On the Irrigation Regime of Agricultural Crops

Ramazanov, A N; Buriev, S

doi:10.35938/2018.1.11.3

Cited by 4 publications

(3 citation statements)

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“…Математические моделирование различных характеристик ударопрочных материалов на основе графена и квантовомеханическое исследование имеет важное значение [10,11,12]. Такие теоретические расчеты проводят обычно методом молекулярных орбиталей (МО) [13][14][15][16][17][18][19].…”

Section: методикаunclassified

“…В предыдущих наших работах применяя полуэмпирический РМ3-метод были исследованы электронные структуры различных материалов [14][15][16][17][18][19][20][21][22]. Расчеты показывают, что в С−С-линейных цепочках и в графеноподобных кластерах, независимо от размера, равновесные расстояния С−С оказываются равными 0.13 nm [11].…”

Section: методикаunclassified

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Моделирование Электронной Структуры Композитного Материала Графен-Поливинилиденфторид

Гасанов¹,

Байрамов²

2019

Физика Твердого Тела

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Theoretical models of shockproof composite materials based on two-layer graphenes and multilayer polyvinylidene fluoride C_124H_40 + n (H–(C_2H_2F_2)_5–H) ( n = $$\overline {1,\;8} $$ ) are constructed. The electronic structure is studied using the semiempirical PM3 method that is one of version of the molecular orbital method. The orbital energies, ionization potentials, total electron energies, strength, and other properties of the considered material are calculated based on the theoretical models. The outlooks for application of these materials in the military field for manufacturing superstrong and lightweight flak jackets are considered.

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Section: методикаunclassified

Моделирование Электронной Структуры Композитного Материала Графен-Поливинилиденфторид

Гасанов¹,

Байрамов²

2019

Физика Твердого Тела

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“…Agrotechnologies adopted in the region under consideration recommend that in case of severe salinization in the period from December to March, from 8 to 12 thousand cubic meters of water per hectare should be supplied in 2-3 cycles. With an average degree of salinity, the water supply rate is reduced to 4 to 8 thousand cubic meters of water per hectare [6]. As a result of winter washing (January-February), water mirrors are formed in the fields, which can exist for a month or more.…”

Section: Introductionmentioning

confidence: 99%

Estimation of average long-term soil salinity of arable land Golodnaya Steppe in Kazakhstan

Terekhov,

Sagatdinova,

Murzabaev

2023

E3S Web Conf.

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In the Syr-Darya River basin on the border between Kazakhstan and Uzbekistan there is an irrigation massif “Golodnaya Steppe”. In its Kazakh part, the agricultural procedure of winter washing of fields is practiced for cleaning from secondary salinization. It is carried out in January-February by flooding saline fields. At the same time, water mirrors are formed on the arable land, which can be recorded using satellite data. In this study, based on satellite information from Landsat 8,9 and Sentinel 1,2 for the period January-February 2016-2022, masks of water mirrors were created, located on irrigated arable land in winter. These masks diagnose seasonal farmers’ activity on cleaning arable land from secondary salinization. Analysis of the field washing frequency in the period 2016-2022 allowed to estimate the average long-term salinity of irrigated arable land in the analyzed region. The data obtained are of interest for the zoning of the territory of the irrigation massif “Golodnaya Steppe” in Kazakhstan according to the level of secondary salinization, which is important for optimizing the work to improve the irrigation and drainage infrastructure.

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Reconstruction of the closed horizontal drains in the Jizzakh region

et al. 2021

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The article is devoted to the reconstruction of existing old drainage systems in order to radically improve the reclamation ecological and sanitary conditions of the lands of the Jizzakh region to improve the social conditions of the population and obtain high stable yields of cotton and other agricultural crops. As a result of many years of theoretical and irrigation to experimental research, operational monitoring in farms in the Pakhtakor district of Jizzakh region. The parameters of the primary horizontal drain are determined based on the analysis of reclamation climatic, soil, geological, hydrogeological, hydrological, economic, and other conditions. The calculation of the reconstruction of horizontal closed drainage is based on the method of A.N. Kostyakov in intensity from working the groundwater level after flushing. The depth of the drainage was determined, taking into account global climate change in recent years; based on these changes, an adjustment was made in the calculations to determine the value of the critical depths of groundwater during the operation of drainage systems. The incoming and outgoing parts of the water balance of the experimental plots were determined. In the presence of pressure groundwater, the size of the supply of groundwater with pressure water is determined. More proposed by the V.N. Shestakov's formula.

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On the Irrigation Regime of Agricultural Crops

Cited by 4 publications

References 0 publications

Моделирование Электронной Структуры Композитного Материала Графен-Поливинилиденфторид

Моделирование Электронной Структуры Композитного Материала Графен-Поливинилиденфторид

Estimation of average long-term soil salinity of arable land Golodnaya Steppe in Kazakhstan

Reconstruction of the closed horizontal drains in the Jizzakh region

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