Year 2021, Volume 6, Issue 1
| Year : | 2021 |
| Volume : | 6 |
| Issue : | 1 |
| Authors : | Yury A. MAZHAYSKIY, Artem A. PAVLOV, Otilija MISECKAITE |
| Title : | CROPS WATER CONSUMPTION AND VERTICAL SOIL MOISTURE EXCHANGE |
| Abstract : | A various number of factors, which, in turn, also vary greatly, determines the process of water consumption. These are meteorological indicators, yield, crop properties and soil conditions. The values of the water consumption of irrigated crops (in the operational regime of irrigation in the calculation of the water balance) are recommended to be determined counting on: the indicators of heat supply of the territories, that is, the radiation balance; air humidity deficit and bioclimatic factors of water consumption, taking into account the type and phase of plants development, the physical condition and the soil moistening. The empirical method for determining the vertical moisture exchange takes into account the biological characteristics of crops, the conditions for the heat and moisture availability of the calculation periods, the power and humidity of the soil layer under study, the water-physical properties of the ground, and the depth of the groundwater. It gives reliable results and can be used in calculations of the water regime in designing and exploitation of the reclamation systems. The groundwater affects the formation of the soil water regime in the aeration zone. At shallow occurrence, they increase the humidity in the root layer, which makes it possible to reduce the irrigation rates and the number of irrigation events. This article considers the problem of reducing errors and improving existing methods of calculating water consumption by crops and vertical soil moisture exchange. The methods of (Shebeko et al., 1980), Rogotskiy (1981) and Pylenok (1985) were taken as the basis of the research. According to them and empirical formulas developed by Mazaiski (2002), the calculations of vertical moisture exchange were made. The empirical method for determining the vertical moisture exchange takes into account the biological characteristics of crops, the conditions for the heat and moisture availability of the calculation periods, the power and humidity of the soil layer under study, the water-physical properties of the ground, and the depth of the groundwater. It gives reliable results and can be used in calculations of the water regime in designing and exploitation the reclamation systems. |
| For citation : | Mazhayskiy, Y., A., Pavlov, A., A., Miseckaite, O. (2021). Crops water consumption and vertical soil moisture exchange. AGROFOR International Journal, Volume 6. Issue No. 1. pp. 57-64. DOI:10.7251/AGRENG2101057M |
| Keywords : | soil moisture, water consumption, infiltration, radiation balance. |
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ISSN 2490-3434 (Printed)
ISSN 2490-3442 (Online)
ISSN 2490-3442 (Online)
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