土壤改良剂对柴达木盐碱地燕麦生产性能的影响

打开文本图片集

中图分类号：S544.9 文献标识码：A 文章编号：1007-0435（2026）04-1483-09

Abstract：The Qaidam Basin is a typical inland arid saline basin in China，characterized by high soil salinity and harsh plant growth conditions.Soil amendment is therefore of great significance for the rational development and utilization of saline-alkali land.This study focused on oat （Auena satiua） grown with theapplication of four soil amendments （single superphosphate，potassium humate，cattle manure+desulfurized gypsum，and atapulgite） to analyze oat production performance and nutritional quality，aiming to identify the ideal soil amendment for saline-alkali soils in the Qaidam Basin.The results showed that oat treated with single superphosphate achieved greater plant height，stem diameter，and forage yield，measuring 107.57cm ， 3.47mm ，and 1001.00g⋅m-2 ， respectively. Oat treated with potassum humate exhibited higher crude fat and water-soluble carbohydrate content，at 3.15% and 25.40% respectively，while its acid detergent fiber and neutral detergent fiber content were lower.Piecewise Structural Equation Modeling（SEM） analysis indicated that the soil amendments affected nutritional quality by influencing forage yield and stem diameter.The TOPSIS multi-criteria decision model demonstrated that oat treated with single superphosphate had superior production performance and nutritional quality，which is the ideal soil amendment for application in saline-alkali soils of the Qaidam Basin.

Key words：Soil amendments;Qaidam Basin; Oat; Nutritional quality ;Comprehensive evaluation

盐碱地既是制约全球农业可持续发展进程中的关键因素，又是具有多重开发价值的特殊土地资源[1-2]。（剩余15150字）