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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (20): 154-159.

所属专题： 水稻

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

水稻灌浆过程中籽粒铁、锰、铜、锌、镁、钙的积累动态

俄胜哲 袁继超 丁志勇 姚凤娟 喻小坪 罗付香   

  • 收稿日期:2009-05-31 修回日期:2009-06-25 出版日期:2009-10-20 发布日期:2009-10-20
  • 基金资助:

    国家科技支撑计划项目

Study on the Dynamic of Accumulation of Fe, Zn, Cu, Mn, Mg and Ca in Rice grains During Filling Stage

  • Received:2009-05-31 Revised:2009-06-25 Online:2009-10-20 Published:2009-10-20

PDF (PC)

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摘要：

本文通过田间试验，研究了糙米中Fe、Zn、Cu、Mn、Mg、Ca含量和积累量的动态变化及其与籽粒蛋白质含量的关系，结果表明：在开花后，水稻籽粒中Fe、Zn、Cu、Mn、Mg、Ca的含量迅速降低，开花10天后降速变缓，20天后趋于稳定；就花后矿质元素含量的变化幅度而言，6种矿质元素中以Ca的变幅最大，Mg的变幅最小，供试品种中籼型品种滇屯502的变幅明显大于粳型品种合系39；水稻花后籽粒中Fe、Zn、Cu、Mn、Mg、Ca含量的变化趋势与蛋白质含量的变化趋势基本一致，蛋白质含量与6种矿质元素含量呈极显著正相关关系；水稻花后籽粒中Fe、Zn、Cu、Mn、Mg的积累动态符合logistic方程，其积累的快增期和实际增长期较籽粒干物质积累的快增期和实际增长期早而短。

关键词: 烟叶霉变, 烟叶霉变, 霉菌, 防治措施

Abstract:

By a field experiment, the dynamic of Fe、Zn、Cu、Mn、Mg and Ca contents and accumulation rate in rice grains, and their relationships with protein content were studied. The results indicated that the content of Fe, Zn, Cu, Mn, Ca and Mg in rice grains decreased rapidly during the first 10 days after flowering, and became stability after 20 days after flowering. Among the 6 mineral elements, the variable degree of Ca content in rice after flowering was the greatest, while that of Mg content the least. The variable degree of the 6 mineral elements content in rice after flowering of Indica rice Diantun502 was larger than that of Japonica rice Hexi 39. The dynamic trend of the 6 elements content and protein content in rice after flowering were the same. There were significant relationship between the 6 elements content and protein content in rice. The dynamic development of Fe, Zn, Cu, Mn and Mg accumulation in rice after flowering were fit to logistic regression equation. The rapid increasing period and actual increasing period of the 5 mineral elements accumulation after flowering were earlier and shorter than that of dry matter accumulation in rice.