW-VALUE FOREST PLANTATIONS OF EUROPEAN SPRUCE
The research was carried out in reconstructive cultures laid down in 2008 by the corridor method in a low-value birch plantation. Reconstruction of young animals was carried out by building corridors with a width of 2, 4, 6 meters. 4-year-old seedlings of European spruce were used as planting material. In two - meter corridors, 1 row of fir trees was planted, in four-meter corridors - 2 rows, in six-meter corridors - 3 rows. The landing step in a row averaged 1.0-1.2 m. Two years after the creation of the crops, when the spruce entered a phase of rapid growth, the forest scenes were thinned with the removal of 50-60% of soft-leaved trees and the abandonment of common pine and European spruce in the scenes. As a result, the composition of natural regeneration in the wings has changed in the direction of increasing the participation of pine and spruce trees. 4 years after planting, spruce crops closed in rows, closing in the aisles was 70-80%, and the overall safety of trees in the corridors varied from 80 to 90%. The height of the crops, depending on the variant of the experiment, ranged from 1.42-1.68 m, and the diameter of the trunk at the root neck - 2.5-3.6 cm. 11 years after creation, depending on the width of the corridors, the height of spruce crops varies from 5.1 m to 6.2 m, and the average diameter at chest height is 5.3-6.6 cm. the preservation of spruce crops in the corridors ranges from 62 to 80%. The greatest productivity of planting is observed during the reconstruction of corridors with a width of 6 m and leaving the wings of the same width. With this method of reconstruction, the spruce stock in the corridors is 34 m3/ha, and the total planting stock, taking into account the rocks in the backstage between the corridors, is 78 m3/ha.