Some properties of soils and increasing their fertility in seed branch of scots pine in the open ground forest nurseries

Abstract

Evaluation of soil fertility in forest nurseries in the seed compartment of Scots pine in the open ground. Describes the soil of nurseries by origin of parent rocks and morphological features. For seed-ling nurseries surveyed, soils are characterized by favorable water-physi cal properties, structure, porosity. All of the examined soils in the lower soil horizons, are characterized by a light granulometric composition, which helps to remove excess moisture for growing seedlings. Determined humus content and acidity, as well as the content of the main macroelements in the plough horizon. The amount of acidity pH ranges from 5.23 to 6.19. In the surveyed nurs eries are regularly made lim e fertilizers, and soil in these cases are characterized as slightly acidic and close to neutral, respectively, application of lime fer-tilizers on these nurseries is not required. We studied the soils of forest nurseries main nutrients, and proposed ways to improve soil fertility. As indicator s of soils forest nursery mobile phosphorus, ex-change potassium is characterized by uniform distribution throughout the seed branch of Scots pine. In the assessment of nutrients in forest nurseries su rveyed used a scale of soils, V. S. Pobedova. Based on the obtained data about the soils of forest nurserie s batteries, when grown on them, the Scots pine were proposed types and doses of complex fertilizers of pr olonged action to improve the fertility of the soil.