农作物根系土对农产品安全的影响分析——以保定东部地区为例

Effect of crop root soil on agricultural product safety:take the eastern part of Baoding Hebei province as an example

农作物中重金属含量过高势必影响人类健康与生态安全,通过对农作物与其根系土调查,对污染元素进行生态效应评价具有重要的实际意义。本文以土壤重金属超标地区--保定东部地区的大宗农作物小麦、玉米及其根系土为研究对象,开展了元素含量测试和统计分析。结果表明:小麦、玉米样品中有富硒样品;部分小麦样品存在重金属元素超标现象,玉米样品全部不超标。农作物可食部分对元素的吸收能力为小麦>玉米。通过调查农作物对不同元素的吸收能力,对土壤重金属超标地区的农产品种植具有指导作用,有利于研究区土地资源的安全利用。

The high content of heavy metals in crops is bound to affect human health and ecological safety.It is great practical significance to evaluate the ecological effects of polluted elements by investigating crops and their root soils.In this paper,the contents of elements in wheat,corn and their root soils in the eastern part of Baoding, an area where heavy metals exceed the standard,were tested and analyzed.The results showed that there were selenium-rich samples in wheat and corn samples,and some wheat samples were over-standard in heavy metal elements,while all corn samples did not exceed the standard.The absorptive capacity of the edible part of crops was wheat > corn.Investigating the absorptive capacity of crops to different elements can guide the cultivation of agricultural products in areas with excessive heavy metals in soil,and conducive to the safe use of land resources in the study area.