| 施硒对水稻外观品质及籽粒硒、镉和砷含量的影响 |
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| 引用本文： | 徐琴,王孟,谢义梅,陈甜甜,周灵,谭亚华,石垒,邢丹英.施硒对水稻外观品质及籽粒硒、镉和砷含量的影响[J].中国农业科技导报,2019,21(5):135-140. |
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| 作者姓名： | 徐琴 王孟 谢义梅 陈甜甜 周灵 谭亚华 石垒 邢丹英 |
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| 作者单位： | 1.长江大学农学院, 主要粮食作物产业化湖北省协同创新中心, 湖北 荆州 434025; 2.中国农业科学院作物科学研究所, 北京 100081; 3.长江大学作物富硒应用技术研究所, 湖北 荆州 434025; 4.国家富硒产品质量监督检测中心（湖北）, 湖北 恩施445000; 5.恩施市土壤肥料工作站, 湖北 恩施 445000 |
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| 基金项目： | 国家公益性行业（农业）科研专项（201303106）；湖北省富硒产业研究院项目（XKJ-201501-15）；国家重点研发计划粮食丰产增效科技创新专项（2017YFD0301403-06）资助。 |
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| 摘 要： | 喷施叶面硒肥是提高水稻籽粒硒含量的有效措施。通过对杂交水稻隆两优华占在孕穗期施用不同浓度的硒叶面肥,研究了施硒对水稻外观品质及籽粒硒、镉和砷含量的影响。结果表明:①施硒能显著提高水稻的整精米率,降低垩白度,当施用量为23 g/hm~2复合硒叶面肥+20 g/hm~2亚硒酸钠时,整精米率达到最高值65.67%,垩白度达到最低值0.65%;②增施硒肥能增加水稻精米和糙米的硒含量,当施用量为23 g/hm~2硒叶面肥+30 g/hm~2亚硒酸钠时,水稻精米和糙米硒含量分别达到最大值为0.784 3 mg/kg和0.816 7 mg/kg,糙米积累硒的能力高于精米;③增施硒肥对水稻精米和糙米中镉和砷含量均没有显著影响,表明籽粒对硒与镉和砷的吸收没有协同作用。同一处理下糙米镉含量均高于精米镉含量,但差异不显著,糙米对重金属砷的累积效果均显著高于精米。
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| 关 键 词： | 水稻 叶面肥 施硒 镉含量 砷含量 |
Effect of Selenium Application on Appearance Quality,Grain Selenium,Cadmium and Arsenic Content in Rice |
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| XU Qin,§,WANG Meng,§,XIE Yimei,CHEN Tiantian,ZHOU Ling,TAN Yahua,SHI Lei,XING Danying.Effect of Selenium Application on Appearance Quality,Grain Selenium,Cadmium and Arsenic Content in Rice[J].Journal of Agricultural Science and Technology,2019,21(5):135-140. |
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| Authors: | XU Qin § WANG Meng § XIE Yimei CHEN Tiantian ZHOU Ling TAN Yahua SHI Lei XING Danying |
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| Institution: | 1.Hubei Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Hubei Jingzhou 434025; 2.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081; 3.Crop Se-rich Application Technology Institute, Yangtze University, Hubei Jingzhou 434025; 4.National Quality Supervision and Testing Center for Selenium Products (Hubei), Hubei Enshi 445000; 5.Soil and Fertilizer Workstation of Enshi City, Hubei Enshi 445000, China |
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| Abstract: | Addressing selenium foliage fertilizer is considered as an effective measure to improve selenium content in rice grains. This paper analyzed the effects of selenium application on the appearance quality of rice and the content of selenium, cadmium and arsenic in grains by addressing different dosages of selenium foliage fertilizer on hybrid rice Longliangyouhuazhan at booting stage. The results indicated that: ①Selenium application could significantly increase the percentage of head rice but reduce chalkiness. When 23 g/hm2 selenium foliage fertilizer + 20 g/hm2 Na2SeO3 were applied, the percentage of head rice could get the maximum value of 65.67%, while the chalkiness reached the minimum value of 0.65%. ②The selenium contents of milled rice and brown rice could be increased by addressing selenium foliage fertilizer, and reached the maximum of 0.784 3 mg/kg and 0.816 7 mg/kg, respectively, when applying 23 g/hm2 selenium foliage fertilizer + 30 g/hm2 Na2SeO3, indicating that the selenium accumulation capacity of brown rice was higher than that of milled rice. ③ There were no significant effects of addressing selenium foliage fertilizer on content of cadmium and arsenic in milled rice and brown rice, suggesting that there was no synergistic effect between selenium and cadmium as well as arsenic during grain filling. Under the same dosage of selenium foliage fertilizer, the content of cadmium was higher in brown rice than that of milled rice, but without significance between them. However, the arsenic accumulation capacity of brown rice was significantly stronger than that of milled rice. |
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| Keywords: | rice foliage fertilizer selenium application cadmium content arsenic content |
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