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Identification
Code |
PP00112 |
Project
title |
Study
of water-salt regime and balance of First stage of Karshi
steppe development |
Project
location |
The
Republic of Uzbekistan,
Kashkadarya oblast |
Rubric |
70.03.15;
70.03.21 |
Rubric (SIC ICWC) |
01.20.01.15; 01.20.01.10 |
Project
duration |
1975-1979 |
Project
manager |
V.G.Nasonov,
SPA SANIIRI, Uzbekistan, 700187, Tashkent, Karasu-4, 11 |
Summary |
Research
was directed to soil water-salt regime management strengthening
on background of different types of drainage; irrigation
water use improvement and recommendations development
on technical decisions correction. Climate is continental.
Soils: sandy loam, loam, clay often with high salt content.
Ground water table is below 5m, salinity -10-16g/l sulfate-chloride
and chloride- sulfate. Irrigated area is 96423ha. Irrigation
network: concrete flumes (efficiency 0.96-0.98). Inter-state
network is lined by concrete (efficiency 0.96-0.97). Average
specific length 22m/ha and lined canals-2.5m/ha. Water supply
is provided from Karshi main and Ulyanov canals. Drainage
network is presented by vertical, horizontal subsurface
and combined drainage. There are 65 vertical drains from
136 planned. Subsurface drainage length is 1348km, depth-3-3.5m.
spacing-200-250m. Farm is equipped by means of water and
salt account. Set of recommendations has been developed
on soil water-salt regime management under land development.
Proposals are given on technical decisions correction. |
Key
words |
Soil
salinization, water-salt balance, drainage outflow,
total evaporation, water supply, cotton |
Bibliography |
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