湖北省不同区域土壤与农作物硒相关性研究

[目的]探究不同区域3种农作物水稻、玉米和小麦籽实硒含量与其根系土硒含量的相关性。[方法]通过收集湖北省"金土地"工程土壤及农作物数据,根据区域地貌特征划分为鄂西山区、鄂北岗地和沿江平原,研究不同区域3种农作物硒含量与其土壤硒含量的相关性。[结果]不同区域的土壤硒背景值为:鄂西山区0.88 mg/kg,鄂北岗地0.33 mg/kg,沿江平原0.34 mg/kg。鄂西山区农作物的籽实硒含量与其根系土硒含量相关性最好,鄂北岗地次之,沿江平原相关性最弱甚至不相关。[结论]鄂西地区富硒土壤最多,最易生产出富硒农作物,沿江平原富硒土壤广泛分布,在适宜条件下也易生产出富硒农作物。

Correlation Study between Crop Selenium and Its Soil Selenium in Different Regions of Hubei Province

[Objective]To explore the correlation between crop(rice,maize and wheat) selenium content and its soil selenium content in different regions.[Method] By collecting soil and crop data of the "Golden Land" project in Hubei Province,according to the regional geomorphic characteristics,the research area was divided into western Hubei mountainous area,northern Hubei downland and riparian plain,and then correlation between three different crops selenium content and its soil selenium content was researched in different regions.[Result]The soil selenium content background in different regions was 0.88 mg/kg in western Hubei mountainous area,0.33 mg/kg in northern Hubei downland and 0.34 mg/kg in riparian plain.The correlation of crop selenium content and its soil selenium content in western Hubei mountainous area was the best,the next was northern Hubei downland,the riparian plain was the worse.[Conclusion] In western Hubei mountainous area,there are most rich selenium soil,and selenium-rich crops are the easiest to produce.However,in riparian plain,rich selenium soil is wide distribution,and selenium-rich crops are easily produced under suitable conditions.