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      2. 氮鋅配施對水稻生長、產量和養分吸收分配的影響
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        華中農業大學

        作者簡介:

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        中圖分類號:

        S143.1

        基金項目:

        國家重點研發計劃“肥料養分推薦方法與限量標準”子課題(2016YFD0200108)


        Effect of combined application of nitrogen and zinc on rice growth, yield production, nutrient uptake and distribution
        Author:
        Affiliation:

        Huazhong Agricultural University

        Fund Project:

        National Key R&D Program of China

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          摘要:

          采用大田小區試驗,以秈型雜交稻品種廣兩優35和常規粳稻品種日本晴為研究材料,設置3個鋅水平和4個氮水平的交互處理,分析了各生育期水稻的生物量,成熟期產量及構成因素,各部位氮和鋅的含量、累積量和分配比例。結果表明,氮鋅配施對水稻早期的生長和后期的產量形成均具有協同增效效應,這種效應在不同水稻品種中具有一定的差異性。氮鋅配施對水稻每公頃穗數具有極顯著的正向交互效應,每公頃穗數的顯著增加是氮鋅配施下水稻產量提高的主要原因。氮鋅配施不僅提高了水稻植株中的氮和鋅含量,同時還促進了氮和鋅向生殖器官(小穗)中分配,這可能是水稻產量提高的主要生理機制之一。

          Abstract:

          The popular used rice cultivar Guangliangyou 35 and conventional japonica rice cultivar Nipponbare were treated with combined application of three Zn levels and four N levels in field trials. We analyzed the shoot dry weight at different growth stages, the yield and its components at mature stage as well as the N and Zn concentrations, accumulations and distributions in different organs and tissues. Results showed that the combined application of N and Zn fertilizers had synergistic effect on both the rice biomass at the early growth stage and the yield production at the mature stage. The combined application of N and Zn fertilizers had significant synergistic effect on rice panicle numbers. The significantly increased panicle numbers determined the increased yield under the combined application of N and Zn fertilizers. The combined application of N and Zn fertilizers not only increased the concentrations of N and Zn in rice plant, but also promoted the N and Zn distribution to the productive organ (spikelet), which is one of the main physiological mechanisms of increased yield production under the combined application of N and Zn fertilizers.

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        歷史
        • 收稿日期:2020-07-21
        • 最后修改日期:2020-09-08
        • 錄用日期:2020-09-08
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