氮锌配施对水稻生长、产量和养分吸收分配的影响
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作者单位:

华中农业大学

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中图分类号:

S143.1

基金项目:

国家重点研发计划“肥料养分推荐方法与限量标准”子课题(2016YFD0200108)


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

Huazhong Agricultural University

Fund Project:

National Key R&D Program of China

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    摘要:

    采用大田小区试验,以籼型杂交稻品种广两优35和常规粳稻品种日本晴为研究材料,设置3个锌水平和4个氮水平的交互处理,分析了各生育期水稻的生物量,成熟期产量及构成因素,各部位氮和锌的含量、累积量和分配比例。结果表明,氮锌配施对水稻早期的生长和后期的产量形成均具有协同增效效应,这种效应在不同水稻品种中具有一定的差异性。氮锌配施对水稻每公顷穗数具有极显著的正向交互效应,每公顷穗数的显著增加是氮锌配施下水稻产量提高的主要原因。氮锌配施不仅提高了水稻植株中的氮和锌含量,同时还促进了氮和锌向生殖器官(小穗)中分配,这可能是水稻产量提高的主要生理机制之一。

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