Local moisture zones profile of subdrip soil space

Vasilyev, Sergey Mikhailovich; Shkura, V. N.; Shtanko, A. S.

doi:10.28983/asj.y2019i3pp65-71

Cited by 2 publications

(1 citation statement)

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“…Another important feature of the soil moisture contour formation at drip irrigation is the sequential formation of zones with different levels of moisture content. The latter, in general, is not a secret [10,11], but it is not always taken into account in the development of species-specific technologies for the cultivation of agricultural crops irrigated by the drip method.…”

Section: Dip Of the Horizon H Mmentioning

confidence: 99%

Model of soil moistening during wide-row crops drip strip irrigation

Lytov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The study is devoted to modeling the soil moisture zone formation during agricultural crops drip strip irrigation, taking into account the system-dynamic processes of moisture distribution during irrigation and in the inter-irrigation period. The working hypothesis of the study was the assumption that, due to the point method of water supply and the radial subsurface moisture distribution, the replenishment of soil moisture reserves within the boundaries of the humidification zone occurs unevenly and this must be taken into account when developing irrigation techniques for agricultural crops. The model characterizes the moisture distribution in the soil depending on the water supply volume and the transformation of zones with differentiated moisture reserves during the inter-irrigation period established for the crop. The study uses experimental data to check the moisture distribution features in the soil after irrigation and to assess the soil moisture saturation degree by zones of the moisture contour on the date when the need for the next vegetation irrigation was established. The results of the study substantiated the need for the introduction of new parameters characterizing the soil moisture distribution during drip strip irrigation, which must be taken into account for the formation of an optimal soil water regime, focused on the cultivated crop biological needs.

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Section: Dip Of the Horizon H Mmentioning

confidence: 99%

Model of soil moistening during wide-row crops drip strip irrigation

Lytov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Mathematical model of the effective use of reclaimed lands in the South of Russia

Apazhev

Shekikhachev

Hazhmetov

et al. 2021

J. Phys.: Conf. Ser.

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To assess the state of reclaimed land by purpose and intensity of use, it is necessary to fully apply the following set of indicators: the quality of irrigation water; the depth of groundwater; the salinity of underground water; the degree of salinity of the soil; leaching of the soil; the degree of soil contamination with fluoride, heavy metals and other pollutants; the composition and amount of humus; the density and structural-aggregate composition of the soil; the degree of occurrence of adverse exogenous processes. The main of the indicators is the depth of ground water, which during the growing season is considered relative to the “critical” depth, i.e. the depth at which the optimal water-air regime is determined for growing crops and preventing secondary salinization of the soil. The direction and speed of soil formation processes are also determined by the quality of irrigation water, climatic and hydrogeological conditions of the region, soil topography, natural properties, irrigation techniques and technologies. On reclaimed lands, soil degradation occurs only under certain conditions. The most common degradation processes are: rising groundwater levels; activation of geochemical processes at the local, regional and global levels. Secondary soil salinization is observed on the reclaimed lands. The desalination process is determined by the quality of irrigation water, soil properties, depth and salinity of groundwater; leaching of the soil and an increase in toxic alkalinity, pH; drainage of irrigated soils is formed due to the development of erosional, alkaline and saline processes, the presence of perennial grasses and organic fertilizers in the crop rotation. With soil salinization, the qualitative composition of humus changes, agrophysical degradation of reclaimed lands, modification of mineral soil components and increased hydrophilicity during irrigation. According to the above indicators, the full range of degraded lands in the region is unknown, since it requires regular monitoring of the reclaimed lands. Taking into account the above, studies aimed at increasing the efficiency of the use of reclaimed lands in the South of Russia is an urgent problem.

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Local moisture zones profile of subdrip soil space

Cited by 2 publications

References 0 publications

Model of soil moistening during wide-row crops drip strip irrigation

Model of soil moistening during wide-row crops drip strip irrigation

Mathematical model of the effective use of reclaimed lands in the South of Russia

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