tailieunhanh - Báo cáo lâm nghiệp: "Intensively fertilised seedlings of the beech (Fagus sylvatica L.) for artificial regeneration of the spruce stands in the process of conversion"

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Intensively fertilised seedlings of the beech (Fagus sylvatica L.) for artificial regeneration of the spruce stands in the process of conversion. | JOURNAL OF FOREST SCIENCE 54 2008 10 452-458 Intensively fertilised seedlings of the beech Fagus sylvatica L. for artificial regeneration of the spruce stands in the process of conversion A. Jurasek J. Bartos J. NÁROVCOVÁ Forestry and Game Management Research Institute Strnady Opocno Research Station Opocno Czech Republic ABSTRACT Artificial regeneration of autochthonous target tree species plays an important role in the process of conversion of forest stands. The European beech is one of the most suitable and most frequently used tree species in this process. Modern technologies of intensive methods of the cultivation of the European beech seedlings provide among others a possibility to increase the proportion of this tree species in reforestation more quickly. It is however necessary to test at what types of sites this planting material can be used. The health status and growth of intensively grown beech seedlings in the first years after planting were studied on 2 research plots. Proper intensive fertilisation of the beech seedlings affected positively both the initial height and growth. Even the slow-release fertiliser did not negatively influence the beech after planting. The health status of the beech is excellent after 4 years the average height of plants with different fertilisation treatments having become equal. It is to conclude from the hitherto obtained results that a slow-release fertiliser in the substrate has a positive effect on the plant growth and that different fertilisation variants did not cause any serious root deformations of the beech planting stock samples taken 4 years after planting. The impacts of prior nursery fertilisation upon the beech planted under the conditions of extreme sites are further investigated. Keywords European beech fertilisation containerised seedlings The artificial regeneration of broadleaved tree species is the main way of increasing the proportion of autochthonous trees species in order to reduce extensive spruce