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Identification code |
PP00129 |
Project title |
Study of optimal parameters of gardens low
-pressure drip irrigation with turbid water |
Project location: |
The Republic of Tadjikistan, Khatlon oblast, Kolkhozabad rayon, Kolkhozabad
scientific-research polygon, SPA "TadjikNIIGiM" |
Rubric |
70.21.35 |
Rubric
(SIC ICWC) |
01.30.03 |
Project duration |
1983 - 1991 |
Project Manager |
G. Akhmedov, TadjikNIIGiM SPA
The Republic of Tadjikistan, 734001, Dushanbe, Shamsi Str., 5/1 |
Summary |
Goal of investigations is development and
experimental- production control of low-pressure drip
irrigation technology of horticulture on around-stem furrows
without fine water cleaning with the use as water outlets
polyethylene tubes 4 mm diameter.Plot is located in Vakhsh valley. Climate is sharply continental.Soils are made of non-saline, slightly loamy
subsident loess.Ground waters are at a depth more than 80
m. Plot irrigation is implemented from irrigation
canal with salinity less than 0.7 g/l of hydrocarbonate-calcium
type, with suspended particles content 1.5-3.0 g/l.Relief is hilly.Plot area is 13 ha (net).Irrigation system consists of main, distributive
and irrigation pipelines equipped with tubes-water outlets.
As a result of long-term investigations
it was determined that low-pressure drip irrigation can
be used in soils of different grade and permeability; fresh
water is preferable with turbidity up to 3,5 –4,0 mg/l.
Recommendations on necessary slopes and
pipe diameters are given. Hydraulic calculation methodology
of irrigation network for various conditions is developed. |
Key words |
drip irrigation, ring furrow; water outlets:
irrigation network, hydraulic characteristics,
irrigation regimes; orchards; vineyards. |
Bibliography |
1. Authors: G. A. Akhmedov, R. R. Rakhmatilloyev,
M. N. Isoboyev Title: “Subtropical crops irrigation on subsident
hilly lands of the South
Tadjikistan "Land reclamation in Tadjikistan",VNIIGiM, 1988Results of field and laboratory investigatios
for determination of irrigation network parameters are given. Data about
irrigation depth and norms for peach, almond
and pomegranate on hilly lands are presented. |
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