№ 151(7), September, 2019
Public date: 30.09.2019
Archive of journal: Articles count 20, 61 kb
-
05.20.00 Processes and machines of agroengineering systems
DescriptionReserves of expansion of the areas under fruit plantings in the central part of the North Caucasus are limited, one of solutions of this problem is involvement in an agricultural turn and, in particular, under fruit plantings a little or the slope lands, absolutely inconvenient for one-year cultures, having optimum climatic conditions. Currently, scientifically based technologies of cultivation of gardens on slopes are developed for foothill and mountainous areas of the North Caucasus in relation to zones. Large corporations, as well as medium and small business are engaged in production of fruits in the North Caucasian Federal District. One of problems which vendors of fruits face it is the shortage of the equipment on care of trunk strips and row-spacings of fruit plantings. Mechanized technologies of flat gardening are a little effective in specific conditions of mountain and foothill agriculture where the main limiting factor is the soil fertility. At the same time, the question of the accelerated creation of a humic layer in the trunk strips, improvements of the water and food modes of fruit plantings on slope lands is particularly acute. The carried-out analysis of a system of maintenance of the soil in gardens showed that the most rational is the cespitose and humous system providing bevelling of vegetation with its leaving on the surface of the soil in the form of mulch. However, lots the mower-grinders produced by the industry have rather low rotating speed of a rotational operating part (540 … 840 min-1); they do not provide high-quality crushing of grass vegetation, are incapable to transport crushed grassy masses in trunk strips of fruit-trees. In this regard, we offer a construction of a unit for processing of row-spacings and the trunk strips of fruit plantings. As a result of the conducted theoretical researches, we have set rational values of key parameters of the offered unit
-
COMPARATIVE ANALYSIS OF THE DE-FORMATION IN TIRES 30.5-32 WITH A DIF-FERENT INTERNAL STRUCTURE
05.20.00 Processes and machines of agroengineering systems
DescriptionThe objective of the research was to study the patterns of deformation with the different internal structure in a tire envelope with the standard size of 30.5-32 in propulsion units for modern mobile farm vehicles. The research method is experimental with the use of «a tire tester» and specially developed devices for determining the deformations of the tire envelope concerning the rim in circular and radial directions. Output indicators of a wheel with the pneumatic tire are determined by the ability of the tire to be deformed so that at small hysteresis losses in the rubber-cord envelope the largest area of the contact with a substructure have been created. This circumstance has special significance when developing the tires for mobile farm vehicles with the high power saturation, the patterns of deformation of which are poorly studied now. The analysis of the carried out experimental researches has shown the expediency of application of the experimental tires with the same standard size, offered in the work, on the propulsion units of the mobile farm vehicles instead of diagonal and radial tires. The rolling resistance of the experimental tires 30.5E-32 is lower than the rolling resistance of serially produced tires, and the developed area of contact is higher and that provides the decrease in the condensing impact on the soil
-
06.02.00 Veterinary and Husbandry
DescriptionThe article presents the results of a study of the features of growth and development of young bulls in the conditions of Central Yakutia when mineral feed additives are included in their rations. The scientific experience was carried out on the basis of the cattle-breeding farm "Churapcha". For the experiment were selected bullhead Hereford breed at the age of 7 months. Experimental groups of animals were formed by the method of analogues. Such indicators as age, live weight, fatness, physiological state were taken into account. The control group of bulls received the main ration. In comparison with the control group, analogs with I experimental group, in addition to the basic ration, received zeolite 0.5 g / kg body weight, 150 g sapropel and 0.04 g potassium iodide. The animals of the II experimental group received, in addition to the basic ration of zeolite hongurin, at a dose of 0.7 g / kg body weight, 200 g of sapropel with 10 g of copper sulphate. The duration of scientific experience - 7 months. Studies have shown that the addition to the diet of mineral feed additives has influenced the growth and development of bulls. So, when the age of 15 months was reached, according to the compactness index, the bulls of the control group were slightly inferior to their peers by 0.9 % compared to the first experimental group and 5.8 % to the second experimental group. According to the massiveness index, gobies of the I and II experimental groups exceeded the gobies of the control group by 0.5 % and 0.3 %. Upon reaching the age of 15 months on the index of compactness, the bulls of the experimental groups had the best indicators
-
ROBOTIC MEANS IN THE PREPARATION AND DISTRIBUTION OF PROTEIN FEED IN AGRICULTURAL COMPANIES
05.20.00 Processes and machines of agroengineering systems
DescriptionThe purpose of this research is to increase the production of concentrated (protein) feed in agricultural enterprises through the use of electronic equipment or robotics and precise precision livestock technology, which will reduce the unit cost of their production. According to the academician L. P. Kormakovsky, accurate, precision technology enables economical use of material resources, which are feeds and their ingredients in the feed, and to obtain optimum results at the highest cost. The most important direction of development of accurate technologies in animal husbandry is the preparation of complete feed mixtures and normalized feeding of groups of animals formed by its productivity. One of the key conditions of efficiency of precise breeding and the use of sophisticated electronic means of control of technological processes is the quality of the feed. Over the past 15 years, concentrated feed forms have been the basis of the diet of most types of farm animals and is the main reserve for increasing their productivity. The article considers models of robotic means of different countries of producers, used in agricultural enterprises for the preparation and distribution of protein feed. The use of robotics currently makes it possible to facilitate human work, and in some cases to replace it. Replacement of a human in all the spheres of activity, for example in preparation of protein forages, at agricultural companies will allow to increase productivity of forage preparation equipment, quality of forages and to provide agriculture of the country with the domestic forages. However, the production of domestic robotics, which are designed for the preparation of protein feed on the basis of oilseeds (sunflower meal, soybean, etc.) is absent, which is a scientific problem. The production of robotics is most developed in European countries. Robotic means which carry out distribution of protein forages, are applied to a lesser extent at the domestic agricultural enterprises, in connection with their features
-
THE RESULTS OF USING THE METHOD OF TRANSPLANTATION OF EMBRYOS AT “KUBAN” AGROHOLDING COMPANY
06.02.00 Veterinary and Husbandry
DescriptionThe article presents modern methods of biotechnology used in dairy cattle breeding to increase the highly productive herd on the example of one of the farms of the Krasnodar region. The embryo transplantation method is described in detail, and a complete scheme of embryo flushing and transfer is presented. Requirements for donors and recipients, as well as for hormonal stimulation of superovulation, high-quality embryos are described. In the example of a three-year use of embryo transplantation in Agroholding Kuban company, the results are given on the number of dairy breeds of black-and-white Holstein cows, milk yield, and the quality indicator of milk. The article also proves economic efficiency
-
PRINCIPLE OF DIFFERENTIAL THRESHING DEVICE OPERATION
05.20.00 Processes and machines of agroengineering systems
DescriptionPlanetary mechanisms are used to create the working movement of the Executive bodies of metallurgical and mining machines. Roller working bodies, for the drive of which planetary mechanisms are used, are increasingly being used in the designs of harvesting machines. The processes occurring in the differential threshing devices of harvesting machines are poorly understood, due to the lack of information about the properties of the material in the event of rapidly changing stresses in them. This work is the result of the analysis of previous theoretical as well as experimental studies in the field of threshing. We describe the technological scheme of the shock-vibration threshing device and the principle of its operation. The possible variants of arrangement of drum rolls and drumming are considered. The relationship between the angular velocities of the drum, the drum rolls and the sub-drum is elucidated. Installation of three-sided rollers on the threshing device according to the scheme proposed by us allows additional shaking of the whole threshed rice mass from 75 to 110 times per second
-
APPLICATION OF HYDROCARBON SUB-STANCE OF GROWTH AT CULTIVATION OF CROPS
DescriptionIn this work we have given the analysis of the literary data confirming positive experience of impact of the hydrocarbon substance of growth (HSG) on viability of seeds, resilience, growth of plants, and productivity of various crops. It is shown that the basic experimental data belong to the 60th of the XX century. At the same time, works on application of HSG have been generalized for the first time in the collection of works of the Academy of Sciences of the Azerbaijani SSR by Institute of soil science and agrochemistry. HSG represents the by-product of petro processing received at sulphuric acid cleaning of diesel fuel with further processing with alkaline solution of NaOH. It includes mainly mixture of sodium salts of naphthenic acids. On the basis of literary data and own probes it is established that for each culture there is optimum very small concentration of HSG (0.005-0.01%), processing by solution of which makes positive impact on viability, growth and development of crops. The results of probes of blood formation of animals [8] and growth of mass of birds allow considering HSG ecologically safe. We have also presented the results of pilot study of impact of pre-seeding processing of seeds of wheat and peas by water solutions of the hydrocarbon growth substance (HSG) on their morpho-physiological parameters. The most effective concentration of HSG for processing of seeds of spring wheat of grade "Saratov" and grade peas "Alpha" is revealed. It is shown that the stimulator in concentration of 0.005-0.01% proves as stimulator of crop growth. It follows that degree of efficiency of action of HSG on improvement of development and increase in productivity of agricultural products from use of this drug is quite high. Considering that the stimulator can be received at insignificant expenses as a waste product of the purified diesel fuels, its application in agriculture is economically justified
-
IMPROVING THE EFFICIENCY OF AGRICULTURE SYSTEMS IN THE KRASNODAR REGION
DescriptionThe article considers the existing system of agriculture in the Krasnodar region. We also give the soil-climatic characteristic of natural-agricultural zones. There was studied the structure of agricultural landscapes of the region. It is concluded that in the agricultural production of the Krasnodar region approach to agriculture is focused only on zonal methods of land management, planning and organization of large agricultural enterprises. Whereas, the Land reform carried out in the Russian Federation since the 90-ies of the last century has made significant adjustments, both on domestic political and socio-economic relations in the life of society, and on land management provision of agriculture. Redistribution of agricultural land, the formation of new scientific approaches to farming systems, based on the principles of sustainability and self-regulation of agricultural landscapes, device of crop rotations, adapted to local climatic conditions are aimed at the reproduction of soil fertility and a positive balance of humus. In this regard, there were developed the proposals and calculated technical and economic indicators for the transition to a new, effective, scientifically based, adapted to local agricultural landscape conditions, high-tech balanced farming systems. According to developed proposals and recommendations, there was given the example of application in crop ten-field crop rotation for the central zone of the Krasnodar region, which is balanced in humus
-
ASSESSMENT OF THE GREENERY CONDITION AND VOLUME-SPATIAL STRUCTURE OF PETROVSKII PARK OF PETROZAVODSK
DescriptionThe article covers the results of the greenery inventory and landscape-planning structure analysis of Petrovskii park of Petrozavodsk. The features of modern park planning and positional application of trees and shrubs in various types of park and garden stands are described. In the park there were found 47 species of arboreal plants, their distribution by quantity and by different categories of viability was presented. The result of the trees and shrubs condition assessment in this park stated that 63,6% of plants are in good condition, 33,2% of arboreal plants are weakened and seriously weakened, and 3,2% are in unsatisfactory condition and appear to be shrinkable and dead standing. The analysis of the park structure and stand condition allows to offer plant renovation activities
-
PROCESS EVALUTION OF SEEDS PRE-SEEDING TREATMENT WITH INFRARED RADIATION
05.20.00 Processes and machines of agroengineering systems
DescriptionThe main subject spotted in this article is a calculation method which helps to depict optimal temperature conditions for seeds stimulation by infrared radiation useful for electromagnetic processing and seed-pelleting with perlit next. The analysis helped to depict that the convenient technical aspects of shortwave infrared radiation is in range 0,76-1,4 mcm. This kind of infrared radiation has the greatest penetrating power into the grain to stimulate. According to the methodology a rapid increase of the temperature of seeds after the critical point reaching during IR treatment leads to the properties deterioration of the of thermolabile materials. The temperature gradient during the IR treatment of seeds has the opposite direction of moisture content and depends on the preliminary humidity of the material. This affects the pre-planting cultivation quality of seeds. To avoid overheating and seeds damage there was a mathematical model of the optimal temperature of the IR radiation calculated. As the result of this method there was obtained the calculation of temperature conditions for IR treatment and heating rate depending on seeds humidity. This calculation method helps to define optimal temperature conditions to avoid harmful influence on seeds due to heating. There was data fitting during this method creation and evaluation which defines the effectiveness and perspective of this elaboration