应用 15N分析施氮量对弱筋小麦氮素吸收利用与产量的影响
作者:
作者单位:

(安徽科技学院农学院,安徽 凤阳 233100)

作者简介:

吴培金(1992-),男,湖南省湘西州人,硕士研究生,研究方向为小麦高产优质栽培生理生态。E-mail:18098317841@163.com。

通讯作者:

基金项目:

基金项目:国家重点研发计划(2016YFD0300408,2017YFD0301301);安徽科技重大专项项目(160307001102);安徽自然科学基金项目(1408085MC48,1408085QC54)。


Effects of nitrogen fertilizer application rate on nitrogen uptake,utilization and yield of weak gluten wheat using 15N trace technique
Author:
Affiliation:

(College of Agronomy,AnhuiScience and TechnologyUniversity,Fengyang Anhui233100)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    为分析氮素水平对弱筋小麦植株氮素吸收利用的影响,以弱筋小麦品种宁麦 13和扬麦 13为材料,设置不同施氮水平(N105、210和 315 kg·hm -2),应用 15N示踪分析技术研究弱筋小麦植株氮素积累、转运与利用的变化。结果表明,弱筋小麦开花期、成熟期植株及成熟期籽粒氮素积累量均随施氮量增加而显著增加;来源于肥料氮和土壤氮均随施氮量增加而增加,且来源于土壤氮比例显著高于肥料氮。籽粒蛋白质含量随施氮量的增加而增高。弱筋小麦花后营养器官氮素向籽粒的转运率为 29.44%~ 41.25%,对籽粒氮素积累的贡献率为 36.51%~ 60.89%,均随施氮量的增加而降低。2个小麦品种的氮肥生产效率、氮肥利用效率均表现为N105>N210>N315,且 N315处理的氮素收获指数低于 N105、N210处理,即弱筋小麦籽粒氮肥生产效率、氮肥利用效率随施氮量的增加而降低。本试验条件下,保证弱筋小麦籽粒品质的同时,又有相对较高的籽粒产量、氮肥生产效率和氮素利用效率,适宜的施氮量应在 105~ 210 kg·hm -2之间。

    Abstract:

    In order to analyze the effects of nitrogen levels on nitrogen absorption and utilization of weak gluten wheatplants,weak gluten wheat cultivars Ningmai13 and Yangmai13 were used as test materials and three nitrogen rates with105,210, and 315 kg·hm -2were set up to study the variation regularity of nitrogenaccumulation,translocation and utilization in weakgluten wheat. The results showed that the nitrogen accumulations of the plant in the weak gluten wheat atflowering,the plant and grains in the weak gluten wheat at maturing stages were significantly increased with the increase of nitrogen rate. Bothnitrogen from fertilizer and soil increased with increasing nitrogenrate,and the proportions of soil nitrogen were significantly higher than that of fertilizer nitrogen. The nitrogen translation efficiency of the vegetative organs of weak gluten wheat to grainwas 29.44%~41.25%,and the nitrogen contribution proportion to grain was 36.51%~60.89%,both of them decreased with the increase of nitrogen rate. The nitrogen production efficiency and nitrogen use efficiency of weak gluten wheatdecreased with the increase of nitrogen rate. Under the conditions of thisexperiment,while ensuring the grain quality of weakglutenwheat,there is relatively high grainyield,nitrogen fertilizer production efficiency and nitrogen useefficiency,the suitable nitrogen application rate should be between 105 and 210 kg·hm -2.

    参考文献
    相似文献
    引证文献
引用本文

吴培金,闫素辉,张从宇,邵庆勤,许峰,李文阳.应用 15N分析施氮量对弱筋小麦氮素吸收利用与产量的影响[J].中国土壤与肥料,2019,(4):121-126.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2018-08-28
  • 最后修改日期:
  • 录用日期:2018-11-21
  • 在线发布日期: 2019-09-02
《中国土壤与肥料》招聘启事
关闭