江西农业大学学报2026，Vol.48Issue(3)：646-657,12.DOI:10.3724/aauj.2026053
缓控释硒肥对水稻农艺性状和硒积累的研究
Study on the effects of controlled-release selenium fertilizer on rice agronomic traits and selenium accumulation
摘要
Abstract
[Objective]To investigate the effects of application timing and dosage of controlled-release selenium fertilizer on rice growth,selenium accumulation,and rice grain quality,thereby providing technical support for the green and efficient production of selenium-enriched rice.[Method]Field experiments were conducted using the conventional rice cultivar'Huanghuazhan'as the experimental material.Two selenium application periods(Basal stage and tillering stage)and three selenium application rates(600,900,and 1 200 g/hm2)were set,with the application of compound fertilizer alone serving as the control(CK).[Result]Controlled-release selenium fertilizer significantly promoted rice plant height(increased by 6.1%-16.9%)and dry matter accumulation(increased by 18.6%-37.2%),with the tillering stage application showing markedly superior effects compared to the basal stage.All selenium treatments increased yield(by 6.1%-23.2%),with the most significant increase(23.2%)observed when 900 g/hm2 selenium fertilizer was applied during the tillering stage(T900).This was primarily attributed to synergistic increases in panicle number per unit area(up 10.3%),grain setting rate(up 7.8%),and 1000-grain weight(up 4.2%).Regarding selenium accumulation,selenium application during the tillering stage facilitated more efficient transport of selenium to grains.The T900 treatment significantly elevated grain selenium content by 967.5%,increased brown rice selenium content by 54.0-fold,and boosted organic selenium content by 46.2-fold.Concurrently,selenium application during tillering markedly improved rice mineral nutrition,with T900 treatment increasing potassium,magnesium,calcium,and manganese levels in brown rice by 20.7%,25.9%,25.4%,and 101.6%,respectively.It also significantly reduced accumulation of harmful heavy metals cadmium and chromium by 85.1%and 55.6%,respectively.Regarding fertilizer utilization efficiency,the T900 treatment exhibited the highest agronomic utilization rate(1.75 kg/g),with grain selenium utilization reaching 0.67%.[Conclusion]900 g/hm2 controlled-release selenium fertilizer during the tillering stage is thought to be the best fertilization mode,achieving both high rice yields and significantly enhancing selenium nutritional quality and mineral element safety in rice grains.关键词
缓控释硒肥/水稻/硒含量/稻米营养/硒肥利用率Key words
controlled-release selenium fertilizer/rice/selenium content/nutritional quality of rice/selenium fertilizer utilization rate分类
农业科技引用本文复制引用
张康康,魏益华,黄正花,昌晓宇,陈徐俊,靳丹丹,张标金..缓控释硒肥对水稻农艺性状和硒积累的研究[J].江西农业大学学报,2026,48(3):646-657,12.基金项目
江西省重点研发计划项目(20232BBF60019)、赣鄱俊才支持计划-主要学科学术和技术带头人培养项目(20232BCJ22059)、国家自然科学基金资助项目(32260067)和江西现代农业科研协同创新专项项目(JXXTKYTJTS202505) Project supported by Jiangxi Provincial Key Research and Development Program Project(20232BBF60019),Gan-po Outstanding Talent Support Program-Key Discipline Academic and Technical Leader Cultivation Project(20232BCJ22059),National Natural Science Foundation of China Grant Project(32260067)and Jiangxi Modern Agriculture Scientific Research Collaborative Innovation Special Project(JXXTKYTJTS202505) 江西省农业科学院基础研究与人才培养专项(JXSNKYJCRC202523)同时对本研究给予了资助,谨致谢意! （20232BBF60019）
