| |
Identification
Code |
PP00165 |
Project
title |
Leaching
through flooded rice on the background of permanent horizontal
drainage in combination with temporary drainage or without
it. |
Project
location |
The
Kyrgyz Republic, Chu oblast, Moscow rayon, "Besh-Terek" state farm. |
Rubric |
70.21.39 |
Rubric (SIC ICWC) |
01.45 |
Project
duration |
1972-1977 |
Project
manager |
Duyunov
I.K., KyrgNHGiM The Kyrgyz Republic, 720055, Bishkek, Toktonaliyev's str., 4. |
Summary |
Studies
are dedicated to development of salts and strongly saline
lands' desalinization technology and technique through flooded
rice crop with account for intense area drainability. Relief
is plain with slope 0.0023 from south to north. Soils -
gray desert-meadow, initially saline. Salinity degree of
0-1 m layer is strongly saline, sulfate-calcium-sodium type.
Leaching area is 76 ha. EPP is limited from east and west
by open collectors on depth 4.5 m, from south and north
- flume canals. Parallel to collectors 4 permanent horizontal
drains were constructed on depth 3.5 m. EPP is divided
into 5 fields with 15- Г6 checks in each drain. Studies
were carried out on 3 fields. On base of carried out studies
it was established that: saline lands leaching through sowing
of flooded rice has positive and negative sides; positive
is high leaching effect and rice crop yield already in the
first year; negative is this method of leaching is profligate
regarding land, water, and labor resources, promotes toxic
salts removal through drainage run-off and surface water
salinity increase that is reflected on environment of areas
below. |
Key
words |
Leaching;
water-salt balance; saline soils; desalinization; drainage
flow; rice. |
Bibliography |
1.
Authors - Shesler E., Popova S., Kirn V. Et al. Title -
"Experience of saline soil production leaching through
ice crop" Collection of research papers of Dokuchayev's
Soil Institute, Moscow, 1981 Leaching peculiarities through
rice are described in conditions of saline lands in "Besh-Terek"
state farm.
3. Authors - Shumakov В., Shesler E.,
Kim V. Et al. Title - "About rice sowing impact on
adjacent area reclamation state". KyrgNIIGiM Collection
of research papers "Issues of development and operation
of automated hydro-reclamation objects", Frunze, 1990. Flooded rice sowing impact
applied for strongly saline lands and' salts leaching on
adjacent area reclamation state is considered. Absence
of rice sowing impact under collector-drainage network proper
operation is proved. |
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