地质与资源2025，Vol.34Issue(6)：739-745,7.DOI:10.13686/j.cnki.dzyzy.2025.06.008
三江平原宝清县土壤-农作物系统硒元素分布及富集特征
Distribution and enrichment characteristics of selenium in the soil-crop system of Baoqing County,Sanjiang Plain
摘要
Abstract
Based on an investigation of the ground substrate layer of black soil region in Baoqing County,Sanjiang Plain,this study collected a total of 244 topsoil samples(0-20 cm)and 50 paired sets of crop grains and corresponding root-zone soils(including 7 sets of rice grains,36 sets of maize grains,and 7 sets of soybean grains),and systematically analyzed the selenium(Se)content in different soil types and land use types,as well as in crop grains and the corresponding bioconcentration factors(BCF).The results indicate that the topsoil Se content in Baoqing County ranges from 0.09×10-6 to 0.411×10-6,with a background value of 0.239×10-6.Soils with adequate Se account for 88.91％of the total area,while soils with potential selenium deficiency and Se-deficient soils together occupy 11.05％.Se-rich soils are limited to only 3.64 km2,and no Se-toxic soils were identified.Among soil types,black soil showed the highest Se content,followed by meadow soil,albic soil,paddy soil,swamp soil,and dark brown soil,in descending order.In terms of land use types,water bodies exhibited the highest Se levels,succeeded by construction land,dry land,paddy field,and forest land.The average Se content was 0.054×10-6 in rice grains,0.027×10-6 in maize grains,and 0.049×10-6 in soybean grains.The mean Se BCF values were 0.081％for maize,0.177％for rice,and 0.137％for soybean.Se enrichment was moderate in rice and soybean grains,but weak in maize grains.关键词
土壤硒含量/土壤-农作物系统/作物籽实/生物富集系数/三江平原/黑龙江省Key words
soil selenium content/soil-crop system/crop grain/bioconcentration factor(BCF)/Sanjiang Plain/Heilongjiang Province分类
天文与地球科学引用本文复制引用
赵建,张洪文,孔繁鹏,刘洪博,何金宝,邵吉亮,徐艳红..三江平原宝清县土壤-农作物系统硒元素分布及富集特征[J].地质与资源,2025,34(6):739-745,7.基金项目
中国地质调查局自然资源综合调查指挥中心项目"三江平原宝清地区黑土地地表基质调查"(DD20211588). （DD20211588）
