内蒙古河套农业经济区玉米根系土和植株中有害·有益元素富集特征

Study on Harmful,Beneficial Elements Enrichment Characteristics of Maize Root Soil and Plants in Hetao Agricultural Economic Zone in Inner Mongolia

[目的]评价河套农业经济区玉米有害、有益元素生态效益。[方法]采集内蒙古河套农业经济区玉米根系土籽实和茎叶样品,分析了有毒有害及有益元素含量。[结果]主要有害元素在玉米籽实和茎叶中均占很小比例,大部分为低富集元素;大多数有益元素是低富集,只有N属于强富集元素。研究区种植玉米的根系土中As、Pb、Cd、Hg、Cr、Cu含量均低于国家标准,符合绿色标准土壤,产地环境条件优秀。[结论]研究区内的玉米为绿色食品,适宜人畜食用。

[Objective] The aim was to evaluate ecological benefits of maize harmful and beneficial elements in Hetao agricultural economic zone.[Method] Maize root soil,seed,stem and leaf samples were collected from Hetao agricultural economic zone in Inner Mongolia,poisonous,harmful and beneficial element content was analyzed.[Result] The main harmful elements were accounted for a small proportion in maize seeds and stems,most of them were low enriched elements;most of the beneficial elements were low enrichment,only N belonged to strong enrichment element.The content of As,Pb,Cd,Hg,Cr,Cu and As in maize root soil was lower than the national standard,which was in accordance with the green standard,the environment conditions of producing area were excellent.[Conclusion]Maize in the study area is pollution-free food,which is suitable for the sustenance of human and animal.