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不同基因型冬小麦对氮肥与锌铁肥配施的反应

ISSN号：1000-7601
期刊名称：《干旱地区农业研究》
时间：0
分类：S143.72[农业科学—肥料学;农业科学—农业基础科学] Q945.12[生物学—植物学]
作者机构：[1]西北农林科技大学资源环境学院,陕西杨凌712100
相关基金：国家自然科学基金重点项目（30230230）;西北农林科技大学青年学术骨干支持计划项目

作者：杨习文[1], 田霄鸿[1], 武绍飞[1], 保琼莉[1], 李生秀[1]

关键词：小麦基因型, 生物量, 分蘖数, 锌、铁含量, wheat genotypes, seedling yield, tillers, zinc, iron concentration and uptake.

中文摘要：

以10种不同基因型冬小麦为材料,采用田间再裂区设计,研究了不同氮肥用量（0,105 kg N/hm2）与锌铁用量（Zn：0,6.8 kg/hm2;Fe：0,12.1 kg/hm2）对冬小麦幼苗（返青期）生长及锌铁吸收的影响。结果表明,施氮对10种基因型冬小麦的生物量、分蘖数和叶绿素SPAD值均有显著影响,增幅分别达到15.8%,14.7%,4.6%;施用锌铁肥后生物量增加8.0%,但分蘖数减少5.8%,而对叶绿素SPAD值几乎无影响;10种不同基因型小麦植株的长势有较大差异。施用氮肥后,显著提高了各基因型小麦植株的锌含量与锌携出量,平均提高7.6%和22.9%,而小麦植株铁的含量降低6.4%,但携出量提高7.2%;施用锌铁肥显著增加了小麦的锌含量和携出量,增幅分别11.9%和19.2%,但对铁的含量和携出量影响不显著。10种不同基因型小麦植株锌铁携出量存在一定差异,吸收值较高的三种基因型分别为绵阳31、陕优225、陕优253。

英文摘要：

In this study, a field experiment with split - split design was conducted using 10 winter wheat genotypes to investigate the effects of combination of nitrogen, zinc and iron fertilizers on growth, and zinc and iron uptake by seedling plants during the reviving stage of winter wheat. Nitrogen rates （0, 105 kg N/hm^2） and different rates of Zn, Fe fertilizers （0, 6.8 kg Zn/hm^2 ; that nitrogen fertilization significantly influenced on 0, 12.1 kg Fe/hm^2） were adopted. The results showed seedling of 10 types of wheat genotypes, and they were increased of zinc and iron fertilizers also significantly influenced on by yield, number of tillers and chlorophyll SPAD value 15.8 %, 14.7 %, 4.6 %, respectively. Application seedling yield, number of tillers, but almost did not impose on chlorophyll SPAD value; the seedling yield increased by 8.0 %, but the number of tillers decreased 5.8 % ; the growth status of different genotypes of wheat showed large variation. The nitrogen fertilization could greatly increase zinc concentration and uptake to all of wheat genotypes tested, and they increased by 7.6%, 22.9% averagely, respectively, but the iron concentration decreased 6.4% and the iron uptake increased by 7.2 % ; Application of Zn, Fe fertilizers increased significantly zinc concentration and uptake by 11.9 %, 19.2 % respectively, but there was no obvious influences on iron concentration and uptake. There existed some differences for concentration and uptake of zinc and iron among varied wheat genotypes, the large,st three genotypes for uptake amount of zinc and iron were Mianyang 31, Shanyou 225 and Shanyou 253.

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