The effect of deep softeners on irrigation, salt washing and cotton yield on soils with heavy mechanical composition

Abstract

In the article, studies were conducted on the economy of saline soils quality saline washing and irrigation water by deepening of medium coarse soils with a mechanical content of melioration, plaster, salinity in the conditions of Bukhara region. In experiments, basically, there were three ways to soften the field: plowing in the first experiments at 35 cm, plowing in the second experiment at 60 cm, and plowing in the third experiments at a depth of 80 cm. During the experiments, in the first variant of the studies, the norm of salt washing was set to 6480 cbm/ha, in the second variant to 5210 cbm/ha and in the third variant to 5010 cbm/ha. First of the studies in irrigation of Bukhara 102 varieties, that is, in the control variant to 5821 cbm/ha, in the second variant to 5284 cbm/ha and in the third variant to 5100 cbm/ha. Watered 5 times during the season. At the same time, high quality cotton was harvested due to the increase in cotton yield to 0.39 t/ha in the variant 2 and 0.129 t/ha in the variant 3 compared to the control, and the land reclamation situation improved. the amount of chlorine ion in the active layer is 0.003 in the variant 2 compared to the control. The amount of dry residue decreased by 0.058% in the variant 2 and the amount of dry residue by 0.063% in the variant 3.