赣南地区设施菜地土壤全硒含量分布特征  

Distribution characteristics of the total selenium content in greenhouse vegetable soil in southern Jiangxi Province of China

作　　者：成臣 易艳红 廖雅汶 王雅青 王志雯 喻刚 卢占军[1] 朱博 姚锋先[1] 杨红兰 Cheng Chen;Yi Yanhong;Liao Yawen;Wang Yaqing;Wang Zhiwen;Yu Gang;Lu Zhanjun;Zhu Bo;Yao Fengxian;Yang Honglan(Life Sciences College,Gannan Normal University/Ganzhou Key Laboratory of Greenhouse Vegetable,Ganzhou 341000,China;Yichun Meteorological Bureau of Jiangxi Province,Yichun 33600,China;Bureau of Agriculture and Rural Affairs of Dingnan County of Jiangxi Province,Ganzhou 341900,China)

机构地区：[1]赣南师范大学生命科学学院/赣州市设施蔬菜重点实验室,赣州341000 [2]江西省宜春市气象局,宜春336000 [3]江西省定南县农业农村局,赣州341900

出　　处：《农业工程学报》2022年第9期333-338,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：江西省教育厅科学技术研究项目(GJJ211430,GJJ201448);江西省重点研发计划项目(20203BBFL63065,20171ACF60007);江西省科技平台建设(2017PTGCD0052)。

摘　　要：为探究江西省赣州设施菜地土壤全硒(Se)的含量及其分布特征,于2021年对赣南地区设施蔬菜大棚采集0~20 cm耕层土壤样235件,测定了土壤采样点的经纬度、海拔及土壤中全硒含量和理化性质。结果表明,赣南地区设施菜地土壤全硒质量分数平均为0.31 mg/kg,变化范围为0.03~1.25 mg/kg,全硒含量分布频率符合正态分布。研究区域设施菜地富硒土壤资源较为丰富,85.1%的样点数土壤全硒含量处于足硒及以上水平(>0.175 mg/kg),其中有22.1%的样点数土壤属于富硒水平标准(>0.400~3.000 mg/kg),而富硒土壤主要集中在赣南地区的正西部及东北部等部分区域;7.2%和7.7%的样点数土壤全硒质量分数分别达硒不足(>0.125~0.175 mg/kg)和潜在硒不足水平(≤0.125 mg/kg),二者主要集中在赣南地区西南角部分区域,不存在硒中毒区域。海拔每增加1 m,设施土壤全硒质量分数降低5.35×10^(-4)mg/kg;纬度每增加1°和pH值每增加一个单位,土壤全硒质量分数分别增加0.090和0.049mg/kg。综上,赣南地区设施菜地土壤硒资源具有较大利用潜力,并可依据研究区域全硒含量分布特征开展具有针对性的设施富硒蔬菜发展策略。Selenium(Se)is one of the essential trace elements in the process of human nutrient metabolism.The Se deficiency can cause various health risks or disorders of the human body.Fortunately,there are abundant Se-rich soil resources in Ganzhou City of Jiangxi Province,China.It is a high demand to make the Se-rich agricultural products more popular in the markets.A production system of greenhouse vegetables has been one of the most intensive agro-ecosystems in recent years.The facility vegetable industry can be expected to serve as the second-largest pillar industry after Gannan navel oranges,as the facility steel frame greenhouses increased rapidly.However,the Se enrichment in the facility soil is still unclear in southern Jiangxi.It is very necessary to fully utilize the Se soil resources of facilities for the decision-making on the land use management.This study aims to explore the total Se content of greenhouse vegetable soil and the distribution characteristics in Ganzhou City,Jiangxi Province,China.235 soil samples were collected from the 0-20 cm cultivated layer in the greenhouse vegetable bases in 2021.A geographic information system(GIS)was used to measure the latitude,longitude,and altitude of the soil sampling points.The total Se content was also measured to determine the physicochemical properties in the soil samples.The results showed that the average content of total Se was 0.31 mg/kg in the greenhouse vegetable field in the study area,where the variation range was 0.03 to 1.25 mg/kg.The distribution frequency of soil Se content was followed by the normal distribution.There were the relatively abundant Se-rich soil resources of the greenhouse vegetable plots.Specifically,the total Se content in 85.1%of the soil samples was at or above the level of sufficient Se(>0.175 mg/kg),of which 22.1%of the sample soils belonged to the Se-rich level standard(>0.400-3.000 mg/kg).The Se-enriched soil plots were mainly concentrated in the western and northeastern parts of southern Jiangxi.Only 7.2%and 7.7%of the total

关 键 词：土壤 硒 设施菜地 江西赣州 分布特征 红壤区 

分 类 号：S159.2[农业科学—土壤学]