中国稻米

中国稻米 ›› 2014, Vol. 20 ›› Issue (1): 76-77.DOI: 10.3969/j.issn.1006-8082.2014.01.018

• 品种与技术 • 上一篇    下一篇

硒肥施用对稻米中镉等重金属含量的影响

  1. 湖南省贺家山原种场，湖南 常德 415123
  • 出版日期:2014-01-20 发布日期:2014-01-20

Effects of Selenium Fertilizer on the Content of Heavy Metal Cadmium in Rice

  • Online:2014-01-20 Published:2014-01-20

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摘要： 以优质常规水稻品种黄华占、星2号和湘阴县镉等重金属重度污染区土壤为试验材料，通过叶面施硒盆栽试验，研究硒对稻米中镉等重属含量的影响。结果表明，黄华占以每667 m2施16 g硒的降镉效果最好，随着硒用量的加大，降镉效果下降，呈开口向上的二次函数曲线变化趋势；星2号随着硒用量的加大，降镉效果呈递减变化趋势。两个水稻品种施硒都能达到降镉的目的，但很难将稻米中镉控制在限量指标范围内，降镉效果一般。

关键词: 硒肥, 叶面喷施, 重金属, 水稻

Abstract: The paper analyzed the effects of spraying selenium fertilizer on the content of cadmium and other heavy metals in rice by pot experiments. The experiments were conducted in the soil that had been polluted by cadmium and other heavy metals in Xiangyin County, with conventional rice varieties Huanghuazhan and Star 2. The results showed that the best treatment of reducing cadmium was 16 g/667 m2 selenium in Huanghuazhan, and 8 g/667 m2 in Xing 2. With the amount of selenium increasing, the effect of reducing cadmium became worse in Xing 2. Application of selenium fertilizer can reduce cadmium in these two rice varieties, but it is difficult to control the amount of cadmium in a permitted range, and the effect is limited.

Key words: selenium fertilizer, foliage spray, heavy metal；rice

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