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(S_(1),3 g·kg^(-1)),中度盐碱土(S_(2),5g·kg^(-1)),重度盐碱土(S_(3),7 g·kg^(-1))]和4种脱硫石膏施用深度[FGD_(0)(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(S_(0)FGD_(0))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(S_(3))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。
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(S_(1),3 g·kg^(-1))],medium saline-alkali soil(S_(2),5 g·kg^(-1))and heavy saline-alkali soil(S_(3),7 g·kg^(-1))and four kinds of desulfurization gypsum application depth[FGD_(0)(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(S_(0)FGD_(0))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(S_(3)),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 saline-alkali land.
作者
合佳敏
张永清
梁萍
王丹
严翻翻
陈薇薇
景茂雅
HE Jiamin;ZHANG Yongqing;LIANG Ping;WANG Dan;YAN Fanfan;CHEN Weiwei;JING Maoya(College of Life Sciences,Shanxi Normal University,Taiyuan 030031,Shanxi,China)
出处
《草业科学》
北大核心
2025年第1期152-161,共10页
Pratacultural Science
基金
国家自然科学基金项目(31571604)
山西省研究生创新项目(2022Y492)。
关键词
盐碱胁迫
藜麦
脱硫石膏
根系
抗氧化酶活性
渗透调节物质
干物质量积累
saline-alkali stress
quinoa
desulfurized gypsum
root system
antioxidant enzyme activity
osmotic adjustment substance
dry matter accumulation
作者简介
第一作者:合佳敏(1997-),女,山西应县人,在读硕士生,研究方向为植物生理生态学。E-mail:18536068816@163.com;通信作者:张永清(1964-),男,山西临汾人,教授,博士,研究方向为土壤学及植物生理生态学。E-mail:yqzhang208@126.com。
