U juraev1, b atamuradov

Results of the experiment: After a deep softening in the experimental area, from the second decade of December 2020 year to the second decade of February 2021 Year, 3 salt washing operations were carried out. As shown, in the first variant, the first saline solution was 2560 cbm/ha, the second and third saline solution was 2050-1875 cbm/ha and seasonal salinity 6480 cbm/ha. In the second and third brine wash to 2280 cbm/ha in the first brine wash to 1640-1295 cbm/ha in the second and third brine wash to 5210 cbm/ha in the seasonal brine wash to 1980 cbm/ha in the first brine wash to 1620-1235 cbm/ha in the second and third brine wash to 4835 cbm/ha in the the second and third salt washing was 1680-1270 cbm/ha, the seasonal salinity standard was 5100 cbm/ha, the second and third salt washing process was 5 variant was 1895 cbm/ha in the first salt washing was 1620-1230 cbm/ha, and the seasonal salt washing process rate was 4745 cbm/ha. This is less than 1470 cbm/ha in 2 variants, -1645 is provided with 3 cbm/in 1 variant, 1380 is provided with cbm/ha 1745 with (control) compared with 1 (control).


Table 2 Salt washing, watering and harvesting on the experimental field

Variants	Seasonal salt washing rate is cbm/ha	Seasonal Irrigation rate is cbm/ha	Cotton yield t/ha
1 (control)	6480	5821	2,95
2	5210	5284	3,34
3	5010	5100	3,47

Bukhara-102 varieties of cotton as shown in the experiments on irrigation (Table 2), in the first irrigation to 1450 cbm/ha in the second irrigation to 1180 cbm/ha in the third irrigation to 1090 cbm/ha and in the fourth and fifth irrigation to 1090-1011 cbm/ha, the seasonal irrigation norm was 5821 cbm/ha. In the 2nd variant, seasonal irrigation accounts for 1330 cbm/ha in the first irrigation, 1120 cbm/ha in the second irrigation, 985 cbm/ha in the third irrigation, and 939-910 cbm/ha in the fourth and fifth irrigation. and the seasonal irrigation norm was 5284 cbm/ha. In Variant 3, the first irrigation is 1280 cbm/ha, the second irrigation is 1120 cbm/ha, the third irrigation is 965 cbm/ha, the second and fifth irrigation is 930-805 cbm / ha. half watered 5100 cbm/ha cotton 5 times throughout the season.

When the cotton yield was analyzed at the end of the growing season, in the first variant of the observations, the seedling thickness of the plant was 82.000 Bushels/ha and the yield was 2.95 t/ha. 2-in the experiment, the seedling thickness was 88.000 Bushels/ha, the yield was 3.34 t/ha. Also in the third variant, the thickness of the plant seedlings increased to 89 thousand t/ha, productivity increased to 3.47 t/ha compared to control.
This means that 537 to 721 cbm/ha of water is spent on the variant, 3 to 1 (control) less water on the variant.
In carrying out chemical analysis of the experimental area before and after washing of the brine, the dry residue in the driver and lower driver layers (Table 3) and the amount of chlorine ion was 0,010 in the driver layer, compared to Variant 1 (control). the amount of chlorine ion to 0,003% of the driving layer, and the amount of chlorine ion to the driving layer decreased by 0,001% to 0,003% of the driving layer, in Variant 3, the amount of chlorine ion decreased by 0,012% to 0,007% in the driving layer, and the amount of chlorine ion decreased by 0,002% in the in the drive layer, analysis showed a decrease of up to 0.003% in the drive layer.