| 叶面过量施硒对玉米产量、硒和矿质营养元素含量的影响 |
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| 引用本文： | 蒋曦龙,乔月彤,李晓靖,王澜,薛燕慧,夏海勇.叶面过量施硒对玉米产量、硒和矿质营养元素含量的影响[J].核农学报,2021,35(12):2841-2849. |
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| 作者姓名： | 蒋曦龙 乔月彤 李晓靖 王澜 薛燕慧 夏海勇 |
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| 作者单位： | 山东省农业科学院作物研究所/山东省作物遗传改良与生态生理重点实验室/小麦玉米国家工程实验室,山东济南 250100;中国农业大学资源与环境学院,北京 100193;山东省农业科学院作物研究所/山东省作物遗传改良与生态生理重点实验室/小麦玉米国家工程实验室,山东济南 250100;山东师范大学生命科学学院,山东济南 250014;山东省农业科学院作物研究所/山东省作物遗传改良与生态生理重点实验室/小麦玉米国家工程实验室,山东济南 250100;山东省农业科学院作物研究所/山东省作物遗传改良与生态生理重点实验室/小麦玉米国家工程实验室,山东济南 250100;山东师范大学生命科学学院,山东济南 250014;青岛农业大学农学院,山东青岛 266109 |
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| 基金项目： | 国家重点研发计划项目(2017YFD0300407) |
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| 摘 要： | 为了明确过量施硒对作物生长的毒害效应,为合理施用硒肥提供依据,本研究在田间条件下探究了叶面过量施硒对糯玉米京科糯2000和普通玉米郑单958两个品种产量、硒含量和矿质营养元素含量的影响。结果表明,叶面喷硒量(亚硒酸钠)≤0.2 g·L-1时,京科糯2000植株生物量和籽粒产量与对照(不喷硒)相比持平或略有增加,未表现出毒害效应;京科糯2000在叶面喷硒量≥0.5 g·L-1时,郑单958在叶面喷硒量≥0.1 g·L-1时,其植株生物量和籽粒产量均明显降低;随着叶面喷硒浓度的增加,两品种玉米籽粒硒含量均逐步增加,郑单958产量和籽粒硒含量的变化幅度高于京科糯2000。叶面喷硒可显著提高玉米籽粒锌和铁的吸收量,对铜、磷、镁和钙的吸收基本无影响,但抑制硼的吸收。总体来看,过量施硒抑制2个不同品种玉米生长,造成产量下降,但可提高籽粒硒、锌和铁的营养水平。本研究对玉米微量元素营养调控具有一定的借鉴指导意义。
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| 关 键 词： | 玉米 硒胁迫 产量 硒含量 矿质元素吸收 |
| 收稿时间： | 2021-01-04 |
Effects of Foliar Spraying of Excessive Selenium on Yields and Contents of Selenium and Mineral Elements of Maize |
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| JIANG Xilong,QIAO Yuetong,LI Xiaojing,WANG Lan,XUE Yanhui,XIA Haiyong.Effects of Foliar Spraying of Excessive Selenium on Yields and Contents of Selenium and Mineral Elements of Maize[J].Acta Agriculturae Nucleatae Sinica,2021,35(12):2841-2849. |
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| Authors: | JIANG Xilong QIAO Yuetong LI Xiaojing WANG Lan XUE Yanhui XIA Haiyong |
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| Abstract: | To clarify the toxic effect of excessive selenium (Se) application on crop growth and provide a basis for rational application of Se fertilizer, the effects of foliar spraying of excessive Se on yields and contents of Se and mineral elements of the waxy maize cultivar Jingkenuo 2000 and the common maize cultivar Zhengdan 958 were investigated under field conditions. The results showed that when the amount of Na2SeO3 sprayed on the leaf surface was ≤ 0.2 g·L-1, the plant biomass and grain yield of the waxy corn Jingkenuo 2000 were equal to the control treatment or slightly increased, and no toxic effect was observed. When the spraying amount of Na2SeO3 on Jingkenuo 2000 and Zhengdan 958 exceed 0.5 g·L-1and 0.1 g·L-1, respectively, the biomass and grain yield decreased significantly. With the increase of the spraying amount of Na2SeO3, the Se concentrations in grains of these two maize cultivars were increased gradually. The yield and Se concentration in grain of Zhengdan 958 were more sensitive to the spraying amount of Na2SeO3 than that of Jingkenuo 2000. Foliar Na2SeO3 spraying could significantly promote the absorption of zinc (Zn) and iron (Fe) by maize grains, but had insignificant effects on the absorption of copper, phosphorus, magnesium and calcium, and inhibited the absorption of boron. In general, excessive foliar Na2SeO3 spraying inhibited maize yields, but improved the nutritional status of Se, Zn and Fe of the two maize cultivars; these results provided meaningful guidance on the regulation of micronutrient nutrition in maize plants. |
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| Keywords: | maize selenium stress yield selenium content absorption of mineral elements |
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