土壤-植物系统中硒的生物有效性及其影响因素研究进展  

Research progress on bioavailability and influencing factors of selenium in soil-plant systems

作　　者：杨忠兰 翟凡 温莉 颜蒙蒙 肖嬴 张永浩 姚锋先[1] 曾希柏[2] YANG Zhonglan;ZHAI Fan;WEN Li;YAN Mengmeng;XIAO Ying;ZHANG Yonghao;YAO Fengxian;ZENG Xibai(National Navel Orange Engineering Research Center/School of Life Sciences,Gannan Normal University,Ganzhou 341000,China;Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]赣南师范大学国家脐橙工程技术研究中心/生命科学学院,江西赣州341000 [2]中国农业科学院农业环境与可持续发展研究所/农业农村部农业环境重点实验室,北京100081

出　　处：《农业资源与环境学报》2024年第2期464-472,共9页Journal of Agricultural Resources and Environment

基　　金：国家自然科学基金青年科学基金项目(42207042);江西省教育厅项目(GJJ211445);江西省重点研发计划项目(20223BBF61008);赣南师范大学博士科研启动基金项目(BSJJ202125,BSJJ202309)。

摘　　要：硒的生物有效性是决定硒在土壤-植物系统中转运、积累的关键因素,然而目前关于该方面研究进展还缺乏系统的总结和论述。本文结合赣南富硒脐橙调查研究结果,以硒在土壤-植物系统中的运移为切入点,系统总结和论述了硒在土壤-植物系统中的氧化-还原、吸收、转运过程,探讨了土壤理化性质、微生物、施肥、农艺管理和植物生长阶段等对硒生物有效性和迁移的影响,并提出未来硒的研究热点:土壤微生物活性与硒生物地球化学循环的耦合关系;植物生长、果实品质与硒代谢相关的分子机制;结合同位素示踪技术和薄膜扩散梯度(DGT)技术原位探究硒在生物地球化学中的归趋。本综述可为土壤硒生物有效性调控、植物体系中硒的有效积累和农艺生物强化富硒措施方面的研究提供理论参考。Bioavailability of selenium is a key factor in determining the transport and accumulation of selenium in soil-plant system.However,systematic summary data and discussion of research progress are scant.Based on the results of our previous investigation of selenium-rich navel orange in Gannan,this study systematically summarizes and discusses the oxidation-reduction,absorption,and transport processes of selenium in soil-plant system.Furthermore,this study discussed the effects of soil physical and chemical properties,microorganisms,fertilization,agronomic management,and plant growth stages on the bioavailability and transport of selenium.Future hot spots of selenium research are proposed and discussed.These include:the coupled relationship between soil microbial activity and selenium in biogeochemical cycles;molecular mechanisms related to plant growth,fruit quality,and selenium metabolism;combined isotope tracing technique and thin film diffusion gradient technique in situ to explore the attribution of selenium in biogeochemistry.This study provides a theoretical reference for investigating the regulations of soil selenium bioavailability,effective accumulation of selenium in plant systems,and agronomic bio-enrichment measures for selenium enrichment.

关 键 词：硒生物有效性 土壤-植物系统 硒转运 赣南脐橙 硒形态 

分 类 号：S154.4[农业科学—土壤学]