【摘要】 土壤盐碱化限制了农业发展,亟需采取有效的措施以提高该类土地的生产潜力。本研究以‘陇藜4号’藜麦（Chenopodium quinoa）为试验材料,采用随机区组设计,设置3种盐碱化土壤[轻度盐碱土(S1,3 g·kg^-1),中度盐碱土(S2,5g·kg^-1),重度盐碱土(S3,7 g·kg^-1)]和4种脱硫石膏施用深度[FGD₀（不施加）,FGD_0-10（0-10 cm施加）,FGD_0-20（0-20 cm施加）,FGD_0-30（0-30 cm施加）],以无盐碱不添加脱硫石膏（S₀FGD₀）为对照,探究不同土层施加脱硫石膏对盐碱胁迫下藜麦农艺性状、生理参数及产量的影响。结果表明:轻度盐碱（S₁）环境能够促进藜麦地上和根系的生长,其抗氧化酶活性、渗透物质含量、根系活力及产量均有所提高。而在重度盐碱（S₃）环境下,藜麦的农艺参数和生理参数及产量显著下降,严重限制了其生长发育（P<0.05）。脱硫石膏作为盐碱化土壤改良剂,在0-30 cm土层施加能显著提高藜麦农艺参数、抗氧化酶活性、根系活力及产量,并减少渗透物质的积累（P<0.05）。本研究结果为盐碱地种植藜麦提供了科学依据。更多还原

【Abstract】 Soil salinization impedes agricultural development,and effective measures to improve productivity of such soils must be developed and implemented.In this study,we utilized Longchenli No.4 as a test material to investigate the impact of three kinds of saline-alkaline soil [mild saline-alkali soil(S₁,3 g·kg^-1),medium saline-alkali soil(S₂,5 g·kg^-1) and heavy saline-alkali soil(S₃,7 g·kg^-1) and four kinds of desulfurization gypsum application depth [FGD₀（not applied）,FGD_0-10（0-10 cm applied）,FGD_0-20（0-20 cm applied） and FGD_0-30（0-30 cm applied） on agronomic traits,physiological parameters,and yield of quinoa under salt-alkali stress.A control group without saline-alkali stress and desulfurized gypsum application（S₀FGD₀） was included.The results showed that the low saline-alkali environment（S₁） promoted the growth of Chenopodium quinoa above ground and root and increased antioxidant enzyme activities,osmotic substances,root activity,and yield.Conversely,in high salinity and alkali environment（S₃）,the agronomic and physiological parameters and final yield of quinoa decreased significantly（P <0.05）,consequently inhibiting the growth and development of quinoa.The application of desulphurized gypsum as an alkaline soil amendment 0-30 cm away from the soil surface significantly improved the agronomic parameters,antioxidant enzyme activity,root activity,and yield of quinoa and reduce the accumulation of osmotic substances（P<0.05）.This study provide scientific basis for the introduction of quinoa in salinealkali land.更多还原