山西农业大学学报（自然科学版）2025，Vol.45Issue(2)：102-112,11.DOI:10.13842/j.cnki.issn1671-8151.202404014
余家湾稻田硒空间分布特征与影响因素
Spatial distribution characteristics and influencing factors of selenium in paddy fields in Yujiawan
摘要
Abstract
[Objective]By exploring the spatial distribution characteristics of selenium(Se)content in the soil-rice system in Yuji-awan 10 000 mu rice base,the morphological composition characteristics of Se in rice and its influencing factors,we hope to provide a research basis for the development of Se-rich rice in Yujiawan area and the efficient utilization of Se elements in soil.[Methods]The surface soil samples of 75 groups of cultivated land and corresponding rice samples were collected from Yuji-awan 10,000 mu rice base,and the contents of 12 mineral elements such as Se,calcium(Ca),iron(Fe)and zinc(Zn)in soil and rice were detected to explore the relationship between Se and other mineral elements in the soil,and the spatial distribution characteristics of Se and its influencing factors were explored by ArcGIS spatial analysis and correlation analysis.[Results]The total Se content in soil ranged from 35～350 μg/kg,and the average value was 200 μg/kg.The soil available Se content ranged from 19～44 μg/kg,and the average value was 28 μg/kg.The total Se content of rice ranged from 13～96 μg/kg,with an average value of 31 μg/kg.The content of selenomethionine(SeMet)in rice is the highest,accounting for 64%～96%of total Se content,with an average of 88%;SeCys2 accounts for 0%～22%of the total Se content,with an average of 5%.There was a significant positive correlation between soil available Se and the contents of potassium(K)and Ca in rice,and the correlation coefficients were 0.77 and 0.72(P<0.01),respectively,which were positively correlated with the boron(B)content of rice,and the correlation coefficient r=0.64(P<0.05),and there was a significant positive correlation between Se content and soil Ca content in rice,with a correlation coefficient r=0.63(P<0.05),and the content of SeMet in rice was positively correlated with soil Ca content,and the correlation coefficient R2=0.377 7(P<0.05).[Conclusion]The study area was generally at the level of sufficient Se,and the proportion of available Se was basically the same as that in Enshi area,and the potential Se enrichment capacity was strong,although indica rice was more easier to enrich Se than japonica rice,but the Se content of rice was generally low.The distribution of Se in soil-rice system was mainly related to human activities and elemen-tal interactions.Ca is used to convert inorganic Se into organic Se for energy,thereby increasing the content of organic Se in rice.关键词
硒/土壤/稻米/空间分布/影响因素/余家湾Key words
Selenium/Soil/Rice/Spatial distribution/Influencing factors/Yujiawan分类
农业科技引用本文复制引用
吴格格,尹雪斌,王莉莉,王晓虎,张泽洲,陈清清,宋佳平,王张民,孙辰璐,牛珊珊..余家湾稻田硒空间分布特征与影响因素[J].山西农业大学学报（自然科学版）,2025,45(2):102-112,11.基金项目
2020年南京市浦口区万亩核心生产示范基地功能农业目的的资源调查项目(FAST-HBT-202002) （FAST-HBT-202002）
2020年宁夏中卫市富硒功能农产品技术标准制定及硒资源和质量评价服务项目(FAST-HBT-202005) （FAST-HBT-202005）
食品原料硒生物营养定量强化与硒蛋白制备技术开发(2022JBGS-FXSP01-02) （2022JBGS-FXSP01-02）
富硒产品硒形态检测技术研究及功能成分检测平台建设(2020QFY09-09) （2020QFY09-09）
