| Correlation between calcareous soil selenium content and wheat grain selenium content |
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| DOI：10.7606/j.issn.1000-7601.2016.05.23 |
| Key Words: wheat grain calcareous soil total Se available Se activity index soil structure |
| Author Name | Affiliation | | ZHANG Dong | Department of Resources and Environmental Sciences, College of Agronomy, Shihezi University, Shihezi, Xinjiang 832003, China | | ZHANG Ni | Department of Resources and Environmental Sciences, College of Agronomy, Shihezi University, Shihezi, Xinjiang 832003, China | | HOU Zheng-an | Department of Resources and Environmental Sciences, College of Agronomy, Shihezi University, Shihezi, Xinjiang 832003, China | | YE Jun | Department of Resources and Environmental Sciences, College of Agronomy, Shihezi University, Shihezi, Xinjiang 832003, China |
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| Abstract: |
| As a traceable element, selenium is of great importance on human health and its contents in environment directly affects the health and safety of human beings, animals and plants. Concentration and availability of selenium in wheat soils in Xinjiang province were investigated and the governing factors were analyzed by collecting 39 surface soil samples from different regions in Xinjiang. The results showed that the total selenium content ranges from 0.144 mg·kg-1 to 1.153 mg·kg-1. 10% of the soils contain little selenium (0.125～0.175 mg·kg-1), 49% contain full selenium (0.175～0.450 mg·kg-1), and 41% are selenium-rich (0.450～2.000 mg·kg-1). The average activation rate of soil selenium is 25.11%. The wheat grain selenium content ranges from 0.004 mg·kg-1 to 0.055 mg·kg-1. While 92% of the wheat grains selenium content is lower than the national cereal food selenium-rich standard, indicating that there was no correlation between total selenium content in soil and wheat grain selenium content. But soil availability selenium and wheat grain selenium content have significant correlation. Soil availability selenium and soil pH have significant correlation. Therefore, improvement of the availability of selenium in soil can help to produce selenium-rich wheat. Through the control of soil conditions in the actual production by improving the available soil selenium, the selenium content in wheat grain can also be improved. Soil total selenium content becomes increased with the increase of heavy degree in soil texture. |
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