Fractionation of Soil Selenium with Relation to Se Availability to PlantsEnglish Full Text
HE ZHEN-Ll, YANG XIAO-E, ZHU ZU-XIANG, XIA WELPING, PAN JIAN-MINGand LIU XIAO-YA2 (Department of Land Use and APPlied Chemistry, Zhejiang Agricultural University, Hanghou 510029China) (The Second Research Institute of Oceanography, Hagzhon 510029 China)
Abstract: Nine soils with distinct properties and Se levels were selected to test a fractionation procedure of soil Se based on sequential extraction. Soil Se was fractionated into readily awilable Se （fraction Ⅰ, extracted by 0.5 M NaHCO3）, slowly available Se （fraCtion Ⅱ, extracted by 0.1 M NaOH-0.1 M Na4P2O7）, amorphous oxide-occluded Se （fraction Ⅲ, extracted by acid ammonium oxalate）, free oxide-occluded Se （fraction Ⅵ,extracted by dithionite-citrate-bicarbonate buffer solution） and residual Se （fraction Ⅴ, determined by HNO3-HClO4 digestion of the final soil residue）. The recovery of soil Se （the sum of all fractions over total soil Se determined independently） by this procedure was from 88.1% to 110.9%, mean 99.2%±6.4% for the test soils. The sum of fractions Ⅰ and Ⅱ, provided a good measure of available Se in soils and the percentage offraction Ⅰ plus Ⅱ over the total soil Se, tentatively defined as Se availability index, could be used to indicate soil Se status and predict Se deficiency.
Keywords：
- Series：
(D) Agriculture
- Subject：
Fundamental Science of Agriculture; Agronomy
- Classification Code：
S153.6
- Mobile Reading
Read on your phone instantly
Step 1Scan QR Codes
"Mobile CNKI-CNKI Express" App
Step 2Open“CNKI Express”
and click the scan icon in the upper left corner of the homepage.
Step 3
Scan QR Codes
Read this article on your phone.
- CAJ Download
- PDF Download
Download the mobile appuse the app to scan this coderead the article.
Tips: Please download CAJViewer to view CAJ format full text.
Download: 62 Pagecount: 8 Size: 300k
Citation Network
Related Literature
- Similar Article
- Reader Recommendation
- Associated Author