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Identification
code |
PP00071 |
Project
title |
The
optimal parameters of furrow irrigation technique and technology
under the pipe distribution and irrigation system in «Samgar»
and «Khamzaaliev» state farms |
Project
site |
Republic of Tadjikistan, Leninabad province, Khudjand rayon, Samgar and Khamzaaliyev
state farms |
Rubric |
70.21.33;
70.21.35 |
Rubric
(SIC ICWC) |
01.30.03 |
Project
duration |
1963-1972 |
Project
manager |
N.K.Nurmatov,
Tadjik Agrarian University
Rufaki avenue, 146, Dushanbe, Republic of Tadjikistan |
Summary: |
The
study dealt with mechanization of the irrigation process
and with irrigated lands productivity increase. The objectives
were to find the shortcomings of surface irrigation system,
to study the elements of furrow irrigation technique, to
determine water used for evapotranspiration, to find the
irrigation uniformity coefficient, to develop parameters
of subsurface distribution and irrigation system for gardens
and vineyards and its widespread adoption.The state farms
are located within submountain plain. The relief is slightly
corrugated. Soils are stony.Water table is
more than 20 m. Irrigated area is 10000 ha, while land use
efficiency is 0,8.Water is supplied
from Kayrakkum reservoir by concrete lining canals. Canals
of the on-farm system are mostly earthen and partially concrete-lined.Experimental
plot of 1200 ha has subsurface pipe network. Diameter of
irrigation pipes is 100-200 mm, while diameter of outlets
is 10-16 mm.As a result it
was established that the irrigation norm was 6500-700 m3/ha on the experimental plot (EP) and 15000-20000
m3/ha on the control
plot (CP). Surface run-off was 10-12% (EP) and 20-25% (CP)
respectively. The optimal furrow
length was 100-200 m depending on the degree of soil stoniness;
optimal size of irrigation stream was 0,3-1,0 l/sec. Labor productivity
was 1 ha/day-shift (surface system) and 2,5-3,0 ha/day-shift
(pipe system).
Vine yield was
9-11 t/ha (experimental plot) and 6-7 t/ha (control plot). |
Key
words |
Irrigation
technique, irrigation norm, furrow irrigation, vineyard |
Bibliography |
Author(s):
V.A. Surin, N.K. NurmatovTitle: Vine irrigation
from a subsurface system, Moscow, «Kolos:, p. 167
Publication details:
Conditions of the vine growing and prospective regions for
its cultivation are described. Water-physical properties
of stony soils, irrigation regime and vine water consumption
are shown. Analysis and finding the shortcomings of existing
vine irrigation methods and furrow irrigation technique
are made. For elimination of these shortcomings different
types of a subsurface irrigation system are proposed. Design,
construction and operation of a subsurface pipe system are
considered. Profitability of its introduction on the area
of 1200 ha is proved. |
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