U juraev1, b atamuradov

Object of research: Experiments conducted in 2020-2021 in the farm "Mavlon Sattor" Kagan district of Bukhara region in the conditions of difficult reclamation, moderately saline, heavy mechanical sand, gypsum soils. Experiments were carried out on the cultivation of Bukhara-102 variety.
The volume of soil in the 0-100 cm layer of the selected experimental area was 1.52 g/ccbm, the boundary field moisture content was 65.6%, and these soils belong to the type of heavy soils with mechanical composition. lib, the soil contains gypsum crystals, grains.
In the study field, the distance between ditches was 250 meters, the depth of ditches was 3.2-3.8 meters, and the flow of ditches was 0.38 cbm/day during the growing season. ha, and 0.22 cbm/day during the non-vegetation period. This change in water content is explained by the irrigation norms applied to the field when irrigating agricultural crops during the growing season.
The purpose of the study: the mechanical composition of Buxoro region, prone to salinization and salinization, consists in improving the melioration condition of heavy, gypsum soils, increasing their efficiency, deep loosening of the soil and determining the effect of cotton Buxoro-102 varieties on water conservation, productivity of deep softeners.
Methods of the study: field, laboratory research, agrochemical analysis, biometric measurements, phenological observations, statistical analysis cotton selection, seed cultivation "methods of conducting field experiments" of the Research Institute of agrotechnologies (Uzpiti 2007 year), carried out according to the accepted methods. The accuracy and reliability of the information obtained is universally accepted B.A.With the help of dospekhov multi-factor method, mathematical and statistical analysis was carried out[5,9,16,23,29,32].
Objectives of the study:
As a result of deep softening on medium and strong saline soils, the effectiveness of salt washing was determined.
As a result of deep softening on strong and moderately saline soils, the effect of saline washing norms and deadlines on the water-physical properties of the soil was studied.
In strong and moderately saline soils, the meliorative state of the soil and the effect of deep softeners on its fertility were studied.
The effect of deep softeners on the growth, development and productivity of cotton has been studied.