THE EFFICIENCY OF BIOMELIORATION OF SALINE SOILS IN CONDITIONS OF A SHORTAGE OF WATER RESOURCES

The article presents the research results on the impact of global climate change on Uzbekistan, increasing water scarcity, reclamation of irrigated lands, increasing soil salinity, reducing their negative effects, including the effectiveness of biological land reclamation. In the case of Syrdarya region, where climate change and water scarcity have a significant impact and irrigated lands are prone to complete salinization, biomeliorant plants after winter wheat – White corn (Sorghum Moench) and Mung (Vigna radiata) are affected by salinity and nutrient regimes. As a result of research to determine the norms and timing of soil salinity leaching in areas where biomeliorant plants are grown: saline leaching standarts in the experimental areas are 3278 - 3800 m3 / ha in the average saline winter wheat, 2380 (white corn) and 2500 (mung) m3/ ha in the replanted area, in the highly saline area was found to be 4507 - 4731 m3 / ha, 3000 (white corn) and 3340 (mung) m3 / ha, respectively, according to the above crop. Saline leaching at the above rate provided complete leaching of soil salts from the 1.0 m layer and reduced chlorine ion content to 0.01-0.02%, saving 25-30% of water compared to accepted saline leaching standards.