Summary |
Investigations
related to study of influence various natural and technical-organizational
factors on open collector drainage system efficiency reduction,
establishment of regularities of collector drainage system
failures and its influence on indices of reclamative conditions
of irrigated lands. Soils are sierozem-meadow,
slightly and medium saline. Ground water depth from 1,5-2
to 3-4m, slightly and strongly saline, sulfate-chloride
and chloride-sulfate type.Experimental
plot area is 144,02 ha. Water supply
through Dustlik canal. On-farm net length in concrete lining
and flume -14,7% , specific length -24,1 m/ha, efficiency
-0,7-0,73.Horizontal
drainage specific length -28,6 m/ha, drainage depth -1,93-2,66m.
Assessment
of collector drainage system (CDS) efficiency is given.
Taking into account regularities of CDS efficiency reduction
and predicted calculations of water salt balance, recommendations
on terms and volumes of CDS cleaning in Gulistan rayon are
developed. |
