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Identification
code |
PP00197 |
Project
title |
Water
use optimization and water salt regime management on
a background of close horizontal drainage |
Project
location |
The
Republic of Uzbekistan, Khorezm oblast, Yangiarik rayon, “Pravda” collective farm. |
Rubric |
70.21.39;
70.03.21 |
Rubric
(SIC ICWC) |
01.45;
01.20.01.15 |
Project
duration |
1967-1975 |
Project
manager |
A.A.
Rachinsky., TIIIMSX
The Republic of Uzbekistan, 700000, Tashkent,
Kary-Niyaz-39 |
Summary |
Investigations
related to definition of reclamation efficiency of operational-reliability
drainage, its constructive elements in condition of
stratific floating earth by means of systematic observations
for water salt regime dynamic management on irrigated
sites of experimental plot with different depth systematic
drainage, distance between rows and constructive details.Territory
is located in old river valley which is formed by sediments
of AmuDarya river. Climate
is continental, sharply dry. Relief is hilly. Soils are
stratific floating earth, strongly saline. Ground
water depth 2-2,5m (vegetation period 1-1,5m), salinity
from 5-6 to 16-19g/l.Experimental
plot area is 303,7 haIrrigation
system is small distributors in earth canal. Drainage
is close horizontal by depth 1,5-2,0-3,0 m, specific
length about 30 m/ha. Irrigation
methods: for cultivated crops - furrows irrigation,
for grass - gravity irrigation, for rice - flood irrigation.
Plot is
equipped by measurement and accounting means.
Investigations
showed that necessary artificial drainability creation
forces leaching effect of irrigation water and provides
ground water evaporation reduction at the expenses of
ground water level lowering in the period of intensive
evaporation, providing optimal agricultural crops irrigation
and high efficiency of maintenance leaching. |
Key
words |
irrigation
regime; leaching; reclamation regime; desalinization;
irrigation water; ground water level; cotton; rice;
grass |
Bibliography |
1.
Author - M.S. Merishensky Title -
“ Investigations of close horizontal drainage”“Cotton production”, 1971 ¹12. Authors
- Kh. I. Yakubov, M.S. MerishenskyTitle - “Irrigation and drainage influence
on water salt balance of irrigated lands of Khorezm
oblast” Scientific Collection of SANIIRI, ¹ 156, 1978.
Soil water
salt regime and balance elements formation under influence
of intensive close drainage, leaching, leaching regime
in conditions of stratific soils and water head are
showed. |
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