姬华伟,任蕊,陈继平,张继军,李傲瑞,冯伟华.关中不同类型土壤硒含量特征及其对玉米籽粒硒含量的影响[J].西北地质,2021,54(4):239-249 JI Huawei,REN Rui,CHEN Jiping,ZHANG Jijun,LI Aorui,FENG Weihua.Characteristics of Selenium Content in Different Soil Types in Guanzhong and Its Influence on Selenium Content of Corn Grain[J].Northwestern Geology,2021,54(4):239-249
关中不同类型土壤硒含量特征及其对玉米籽粒硒含量的影响
Characteristics of Selenium Content in Different Soil Types in Guanzhong and Its Influence on Selenium Content of Corn Grain
投稿时间:2020-12-25  修订日期:2021-06-03
DOI:10.19751/j.cnki.61-1149/p.2021.04.019
中文关键词:  关中地区;土壤类型;硒含量;硒形态;玉米籽粒
英文关键词:Guanzhong area;soil types;selenium content;selenium speciation;corn grain
基金项目:陕西省公益性地质项目“陕西省关中地区碱性富硒土地开发利用综合研究”(20180307)。
作者单位
姬华伟 陕西省地质调查院, 陕西省水工环地质调查中心, 陕西 西安 710068 
任蕊 陕西省地质调查院, 陕西省水工环地质调查中心, 陕西 西安 710068 
陈继平 陕西省地质调查院, 陕西省水工环地质调查中心, 陕西 西安 710068 
张继军 陕西省地质调查院, 陕西省水工环地质调查中心, 陕西 西安 710068 
李傲瑞 陕西省地质调查院, 陕西省水工环地质调查中心, 陕西 西安 710068 
冯伟华 陕西省地质调查院, 陕西省水工环地质调查中心, 陕西 西安 710068 
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中文摘要:
      于陕西省关中地区选取潮土、风沙土、褐土、黑垆土、红土、新积土及其上生长的玉米为研究对象,分别采集74个玉米和根系土样品,分析了土壤硒含量、形态特征及影响因素,以及土壤硒含量变异对玉米籽粒硒含量的影响。结果发现:①褐土和新积土全硒含量、各形态硒含量均明显高于其他土壤类型,且为富硒土壤。②褐土和新积土中易被生物利用的易利用态硒含量明显高于其他几种土壤类型。③褐土和新积土生长的玉米籽粒硒含量达到富硒标准,且明显高于其他4种类型土壤生长的玉米籽粒硒含量;当土壤硒含量累积增加到一定水平时,玉米籽粒硒含量随之增加。结果说明研究区内硒含量较高的褐土和新积土适宜于生产富硒玉米。本研究有助于加深认识关中地区土壤理化性质及其与硒有效性关系,并为调节土壤硒水平、改良植物硒营养状况、富硒资源开发利用及种植结构调整提供理论依据。
英文摘要:
      This paper selects fluvo-aquic soil, aeolian sandy soil, cinnamon soil, black loessial soil, red soil, alluvial soil in Guanzhong of Shaanxi Province and corn growing on them as the research objects. 74 corn samples and 74 root soil samples were collected, and soil Se content, Se speciation and its influencing factors, the effect of soil Se content variation on corn grain Se content were analyzed. The results showed that contents of total Se and various Se fractions of both cinnamon soil and alluvial soil were significantly higher than those of other four soil types, and cinnamon soil and alluvial soil were Se rich soils. The bio-available Se content of cinnamon soil and alluvial soil was significantly higher than that of other four soil types. The Se content of corn grain in cinnamon soil and alluvial soil met the standard of selenium enrichment, and was significantly higher than that of corn grain in the other four soil types. Furthermore, the Se content in corn grains increased when soil Se content increased to a certain level. These results suggested that cinnamon soil and alluvial soil with higher selenium content were suitable for selenium-rich corn. This study is of help to understand the physical and chemical properties of soil in Guanzhong area and the relationship with Se availability. It provides theoretical basis for the adjustment of soil selenium level, the improvement in plant selenium nutrition status, the development and utilization of selenium-rich resources and the adjustment of planting structure.
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