Knowledge Base

Identification Code


Project title

Rice water consumption study

Project location

The Republic of Uzbekistan, Karakalpakstan, Chimbai rayon, state farm "October"



Rubric (SIC ICWC)

Project duration


Project manager

A.R.Ramazanov, SPA SANIIRI, Uzbekistan, 700187, Tashkent, Karasu-4, 11


Study is devoted to definition of rice water consumption norm cultivated††† on††† meadow-alluvial††† saline††† soils,††† comparative assessment of designed and actual rice irrigation norm; optimal rice water consumption norm with regard to unsaturated zone desalinization; water use improvement; soil water-salt regime, providing planned rice yield. Plot is located in Amudarya delta's† north part.† Climate is continental, relief-hilly with slope to south-west.†† Soils-meadow-desert strongly saline. Before irrigation ground water table was 3-10m with salinity 0.3-30g/l. Area is 45ha, land use efficiency is 0.71-0.83. Irrigation†† network†† in†† earthen†† channel.†† Distribution†† network consists of sites outlets (h=1.5m, drain-collectors (h=1.8m), in-farm collectors (h=2.5-3.0m); specific length is 44-47m/ha. In result of study rice irrigation norm components with regard for meadow-alluvial saline soils is found; rice optimal irrigation norm is†† calculated†† taking†† into†† account†† rooting†† zone†† (0-1 00cm) desalinization and hydro-chemical parameters. Rice water consumption norm is found and water salt balance is prepared.

Key words

Water consumption, water-salt balance, filtration, rice


Authors: A.R.ramazanov, E.Kurbanbayev, H.I.Yakubov Title: "Some issues of Amudarya lower reaches reclamation" Study of ecological-reclamation processes under different crops irrigation gives technical and technological recommendations on their management.