安徽省富硒地区农作物硒富集特征及土壤——农作物硒相关性研究

Study on the Enrichment Characteristics of Selenium in Crops and the Correlation between Soil-Crop Selenium in Selenium Rich Areas in Anhui Province

摘要:

本文以安徽省富硒地区为主要研究对象，结合农作物及根系土样品分析结果，对研究区开展农作物硒含量及富集特征研究，初步探讨土壤硒、有效硒与农作物硒的相关性关系，为富硒土壤资源的开发及富硒产业的发展提供科学依据。结果表明：区内土壤硒元素含量范围为0.12～9.45 mg/kg，平均值为0.49 mg/kg，呈较均匀分布,明显富集；农作物硒含量主要受区域地质背景、土壤类型、成土母质及作物类型等因素影响，不同作物之间的硒含量、富集程度及富硒产出率均表现出差异性；土壤硒活性受地域、气候、成土过程等因素的共同影响，是影响农作物硒含量高低的决定性指标，但有效硒含量的高低也对农作物硒含量带来一定的影响。

Abstract:

In this paper, taking selenium rich areas in Anhui province as main study object, combining with analysis results of crops samples and soil from roots samples, geochemical and enrichment characteristics in the study area have been studied. The correlation among total selenium, available selenium and selenium in crops has been discussed. It will provide a scientific basis for the development of selenium rich soil and the development of the selenium industry. It is showed that the content of soil selenium in the area is 0.12~9.45mg/kg, the average content is 0.49mg/kg. It is evenly distributed and enriched obviously. The selenium content of crops is mainly affected by regional geological background, soil type, soil parent material and crop type.There are some differences among the selenium content, enrichment degree and selenium-rich yield rate in different crops.The overall soil selenium activity is influenced by geography, climate and pedogenesis. They are decisive indicators affecting the selenium content of crops. However, the level of available selenium also has a certain influence on the selenium content of crops.