The Cultivation and SeleniumEnrichment of SeleniumEnriched Earthworm

以赤子爱胜蚓为生物载体,在蚯蚓饲料中添加亚硒酸钠进行富硒蚯蚓培养试验,利用蚯蚓的生物富集作用将无机硒转化为有机硒。以存活率、硒含量为优化指标,研究5种硒浓度(20、40、60、80、100 mg·kg-1)和4种培养时间(第15、30、45、60 d)对蚯蚓生长和硒含量的影响规律,筛选存活率高、硒含量高、培养时间短的富硒蚯蚓培养方法。试验结果表明:蚯蚓饲料中亚硒酸钠含量越高、培养时间越长,蚯蚓的存活率越低,硒含量越高,且当硒添加量为80 mg·kg-1,培养时间为45 d时,培养条件最优,此时蚯蚓体内硒含量可达33.25 mg·kg-1。 As a bio-carrier, Eisenia f...

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Bibliographic Details
Published in:Journal of agricultural resources and environment 2014-01, Vol.31 (6), p.570
Main Authors: Xiao-Fei, Sun, Yu-Hui, Qiao, Zhen-Jun, Sun, Wang, Chong, Li, Hua-Fen, Shi-Zhong, Yue
Format: Article
Language:Chinese
Subjects:
Analytical chemistry
Breeding
Cattle manure
Cultivation
Dung
Selenium
Sodium
Sodium selenite
Survival
Worms
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Summary:以赤子爱胜蚓为生物载体,在蚯蚓饲料中添加亚硒酸钠进行富硒蚯蚓培养试验,利用蚯蚓的生物富集作用将无机硒转化为有机硒。以存活率、硒含量为优化指标,研究5种硒浓度(20、40、60、80、100 mg·kg-1)和4种培养时间(第15、30、45、60 d)对蚯蚓生长和硒含量的影响规律,筛选存活率高、硒含量高、培养时间短的富硒蚯蚓培养方法。试验结果表明:蚯蚓饲料中亚硒酸钠含量越高、培养时间越长,蚯蚓的存活率越低,硒含量越高,且当硒添加量为80 mg·kg-1,培养时间为45 d时,培养条件最优,此时蚯蚓体内硒含量可达33.25 mg·kg-1。 As a bio-carrier, Eisenia fetida was fed with cow dung that added with sodium selenite in order to transfer inorganic selenium(Se) into organic selenium. Targeting on survival rate and selenium content, the effects of five Se concentrations(0, 20, 40, 60, 80, 100 mg·kg-1) and four cultivation periods(15, 30, 45, 60 d)on earthworm growth and Se contents were investigated. The cultivation method with high survival rate, high Se content of earthworm and short breeding time would be screened out. The experimental results showed that the earthworm survival rate decreased and the Se content in earthworm increased with the increase of Se application and the extension of breeding time. The most optimummethod was screened out when the Se concentratio
ISSN:2095-6819
2095-6819
DOI:10.13254/j.jare.2014.0247