硒浸种与叶面喷硒对水稻吸收转运镉的影响  

Effects of Uptake and Transport of Cadmium in Rice(Oryza sativa L.)by Soaking Seeds and Foliar Spraying with Selenium Fertilizers

作　　者：何依珊 黄佳 韦丽媛 黎晓 李怡静 徐子琴 陈喆 HE Yishan;HUANG Jia;WEI Liyuan;LI Xiao;LI Yijing;XU Ziqin;CHEN Zhe(Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin(Guangxi Normal University),Guilin Guangxi 541006,China;Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area,Ministry of Natural Resources,Nanning Guangxi 530028,China;Natural Resources Ecological Restoration Center of Guangxi Zhuang Autonomous Region,Nanning Guangxi 530028,China)

机构地区：[1]广西漓江流域景观资源保育与可持续利用重点实验室(广西师范大学),广西桂林541006 [2]自然资源部南方石山地区矿山地质环境修复工程技术创新中心,广西南宁530028 [3]广西壮族自治区自然资源生态修复中心,广西南宁530028

出　　处：《广西师范大学学报(自然科学版)》2025年第1期48-57,共10页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金(41807136);自然资源部南方石山地区矿山地质环境修复工程技术创新中心开放课题(NFSS2023020);广西重点研发计划项目(桂科AB21220057)。

摘　　要：本研究以水稻(T优109、深两优5814)为实验对象,通过外源施硒(硒浸种、叶面喷硒和硒浸种联合叶面喷硒处理),探讨硒对水稻吸收转运镉的影响。结果表明,硒浸种联合叶面喷硒处理降低水稻植株镉含量的效果最佳,硒浸种联合叶面喷硒处理显著降低T优109水稻孕穗期和乳熟期根、茎、叶和穗镉含量(P<0.05),与对照相比分别降低26.64%、25.81%、6.25%、20.00%和22.05%、17.23%、27.42%、18.95%;硒浸种联合叶面喷硒处理可显著降低深两优5814水稻乳熟期根、茎、叶和穗部的镉含量,与对照组相比分别降低9.30%、29.41%、35.39%和19.83%;硒浸种联合叶面喷硒均可显著降低2种水稻根、茎、叶、穗的镉富集系数(P<0.05)。外源施硒可降低水稻籽粒镉含量、增加水稻穗重,其中均以硒浸种联合叶面喷硒处理效果最佳。同种硒肥处理下,T优109水稻糙米镉含量降低效果和千粒重增产效果均优于深两优5814水稻。In this study,the effect of selenium on the uptake and transport of cadmium in rice were evaluated by exogenous application of selenium(selenium-soaked seeds,foliar selenium spraying and selenium-soaked seeds combined with foliar selenium spraying treatments)using rice(T-Young 109 and Shenliangyou 5814)as experimental subjects.The results showed that selenium-soaked seeds combined with foliar spraying of selenium treatment had the best effect on reducing cadmium content in rice plants,and the selenium-soaked seeds combined with foliar spraying of selenium treatment significantly reduced cadmium content in roots,stems,leaves and spikes of T-Young 109 rice at the spike stage and milky ripening stage(P<0.05),which were reduced by 26.64%,25.81%,6.25%,and 20.00%,respectively,and 22.05%,17.23%,27.42%and 18.95%respectively,when compared with the control group.Selenium-impregnated seeds combined with foliar spraying of selenium treatment significantly reduced cadmium content in roots,stems,leaves and spikes of Shenliangyou 5814 rice by 9.30%,29.41%,35.39%and 19.83%,respectively,as compared with the control,and selenium-impregnated seeds combined with foliar spraying of selenium both significantly reduced the cadmium enrichment coefficients of the roots,stems,leaves and spikes of the two types of rice(P<0.05).Exogenous selenium application could reduce the cadmium content of rice grains and increase the weight of rice spikes,among which the selenium-soaked seeds combined with foliar spraying of selenium had the best effect.Under the same selenium fertiliser treatment,the effect of reducing the cadmium content in brown rice and increasing the yield of kernel weight of T-Young 109 rice was better than that of Shenliangyou 5814 rice.

关 键 词：水稻 硒 浸种 叶面喷施 镉 

分 类 号：S511[农业科学—作物学]