节水灌溉Issue(9)：16-24,9.DOI:10.12396/jsgg.2025436
咸水补充灌溉对南疆棉田土壤水盐和棉花产量的影响
Effects of Supplemental Saline Water Irrigation on Soil Water-Salt Status and Cotton Yield in Southern Xinjiang Cotton Fields
摘要
Abstract
To investigate the effects of different saline water supplemental irrigation patterns on soil water-salt transport,nutrient content,and cotton yield.Using conventional freshwater irrigation(0.5~1.0 g/L)as the control(CK),six saline water supplemental irrigation patterns were established:G1(one application during bud stage at 9.9%of standard rate),G2(one application each during bud and flowering stages at 20%of standard rate),G3(two applications during bud stage and one during boll stage at 28.9%of standard rate),G4(twice during budding,once during flowering and boll development,40%of standard rate),G5(twice during budding,once during flowering,twice during boll development,51.1%of standard rate),and G6(saline water irrigation throughout the entire growth period,100%of standard rate).Field trials were conducted from April to October 2024.Results indicated that under the saline water supplemental irrigation pattern,the G3 treatment effectively optimized the spatial distribution of soil moisture.During the boll opening stage,soil moisture content in the 0~40 cm layer was significantly increased by 23.1%compared to the CK,while also suppressing excessive salt accumulation at the soil surface.Treatment G4 demonstrated the most pronounced effect on enhancing soil fertility,increasing organic matter and total nitrogen content in the 0~20 cm soil layer by 56.38%and 64.71%,respectively.Moderate saline water supplemental irrigation promoted cotton yield increase and improved irrigation water productivity.Treatments G1 and G2 increased yields by 8.66%and 7.57%,respectively,while irrigation water productivity improved by 8.21%and 7.46%.However,excessive supplemental irrigation in treatments G5 and G6 led to significant decreases in both yield and irrigation water productivity.Therefore,under conditions of scarce freshwater resources,it is recommended to use brackish water with salinity levels of 5.21~5.92 g/L for one supplemental irrigation during the bud stage or for one supplemental irrigation each during the bud and flowering stages.These two supplemental irrigation patterns achieve an relatively optimal balance between regulating water and salt,maintaining fertility,and ensuring yield,providing a theoretical basis for the safe utilization of brackish water resources in cotton fields in southern Xinjiang.关键词
棉花/咸水补充灌溉/盐分表聚/土壤理化性质/棉花产量Key words
cotton/saline water supplementary irrigation/surface salt accumulation/soil physicochemical properties/cotton yield分类
农业科技引用本文复制引用
郭佳琪,丁邦新,白云岗,周豪杰,柴仲平,曹彪,麦麦提艾麦尔·麦提图尔荪,张智博..咸水补充灌溉对南疆棉田土壤水盐和棉花产量的影响[J].节水灌溉,2026,(9):16-24,9.基金项目
新疆维吾尔自治区重大科技专项(2024A03006-3) （2024A03006-3）
新疆土壤与植物生态过程重点实验室开放课题(24XJTRZW05) （24XJTRZW05）
国家自然科学基金地区基金项目(52269017). （52269017）
