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Identification code |
PP00083 |
Project title |
Management of irrigation lands water-salt regime and
vertical drainage system operation in Djetisay and Kirov
rayon of Chimkent oblast of the Republic of Kazakhstan |
Project location: |
the Republic of Kazakhstan, Chimkent oblast, Kzylorda massif, Djetisay and Kirov rayon |
Rubric |
70.03.21; 70.23.39.15 |
Rubric (SIC ICWC) |
01.20.01.15; 01.45.01.10 |
Project duration: |
1989 – 1991 |
Project Manager |
R.K. Ikramov, SPA SANIIRI
The Republic of Uzbekistan, 700187, Tashkent, Karasu-4/11 |
Summary |
The goal of investigation is to assess impact of vertical
drainage systems operation regime, its technical state,
irrigation regime of crops and leaching, irrigation water
quality on ecologic- reclamation processes for large irrigation
massif in Chimkent oblast; to develop methodological and practical recommendations on
improvement of reclamation regimes and vertical drainage
system operation regime, acceptable for the nearest 3 -5
years.Massif territory is located within alluvial plains
of SyrDarya river. Relief is smooth. Soils are made of clayey
sand, light and medium loam. Climate is sharply continental.
Water table is 1,2 -1,5 m (spring) and 2,5 m (autumn). Salinity
is 5 -10 g/l. Irrigated land area of Djetisay rayon is 38,5
th.ha (net), land use efficiency is 0.69; of Kirov rayon
is 37 th.ha (net), land use efficiemcy is 0.61.Irrigation
network is in the earth channel.Collectors specific length is 5 -8 m/ha. 285 wells
were installed in Djetisay rayon and 273 wells- in Kirov rayon, with a depth of 55 -75 m and gravel-sand filters. Recommendations
on reclamation regime improvement and vertical drainage
system operation regime were developed providing:- water supply for irrigated field in amount of 8300
m3/ha;- pumping water volume of 1800-2000 m3/ha;- ground water table regulation within 2.2 - 2.9 m
(spring), 1,9 -2,3 m (summer); 3,1 -3,4 m (autumn);- salt reserve reduction in the aeration zone down
to 8 -10 t/ha.
Indicated measures allow to stimulate reclamation processes,
increase vertical drainage system workability and crop
yield. |
Key words |
drainage systems, soils, vertical drainage; water-salt
regime; irrigation water |
Bibliography |
1. Authors: Kh.I.Yakubov, R.K. Ikramov, Sh.S. Yusupov,
Ph. UmarovaTitle: Recommendations on regime of vertical drainage
system operation in Djetisay and Kirov rayonsof Chimkent oblast. Tashkent, SANIIRI, 1990
Actual reclamation processes were studied in 1989 -1990,
results of full-scale investigation of vertical and open
horizontal drainage were presented. On a basis of predicted
water-salt balance the recommendations were developed on
reclamation situation improvement and vertical drainage
system operation regime. |
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