Conference Proceedings

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    Hybrid Power Supply System for Pumping Stations Based on Thermal, Photovoltaic and Hydroelectric Stations
    (2025) Toshmamat Doniyorov; Ulugbek Kuvatov; Asror Umirov; Akbar Abdurazzokov
    Information is provided on the work carried out in the Republic of Uzbekistan for the development and transformation of energy infrastructure. A diagram of the proposed Talimarjan hydropower complex is proposed, consisting of a cascade of pumping stations, a reservoir, thermal electric, photovoltaic and hydroelectric stations, which is a decentralized hybrid energy system connected to a centralized energy system. A method for determining the operating mode of the parameters of a hybrid power system on a daily load schedule is presented. The results of calculations to determine the efficiency of the proposed energy system, obtained due to the difference in the cost of electricity compared to a centralized energy system and the reduction of carbon dioxide emissions, are presented.
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    TALIMARJON SUV OMBORINING TOG‘ONIDAGI PEZOMETRLAR VA ULARDAGI TEXNOLOGIK VOSITALAR
    (2025) Bobomurodov Faxriyor Farxod o‘g‘li
    Viloyatning sug‘orishga bog‘langan maydon 360 ming.ga, loyihadagi hajmi 1525,0 mln.m3, foydali suv hajmi 1400,0 mln.m3, loyqa bosgan hajmi 125,0 mln.m3, parlanadigan yuza 77,35 km2, to‘g‘on dambaning uzunligi 10,2 km, to‘g‘on balandligi 36 metr, normal suv chiqarish qobilyati 360 m3/sek, favqulodda suv chiqarish nuqtasi yo‘q. To‘g‘onning ustki qismi belgisi 403,5 metr. Suv omborni ekspulatatsiya qiluvchi tashkilot Qarshi Magistral Kanali boshqarmasi.
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    ЧЕТАН КУЯСИ (ARGYRESTHIA CONJUGELLA Z). БИОЭКАЛОГИЯСИ ВА РИВОЖЛАНИШ ФЕНОЛОГИЯСИ
    (2025)
    Куялар оила вакилларидан четан куяси ривожланиш феналогияси тўлиқ ўрганилди ва денгиз сатҳидан 800-1500м баландликда жойлашган уруғ мевали боғлар зарар келтириш аниқланли. Шунга кўра турли ҳил об-ҳаво шароитида куяларнинг ертанги, ўртанги ва кечки олма навларига етказадиган зарари турлича бўлиши аниқланди.
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    Results of Using Spersal Chemical Meliorant to Improve the Reclamation State of Saline Soils in The Kashkadarya Region
    (2025)
    The article presents the results of experiments conducted in the Karshi district of the Kashkadarya region to improve the reclamation condition of moderately saline soils, enhance the efficiency of irrigated land use, and achieve higher crop yields. Considering the region’s water scarcity, a water saving “Chemical” method was employed to improve the reclamation state of saline soils. To ensure the leaching of salts to lower soil layers, irrigation rates exceeding the standard by 25% and 50% under water scarcity conditions were applied, and these methods were compared with traditional approaches to study the soil’s water-salt regime. The chemical ameliorant SPERSAL, recommended by the Swiss company “Sibo Novartis,” was used as a soil amendment at a rate of 5 kg/ha. When applied to the soil before irrigation or mixed with irrigation water, SPERSAL induces an ion exchange reaction in the soil adsorption complex, displacing sodium cations with calcium and magnesium cations. Salts such as sodium chloride, sodium sulfate, and sodium bicarbonate formed in the plant root zone dissolve in irrigation water and leach into lower soil layers. Key parameters studied include soil water absorption, field capacity, capillary rise height of soil moisture, the amount of water-soluble salts in irrigation, drainage, and groundwater, as well as soil moisture dynamics. Calculations for the water required for leaching and irrigation of saline soils, along with the economic efficiency of the applied variants based on cotton yields, were determined according to the “Methods of Conducting Field Experiments” (Tashkent, 2007) guidelines.
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    ANALYSIS OF THE STATE OF ENERGY SUPPLY AND OPERATING MODES OF PUMPING STATIONS
    (2025)
    The article presents the level of electrical energy supply of pumping stations, their energy supply, operating modes of pumping units, economic costs and other information.
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    ПО РЕЗУЛЬТАТАМ ПОЛЕВЫХ ПРОИЗВОДСТВЕННЫХ ИСПЫТАНИЯЙ ПРЕПАРАТА BI EKSTRA 40% К.Э. ПРОТИВ ПАУТЕННЫЙ КЛЕЩ, ПЛОДОЖОРКЕ, МЕДЯНИЦЫ, МОЛИ, ЩИТОВКИ ЯБЛОНИ И ГРУШИ
    (2025)
    Bi Ekstra 40% к.э. в.п., На основании производственных опытов, проведенных в 2024 году можно сделать следующее: Инсектицид Bi Ekstra 40% к.э. показал высокую эффективность против вредителей на яблоне и груше в норме расхода 0,8-2,0 л/га. К препаративной форме замечаний не имеем.
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    УРУҒ МЕВАЛИ БОҒЛАРДА УЧРОВЧИ КУЯЛАРГА ҚАРШИ ТУРЛИ ГУРУХГА МАНСУБ ИНСЕКТИЦИДЛАРНИНГ БИОЛОГИК САМАРАДОРЛИКЛАРИ
    (2025)
    Матрин Био (1,0-1,5 л/га), Crompton KS (0,25 л/га) ва Радиант (0,5 л/га) инсектицидлари олтинкўз, бракон ва трихограмма кушандаларининг етук зотлари учун кам таъсирчан бўлиб чиқди. Шунинг учун: Мартин Био ишлатилган далага шу кушандаларни (эҳтиёж пайдо бўлганида) 1-3 кундан кейин, Crompton KS сепилганида эса – 3-6 кун, Радиант – 4-7 кундан кейин хавфсиз ишлатиш мумкин. Кимёвий асосга эга – Нурелл Экстрим (0,7 л/га) ишлатилга пайкалга эса кушандаларни 14 16 кундан кейин тарқатиш мумкин.
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    ИККИ КАНАЛНИНГ БИРЛАШГАН ҚИСМИДА ПАЙДО БЎЛАДИГАН УЮРМАЛИ ЗОНАСИНИ ҲИСОБГА ОЛИШ БИЛАН ОҚИМНИНГ ГИДРАВЛИК ВА ГЕОМЕТРИК ПАРАМЕТРЛАРИНИ АНИҚЛАШ.
    (2025) Холмаматов Ислом Комил ўғли; Бобомуродов Фахриёр Фарход ўғли; Норчайев Абдулла Жабборович
    Икки каналнинг бирлашиши натижасида пайдо бўладиган уюрмали зонасини ҳисобга олган ҳолда, оқимнинг гидравлик ва геометрик параметрлари аниқланади. Аналитик ечим ўнг қирғоқнинг махсус нуқталарининг акс этиши ва Швартснинг юқори қисмидаги текис юзасининг акс эттириш усуллари орқали ўрганилади. Оқимнинг бирлашиши жараёнида пайдо бўлган уюрмали зона Эфрос схемаси ёрдамида кавитасияга ўхшаш оқим учун моделланган. Ечим жараёнида каналлардаги тезлик тақсимоти, уюрмали зонасининг шакли ва ўлчамлари аналитик шаклда аниқланади.