ПРИЖИВАЕМОСТЬ И РОСТ СОСНЫ ОБЫКНОВЕННОЙ В УСЛОВИЯХ ПРИМЕНЕНИЯ ПОЛИМЕРОВ ДЛЯ УСЛОВИЙ СТЕПИ И ЛЕСОСТЕПИ

Abstract

The article presents the results of a study of the survival, growth and condition of forest crops of scots pine with the use of polyacrylamide polymer "AQUASORB". The object of research was the forest cultures of scots pine in the conditions of the steppe on sand and sandy soils, in the conditions of the forest-steppe - on loam. The polymer was used as a gel in doses of 125 ml and 250 ml, and also in dry form was introduced into the root system of seedlings before planting. The ability of the polymer to absorb water and give it to plants with its subsequent shortage in the soil caused its effectiveness, which is confirmed by an increase in the survival rate of pine crops by 16-20% in steppe conditions on sand and sandy soils and by 9-13% on loam in forest-steppe conditions. The intensity of pine growth in variants with different doses of polymer increased by 48-78% in steppe conditions and by 36-60% in forest-steppe conditions in the first year of pine crops' life. In the third and fifth years of the life of pine crops, the intensity of pine growth in (150) variants with polymer decreases, which indicates the leveling of the polymer's action in the soil over time. Positively affecting the survival rate and growth rate of pine crops, AQUASORB polymer contributes to an increase in the preservation of pine forest crops in the fifth year of life by 1.2-1.3 times. The effectiveness of the polymer decreases with sufficient water reserves in the soil.