The extinction of a large part of the existing forest and ornamental trees in forestry is observed under the influence of pests, which leads to the depletion of biodiversity. This, in turn, depends on several environmental factors. The article highlights the studies conducted in 2017–2018 in the territory of the Chatkal-Ugam state reserve of the Tashkent region, on the main types of pests of the forest and ornamental trees, the number of healthy and affected trees, and species of trees. The researches show the number of damaged trees in the areas where the ecological balance is disturbed. The authors made a detailed survey of trees affected by stem pests and diseases; identified stem pests of trees and conifers species, which are the part of the assortment of forest plantations of the Ugam-Chatkal state reserve. The article is devoted to a topical issue of conservation and efficient use of forest resources and their protection from massively propagating pests and diseases of the forest plantings.
| Mualliflar | B. A. Sulaymonov, M. M. Qalandarov, A. R. Anorbayev, U. A. Masharipov |
|---|---|
| Jurnal | Илм-фан ва инновацион ривожланиш |
| Nashr sanasi | 2019-10-30 |
| Jild | 2 |
| Son | 5 |
| Betlar | 95-99 |
| Til | en |
| DOI | 10.36522/2181-9637-2019-5-14 |
DOI: 10.36522/2181-9637-2019-5-14 · Maqolaning asl sahifasi
The article discusses a squeezing device in a wool washing machine that helps resist low squeezing efficiency, providing high-quality washing. The analysis presents roller mechanisms, which ensure a higher level of wool…
The article outlines the methodological foundations of HR marketing research of the rural labour market in labour-surplus regions of the Republic of Uzbekistan in the conditions of the functioning of a socially oriented…
The concept of happiness has attracted the attention of economists in recent years. Happiness/life satisfaction is essential for producers to analyze how consumers are satisfied with their goods and services at the…
The article explores effective economic mechanisms for employing rural youth and their impact on reducing unemployment. In addition, the socio-economic importance of the development of modern types and means of…
This article reviews a method for selecting a gear material based on the wear resistance properties of teeth. The approach takes such properties as hardness, number of loading cycles leading the destruction a deformed…
This article presents the topicality of the problem, the sequence of technological processes in manufacture of silk twisted yarn from raw silk used for making of a medical bandage. In order to fold a few threads, and…
Nowadays, one of the most pressing issues across the world is the efficient use of budgetary funds, ensuring their targeted spending, optimizing public expenditure and attracting private investment into national…
Currently, the issue of transferring the economy of the republic and its regions to an innovative path of development has become relevant for Uzbekistan. Forming up a cluster model of development is important in terms…
A study into the influence of the speed of the incoming dust flow and a size of the inlet of a cyclone on its performance. The structure of the flow field has been investigated by calculations made using the Reynolds…
This article describes international practice of tax regulation, viz: promotion of innovative and investment activisms of companies. New forms, positive and preferential aspects of tax benefits and preferences have been…