紫阳县汉王镇土壤、农作物硒含量测定及规律性研究

Determination and law of selenium content in soil and crops of Hanwang town Ziyang county

以陕西省安康市紫阳县汉王镇为研究对象,对辖区部分可耕作土壤及所生长的农作物进行硒含量检测分析。结果表明,采集619个土壤样品均天然含有硒元素,硒含量最高值达到44.504 6 mg/kg,平均值为1.694 3 mg/kg,其中富硒土壤样品共计342个,占总体样品的55.25%;农作物采集样品332个,平均硒含量为0.284 1 mg/kg,达到陕西省规定富硒标准样品有115个,占总数的34.64%。土壤整体平均硒含量高,农作物平均硒含量相应地提高,农作物的硒含量与土壤的硒含量高低呈现出一定的相关性。

Hanwang town of Ziyang county was taken as the research object,and the selenium content of some cultivated soils and growing crops in the area were analyzed.The results showed that 619 soil samples were naturally containing selenium,and the highest selenium content reached 44.5046 mg/kg,with an average of 1.6943 mg/kg.Among them,342 selenium-rich soil samples accounted for 55.25% of the total samples;A total of 332 samples were collected,with an average selenium content of 0.2841 mg/kg,which reached 115 standard samples of selenium enrichment in Shaanxi province,accounting for 34.64% of the total.The average selenium content of the soil was high,and the average selenium content of the growing crops is correspondingly increased.The selenium content of the crops has a certain correlation with the selenium content of the soil.