Efficiency of appropriate irrigation system of cotton and winter wheat in water scarce conditions of Uzbekistan

Abstract

Abstract In this article, the granularity of experimental field soils was 2.52-3.25%, microaggregates were 96.7-97.4%, respectively, in the 40, 60 and 80% water supply, respectively, the volume mass was 0.15 in the 40% water supply, 0.12 g/cm 3 at 60% water supply and 0.10 g/cm 3 at 80% water supply and changes in water permeability in the order of irrigation, soil moisture at 80% water supply of cotton 80-80- At 60%, the norm of seasonal irrigation in the 1-3-0 system is 3000 m 3 /ha, at a water supply of 40% of sunflower 0-1-0 and 0-2-0 irrigation when the soil moisture is 70-70-60% relative to the limited field moisture capacity in the system, the total irrigation rate is 620-1100 m 3 /ha, in the water supply of 60% of winter wheat, when the soil moisture is 70-70-60% compared to Limited field moisture capacity, in the 0-3-0 irrigation system, the seasonal irrigation rate is 2005 m 3 /ha, in alfalfa limited field moisture capacity in water supply, seasonal irrigation norm Information on irrigation procedures for 1996 m 3 /ha is provided.