Actual problems of Mathematics, Physics and Mecanics
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Actual problems of Natural Sciences
CHANGING SOIL AGROCHEMICAL PROPERTIES IN CONTAMINATED SOIL BY LEAD AND ZINC
Soil contamination with Zn and Pb has led to public concern over soil contamination with metals. Agrochemical properties of three types of soils around Angren and Navoi electro stations, are determined over 10 years. It was found that soil agrochemical properties can occur in total heavy metals to...
3 April 2020, 03:35
IMPROVING THE METHOD OF SYNTHESIS OF CHLORACETYLPYROCATECHOL
In the article the reaction of chloroacetylation of pyrocatechol in the presence of catalytic amounts of Lewis acids is described. The factors affecting the course of the reaction of chloroacetylation of pyrocatechol are investigated....
3 February 2020, 02:48
GENE-STORE AND GROWING OF CUCUMIS MELO VARIETIES IN THE CLIMATE OF KHOREZM REGION
This article deals with the growth, vegetation and fertility of melon varieties grown in the lower Amu-darya riverarea. The results of studies on the amount of sugar in melon fruit, the size and weight of them are indicated here. The sorts of melons under research have been preserved not being...
3 February 2020, 02:48
KHOREZMIAN VESPIDAE FAMILY TYPE STRUCTURE AND BIOLOGY
This article provides a brief overview of the true bees of the Khorezm oasis, their composition, distribution and morphological features....
3 February 2020, 02:48
HARMFUL LOCUSTS AND THEIR NATURAL PESTS IN THE SOUTH ARAL SEA REGION
The article provides information on the morphology and physiology of the spreading vermin locusts, which cause great damage to agrocenoses and pastures in the Southern Aral Sea regions. It also provides a brief overview of the natural pests of harmful locusts spread throughout the area....
3 December 2019, 01:36
BIO-ECOLOGICAL CHARACTERISTICS OF THE MOST COMMON DOMINANT SPECIES PECULIAR TO THE YOUNGER FAMILY OF THE IPIMORPHINAE (BECK, 1989), OCCURRING IN THE AGROCENOSIS OF THE LOWER AMU DARYA REGION
This article describes biological and ecological features of the most common night-time butterflies peculiar to the Ipimorphinae subspecies, caught in the Lower Amu Darya agrocenosis, including time of their flight, the food specialization of butterflies and the number of generations....
3 December 2019, 01:36
BIOGEOTECHNOLOGICAL SIGNIFICANCE OF THE CENTRAL KYZYLKUM DESERT‘S FLORA
The Central Kyzylkum desert is an industrial area which is rich in rare and non-ferrous metals. The study of biogeotechnological characteristics of plants in the region is vital for the bioremediation of industrial zones....
3 November 2019, 23:50
ACTIVITY AND FUNCTIONAL DIVERSITY OF MICROBIAL COMMUNITIES IN LONG-TERM HYDROCARBON CONTAMINATED SOILS (PAHs)
The reaction of soil microorganisms to the contamination of soil with PAHs was evaluated. Eight variations of soil and water contaminated with PAHs taken in Power Plant Station and Fergana Oil Purification Plant in Angren, Tashkent, Uzbekistan. Contaminated soils with PAH are taken in the Station...
3 November 2019, 23:50
ROLE OF MULCHING AGROTECHNOLOGY IN DEVELOPING WATER SAVING AGRICULTURE AND OPPORTUNITIES OF GARDENING WITHOUT WATERING IN NAMANGAN REGION ADYRES
The article discusses mulching agro technology which is frequently used in water rare areas and the role of water saving. Besides that experiment results of opportunities of gardening by mulching in Namangan region hills are presented....
3 November 2019, 23:50
MATHEMATICAL ANALYSIS OF RESULTS OF RESEARCH ON STUDYING INFLUENCE OF WHEAT FEEDING IN THE PHASE OF EMBRYONAL DEVELOPMENT THROUGH LEAVES BY THE METHODS OF B.A.DOSPEKHOV
Based on the results of field experiments in 2015-2017 on winter soft wheat varieties, the yield error was 0.64-0.98 kg / ha (НСР05 factor A), and the yield error on application of the urea norm was 0.45- 0.69 kg / ha (HCP05 factor B), which allows us to consider the conducted research reliable....
3 November 2019, 23:50