Summary |
Investigations related to improvement of water consumption
and soils water regime management as well as irrigated lands
productivity increase on a background of subsoiling by means
of irrigation stream selection and furrows length providing
equal soil moisture and water losses reduction.Experimental plot is located in Yavansky valley. Climate is sharply continental. Soils are dark sierosems,
heavy loam.On deep 30cm of surface the low permeable compacted
layer with thickness up to 10-20 cm is located which prevent
normal soil profile moisture on designed layer (0,7-1,0m)
requiring deep loosen. Experimental plot area is 15 ha. Source of irrigation is Vahsh river, water salinity
is 0,7 g/l, water turbidity is 0,5-1,5 g/l
The result of investigations showed that subsoiling
of irrigated lands increase the soil porosity as well as
moisture cumulation in soil. Effect of subsoiling is keeping
during three years with gradual filtration and soil permeability
reduction. Dependency of subsoiling influence on irrigation
technique parameters, irrigation regime etc is defined . |
Bibliography |
Author - N.K. Nosirov Title - “Improvement of reclamative technique of sierosem
soils development under irrigation system construction and
operation"
Fields and laboratory results on studying of subsoiling
influence on irrigation technique, irrigation regime, salts
content in soil profile were presented. |
