Hydro-modular zoning of irrigated lands in South Karakalpakstan and optimal irrigation regime for cotton

The article presents the results of research on hydromodular zoning of irrigated lands based on GIS technologies and cotton irrigation regimes in the conditions of South Karakalpakstan, which ensure an increase in the productivity of scarce irrigation water. Irrigated lands of the southern districts...

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Bibliographic Details
Main Authors: Khamidov, M., Urazbaev, I., Xamidova, Sh
Format: Conference Proceeding
Language:English
Subjects:
Aeration
Cotton
Groundwater levels
Irrigated lands
Irrigation
Irrigation water
Moisture content
Moisture effects
Norms
Soil layers
Soil mechanics
Soil moisture
Thickness
Zoning
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Summary:The article presents the results of research on hydromodular zoning of irrigated lands based on GIS technologies and cotton irrigation regimes in the conditions of South Karakalpakstan, which ensure an increase in the productivity of scarce irrigation water. Irrigated lands of the southern districts of the Republic of Karakalpakstan belong to one soil-climatic zone - desert zone, within three soil-ameliorative areas within this zone. Irrigated lands of the southern districts of the Republic of Karakalpakstan are divided into 25.78% - VII, 34.37% - VIII and 21.86% - IX hydromodule zones in the aeration layer according to soil thickness, mechanical composition, location and groundwater level. Based on field experiments, pre-irrigation of cotton in all hydromodule areas should be carried out at a soil moisture content of 70-80-60% relative to the limited field moisture capacity: Seasonal irrigation norms 3756-3856 m3/ha in the 1-4-1 system for growth phases in VII hydromodule region with, seasonal irrigation norms of 2789-2867 m3/ha in 1-2-1 system in hydromodule region VIII and seasonal irrigation norms of 2203-2250 m3/ha in 0-3-0 system in hydromodule region IX.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0113264