| |
Identification
code |
PP00066 |
Project
title |
Soil water-salt regime management within seepage zone in West Fergana on background of vertical drainage and pumped water
utilisation for irrigation |
Project
site |
Republic of Uzbekistan, Fergana province, Besharyk district, state farm
“Besharyk” |
Rubric |
70.03.15;
70.03.21 |
Rubric
(SIC ICWC) |
01.20.01.10;
01.20.01.15 |
Project
duration |
1970-1980 |
Project
manager |
Abbas
Usmanov, SPA SANIIRI
Karasu 4/11,
Tashkent, 700187, Republic of Uzbekistan |
Summary: |
Prevention of soil salinization and waterlogging
and the irrigated land productivity improvement are based
on increased drainability through the combination of vertical
and horizontal drainage.
Soils are comprised
by sandy loam and light and middle loam. Water table is
1,5-2,0 m. Average annual salinity is 0,4-17,6 g/l, while
chemical composition is sulphate-hydrocarbonate. Soils within
the pilot site are mainly non-saline. Pilot site's area
is 565 ha. There are 5 vertical drainage wells with depth
of 32.5-48 m.Drainage network
is open horizontal with length of 20,3 m/ha. Drain depth is 2.5-3.0 m, while depth of
collectors is 3.0-3.5 m. The site was
equipped with necessary measuring devices.Long-term (1970-1980)
research resulted in the optimal reclamation regime and
the appropriate operation regime for drainage network, which
reduces consumption of irrigation water and labor.
Cotton yield
increased from 2,79 t/ha (1970) to 3,5 t/ha (1975). Water
consumption per 1 cwt reduced from 287,7 m3 to
222,03 m3. |
Key
words |
Vertical
drainage, efficiency, leaching |
Bibliography |
Authors:
G.Yeremenko, A.Usmanov, T.BekmuratovTitle: Study
of vertical and horizontal drainage system conjunctive operation
(SANIIRI transactions "Technical measures to combat
salinization of irrigated lands", No 143,
Tashkent, 1974, pp.33-45).Main parameters
of wells, their operation regime, soil water-salt regime
change, and drainage modulus change are considered. Possibility
of avoiding of part of open (on-farm) drains and collectors
and the increase of land use efficiency up to 5% are shown.Authors: G.Yeremenko,
A.Usmanov, T.BekmuratovTitle: Pumping
from vertical drains regime (Hydraulic engineering, No2,
1974, pp.75-81)
Main indices
of VDS operation, operation scheduling, VDS efficiency and
its connection with water use regime. |
|
|
|
