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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (3): 124-127.doi: 10.11924/j.issn.1000-6850.casb15070091

所属专题： 水稻

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

稻米重金属镉含量预警方法研究

杨定清,严俊,雷绍荣,陈能场,周娅,谢永红,罗丽卉,王棚   

  1. 四川省农业科学院分析测试中心,成都大学,四川省农业科学院分析测试中心,广东省生态环境与土壤研究所,四川省农业科学院分析测试中心,四川省农业科学院分析测试中心,四川省农业科学院分析测试中心,四川省农业科学院分析测试中心
  • 收稿日期:2015-07-17 修回日期:2016-01-05 接受日期:2015-09-07 出版日期:2016-01-29 发布日期:2016-01-29
  • 通讯作者: 陈能场
  • 基金资助:
    公益性行业（农业）科研专项“农产品产供安全过程管控技术研究与示范”(201303088)；国家农产品质量安全风险评估重大专项“2014 年食用农产品环境因子风险评估”(GJFP2014012)。

Study on Early Warning Method of Cadmium Content in Rice

  • Received:2015-07-17 Revised:2016-01-05 Accepted:2015-09-07 Online:2016-01-29 Published:2016-01-29

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摘要： 中国是水稻生产量最大的国家，近年来稻米中的重金属特别是镉成为公众关注的对象，也因此控制稻米中的镉超标是政府在农业生产方面最重要的工作之一。笔者研究了3 种大田土壤条件下种植的4 个水稻品种在灌浆结实期间稻米重金属镉的积累规律。结果表明：开花后16 天（第1 次）采样与开花后36 天（第6 次）采样结果存在显著差异，开花后20 天（第2 次）采样和其它5 次（分别为开花后16、24、28、32、36 天）采样结果无显著差异。在开花后20 天进行稻米镉含量检测结果，与谷粒成熟期的结果一致，可将采样时间提前20天，对稻米安全管理起到预警作用。

关键词: 青稞, 青稞, 发芽, 浸泡, β-葡聚糖, 苯酚硫酸法

Abstract: China is the top rice producer in the world, heavy metals especially cadmium in rice (Oryza.sativa L.) has become a hot-spot topic in recent years, thus it is one of the most important work for the government to avoid“cadmium polluted rice”in agricultural production. The accumulation of cadmium in four rice varieties during filling to ripening stages under three field conditions was studied. The results showed that cadmium in rice grains had significant differences between the 16th days (the 1st sampling time) and the 36th days (the 6th sampling time) after flowering, but there was no significant difference between the 20th day (the 2nd sampling time) and the other five sampling times (i.e the 16th, 24th, 28th, 32nd, 36th days after flowering). The results showed that cadmium concentration determined on the 20th days after flowering was similar to those determined afterwards. This early determination could be used to predict cadmium content, and hence used in early warning for safe management.