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Identification
Code |
PP00188 |
Project
title |
Experimental-production
plots of lands leaching by systems of closed and open
drainage in Tytov's state farm #6 of new Hunger steppe
zone. |
Project
location |
The Republic of Uzbekistan,
Syrdarya oblast, Sh. Rashidov rayon, Tytov's state farm
#6. |
Rubric |
70.21.39 |
Rubric (SIC
ICWC) |
01.45 |
Project
duration |
1966-1970 |
Project
manager |
Baturin
G.E., SPA SANIIRI The Republic of Uzbekistan, 700187, Tashkent,
Karasu-4, 11 |
Summary |
Studies
are dedicated to development of secondary saline lands
by summer capital leaching on background of rice crop,
intensification of permanent closed drainage drainability
by temporary drainage, establishment of water-salt regimes
formation dynamics of leached lands, workability of
permanent closed drainage and temporary drains, flooded
areas impact on adjacent areas as well as lands reclamation
state maintenance. Climate is continental. Relief is
smooth, planned. Lands of EPP were in agricultural crop
rotation, but they were estranged because of intensive
processes of secondary salinization. Soils - serozem-meadow,
salt spots, chloride-sulfate type. Ground water - on
depth 1.6-2.8 m, salinity degree 24-42 g/1, sulfate-chloride
and chloride-sulfate type. EPP area (net) for leaching
is 25 ha (1966), 50 ha (1967), 29 ha (1968) Irrigation
network - flume, efficiency 0.95-0.98. Water allocation
in checks from earthen channels, efficiency 0.8-0.85.
Collector-drainage network open collectors, closed drains
with depth 2.2-3.8 m, temporary drains - 0.6-1.0 m.
EPP is equipped by observation devices. Leaching was
carried out in summer period through rice sowing under
permanent water supply to maintain permanent layer
in checks. Main result of studies is introduction of
about 1.8 th. ha strongly saline lands in agricultural
rotation according to developed recommendations. Capital
leaching costs are compensated at the expense of rice
production, which crop yield capacity is 4.0-5.3 t/ha.
Cotton crop yield capacity on leached lands - 2.4-2.8
t/ha. |
Key
words |
Saline
soils leaching; closed drainage; soils desalinization;
salinity; ground water; rice; cotton. |
Bibliography |
1.
Authors - Ramazanov V.A., Lazaridis V., Baturin G.E.
Title - "Summer leaching of lands on background
of rice crop" "Agriculture of Uzbekistan",
1969, #5 Results of studies of water balance formation,
ground water regime, salt content in soils under saline
lands leaching are given. 2. Authors - Yakubov Kh.I.,
Ramazanov V.A., Lazaridis V., Baturin G.E. Title: "Experience
of saline lands leaching through rice sowing in Hunger
steppe" Results of field experimental studies of
soil water-salt regime formation under leaching
and their agricultural use are given. Changes of
drainage and ground waters salinity, soil salinity are
shown. Feasibility study of rice crop use under leaching
is given. |
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