Abstract
The article contains proposals for double regulation of the groundwater level to obtain a high yield with the lowest water consumption. In the article, all side-by-side studies of the issues of double regulation of the groundwater level and scientifically-based proposals are given on them. The report contains the results of studies carried out at experimental sites in the Khojaili region and Kungrad regions of the Republic of Karakalpakstan. According to the data of the conducted field studies on the collector, the calculated parameters were obtained for double regulation by the construction of retaining structures. During the growing season, the collector was locked, and the optimal soil moisture was achieved and, accordingly, the yield of agricultural crops was increased.
Highlights
In the context of global water scarcity, the rational use of water for irrigating crops is gaining momentum
Decrease in the groundwater level below the critical value guaranteed excludes the occurrence of secondary salinization, but, in turn, leads to an increase in irrigation rates on the one hand and, on the other hand, a negative impact on the development of agricultural crops, especially, this can become the reason for the lack of the necessary moisture for the development of crop yields
Groundwater level control is used in drying-humidification systems. Their basic diagram differs from simple systems: the collector system serves to dry and simultaneously moisten the soil, controlling groundwater level
Summary
In the context of global water scarcity, the rational use of water for irrigating crops is gaining momentum. Decrease in the groundwater level below the critical value (above 3.0 m) guaranteed excludes the occurrence of secondary salinization, but, in turn, leads to an increase in irrigation rates on the one hand and, on the other hand, a negative impact on the development of agricultural crops, especially, this can become the reason for the lack of the necessary moisture for the development of crop yields.
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