Precipitation in Uzbekistan is limited, so irrigation must be used widely in local agriculture. However, irrigation is carried out with inadequate drainage systems that result in salt damage, as the re-accumulation of salt from irrigation water on the soil surface; thus, soil salinization becomes severe in irrigated agricultural areas. To address this problem, leaching has been recommended locally. Nevertheless, local farmers input excessive irrigation water, and inadequate drainage systems are attributed to salt damage. Cyanobacteria are salt-tolerant microorganisms with photosynthetic and N₂-fixing abilities, so inoculation of cyanobacteria into salt-affected soil would be effective for its bioremediation. In this study, we isolated cyanobacteria from several local soils in Uzbekistan and evaluated their salt tolerance. The soil electrical conductivity (EC) ranged from 19 to 1970 mS m⁻¹, and most of the soil had a high EC. Cyanobacteria isolated from Navoi in north-western Uzbekistan grew better under NaCl conditions than under conditions without NaCl. This result indicated that Navoi strains were able to grow under high EC conditions and could be used for salt-affected soil remediation. A pot experiment using the cyanobacterium Navoi strain was conducted to evaluate its restoration abilities in degraded salt-affected soil. Inoculating with the Navoi strain reduced salt stress to the same extent as leaching by decreasing soil Na⁺ and EC, which increased inorganic soil nitrogen by increasing soluble organic nitrogen from decomposed cyanobacteria in soil and fixing atmospheric nitrogen by cyanobacteria. These results suggested that cyanobacterial application might be effective for salt-affected soil remediation in Uzbekistan.

乌兹别克斯坦的降水有限，因此灌溉必须在当地农业中广泛使用。但是，由于灌溉系统排水系统不足，导致盐分受损，因为灌溉水中的盐分会重新积聚在土壤表面。因此，在农业灌溉地区土壤盐碱化变得严重。为了解决此问题，建议在本地进行浸出。然而，当地农民投入了过多的灌溉水，排水系统不足归因于盐分的破坏。蓝细菌是具有光合作用和N ₂的耐盐微生物固定能力，因此将蓝细菌接种到受盐影响的土壤中将对其生物修复有效。在这项研究中，我们从乌兹别克斯坦的几种当地土壤中分离了蓝细菌，并评估了它们的耐盐性。土壤电导率（EC）为19至1970 mS m ^-1，并且大多数土壤的EC较高。从乌兹别克斯坦西北部的纳沃伊分离出的蓝细菌在NaCl条件下的生长比在没有NaCl条件下的生长更好。该结果表明Navoi菌株能够在高EC条件下生长，并且可以用于盐影响的土壤修复。进行了使用蓝细菌Navoi菌株的盆栽试验，以评估其在退化的受盐影响的土壤中的恢复能力。用Navoi菌株接种可以减少盐分胁迫，其程度与通过减少土壤Na ^+的浸出程度相同。EC和EC，通过增加土壤中分解蓝细菌的可溶性有机氮和通过蓝细菌固定大气中的氮来增加无机土壤氮。这些结果表明，应用蓝细菌可能对乌兹别克斯坦的受盐影响的土壤修复有效。