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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (30): 10-15.doi: 10.11924/j.issn.1000-6850.casb15050127

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Studies on Se-enriched Rice Production and the Effect of Se-enrichment

Yue Shizhong, Li Shengnan, Qiao Yuhui, Li Huafen, Wang Ruiping   

  1. (College of Resources and Environment Sciences, China Agricultural University, Beijing 100193)
  • Received:2015-05-22 Revised:2015-09-16 Accepted:2015-07-23 Online:2015-10-29 Published:2015-10-29

Abstract: More than 20-year literatures about Se-enriched rice were reviewed to analyze the production and Se content of Se-enriched rice. The results showed that the fertilizer was mainly applied by foliage spray, which accounted for 92.86% of all samples; the main kinds of selenium fertilizers included organic selenium fertilizer (67.35%) and inorganic selenium fertilizer (32.65%); the researches were concentrated in rice heading stage (36.54%) and full panicle stage (21.15%); a reduction of yield was caused when the application amount was over 20 g/hm2; foliage spray of organic Se-enriched fertilizer could increase the yield with an average of 5.55% (-3.09%—18.77%), and selenium content of rice was 0.24 mg/kg on average (0.04—0.78 mg/kg). The application of inorganic sodium selenite could increase the yield by 7.36% on average (-7.20%—20.0%), the selenium content was 4.04 mg/kg on average (0.09—53.39 mg/kg). The selenium content of 60% rice samples was beyond the standard of selenium-rich rice (DB34/T 847—2008) under the application of inorganic selenium fertilizer. Overall, only 38.96% of rice samples could meet the standard of DB34/T 847—2008. Therefore, organic selenium fertilizer was recommended in the production of Se-enriched rice and inorganic sodium selenite selenium fertilizer should be less applied.

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