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氮肥用量对苦荞内源激素、产量和品质的影响

罗庆华 李振宙 林俊清 王炎 周良 黄小燕 黄凯丰 陈庆富

罗庆华, 李振宙, 林俊清, 王炎, 周良, 黄小燕, 黄凯丰, 陈庆富. 氮肥用量对苦荞内源激素、产量和品质的影响[J]. 福建农业学报, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003
引用本文: 罗庆华, 李振宙, 林俊清, 王炎, 周良, 黄小燕, 黄凯丰, 陈庆富. 氮肥用量对苦荞内源激素、产量和品质的影响[J]. 福建农业学报, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003
LUO Qing-hua, LI Zhen-zhou, LIN Jun-qing, WANG Yan, ZHOU Liang, HUANG Xiao-yan, HUANG Kai-feng, CHEN Qing-fu. Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat[J]. Fujian Journal of Agricultural Sciences, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003
Citation: LUO Qing-hua, LI Zhen-zhou, LIN Jun-qing, WANG Yan, ZHOU Liang, HUANG Xiao-yan, HUANG Kai-feng, CHEN Qing-fu. Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat[J]. Fujian Journal of Agricultural Sciences, 2019, 34(3): 271-277. doi: 10.19303/j.issn.1008-0384.2019.03.003

氮肥用量对苦荞内源激素、产量和品质的影响

doi: 10.19303/j.issn.1008-0384.2019.03.003
基金项目: 

国家自然科学基金项目 31560358

贵州省科技支撑计划项目 黔科合支撑[2018]2297号

贵州省科技支撑计划项目 [2019]2297号

贵州省教育厅创新群体重大研究项目 黔教合KY字[2017]033

贵州省教育厅创新群体重大研究项目 黔教合KY字[2018]015

详细信息
    作者简介:

    罗庆华(1960-), 女, 高级实验师, 主要从事荞麦栽培生理研究(E-mail:1248224124@qq.com)

    通讯作者:

    黄小燕(1967-), 女, 教授, 硕士生导师, 主要从事荞麦栽培生理研究(E-mail:huangxy666@126.com)

    黄凯丰(1979-), 男, 博士, 教授, 硕士生导师, 主要从事荞麦栽培生理研究(E-mail:hkf1979@163.com)

  • 中图分类号: S517

Effects of Nitrogen Application Level on Endogenous Hormones, Yield and Quality of Tartary Buckwheat

  • 摘要:   目的  明确氮肥用量与苦荞内源激素、产量和品质的关系。  方法  以苦荞品种黔苦6号为试验材料,设置不施氮(CK)、低氮(LN,施氮量50 kg·hm-2)、中氮(MN,施氮量100 kg·hm-2)、高氮(HN,施氮量150 kg·hm-2)处理,研究其对苦荞根际土壤、根系形态、叶片内源激素及产量和品质的影响。  结果  苦荞根际土壤中的碱解氮、有效磷、速效钾含量随氮肥用量的增加表现为先增加后降低;苦荞根系长度、根系表面积、根系体积随施氮量的增加表现为先增加后降低,以MN处理最大,CK处理最小,氮肥对苦荞根系平均直径影响不大;苦荞叶片中的1-氨基环丙烷-1-羧酸(ACC)、生长素(IAA)、玉米素(Z)+玉米素核苷(ZR)和多胺含量随氮肥用量的增加表现为先增加后降低,脱落酸(ABA)含量则表现为先降低后增加;苦荞的株高、主茎分枝数、单株粒数、单株粒重、千粒重和产量均随施氮量的增加表现为先增加后降低,氮肥对苦荞主茎节数影响不大;苦荞籽粒中的蛋白质、总膳食纤维、芦丁、槲皮素和山奈酚含量随施氮量的增加表现为先增加后降低,黄酮含量以CK处理最高、HN处理最低。  结论  苦荞的适宜氮肥用量为100 kg·hm-2,氮肥过量或不足,均会导致最终产量和品质的下降。
  • 表  1  氮肥用量对苦荞根际土壤养分和有机质含量的影响

    Table  1.   Effect of nitrogen application levels on nutrients in rhizosphere soil

    处理
    Treatment
    碱解氮
    Available nitrogen
    /(mg·kg-1)
    有效磷
    Available phosphorus
    /(mg·kg-1)
    速效钾
    Available potassium
    /(mg·kg-1)
    有机质
    Organic matter
    /(g·kg-1)
    CK5.61 ±0.29d21.53±1.23d112.72±1.57b31.37±1.00a
    LN22.38 ±1.02c68.80±2.42c142.30±1.32a31.26±1.27a
    MN86.52 ±3.23a117.21±3.27a144.20±2.02a32.18±1.11a
    HN71.44 ±1.05b88.31±1.39b118.89±1.12b28.10±1.16b
    注:同列数字后不同字母表示显著差异(P < 0.05),表 2~5同。
    Note: Different lowercase letters behind the number in the same column indicated significant differences (P < 0.05).The same as Table 2-5.
    下载: 导出CSV

    表  2  氮肥用量对苦荞根系形态的影响

    Table  2.   Effect of nitrogen application levels on root morphology of buckwheat plants

    处理
    Treatment
    长度
    Length/cm
    表面积
    Surface area/cm2
    体积
    Bulk/cm3
    平均直径
    Average diameter/mm
    CK41.27±0.68d7.08±0.01d0.23±0.02d0.526±0.005a
    LN56.70±0.36b11.14±0.10b0.50±0.01b0.533±0.003a
    MN73.62±0.20a19.38±0.02a0.71±0.01a0.542±0.006a
    HN48.03±0.21c8.22±0.011c0.36±0.03c0.532±0.009a
    下载: 导出CSV

    表  3  氮肥用量对苦荞叶片内源激素含量的影响

    Table  3.   Effect of nitrogen application levels on endogenous hormones content in buckwheat plants


    处理
    Treatment
    脱落酸
    ABA/(pmol·g-1)
    生长素
    IAA/(pmol·g-1)
    玉米素+玉米素核苷
    Z+ZR/(pmol·g-1)
    1-氨基环丙烷-1-羧酸
    ACC/(nmol·g-1)
    多胺
    Polyamine/ (nmol·g-1)
    CK7.14±0.08a68.2±0.12c21.6±0.03c1.18±0.01d1320.6±10.08c
    LN3.81±0.12c73.6±0.18b25.1±0.07b1.66±0.02b1427.3±11.27b
    MN2.30±0.07d80.1±0.09a33.3±0.13a1.94±0.10a1522.0±9.25a
    HN5.16±0.11b59.4±0.07d32.8±0.21a1.36±0.07c1368.1±10.29c
    下载: 导出CSV

    表  4  氮肥用量对苦荞生长及产量的影响

    Table  4.   Effects of nitrogen application levels on agronomic traits and yield of buckwheat

    处理
    Treatment
    株高
    Plant height
    /cm
    主茎节数
    Stem
    nodes
    主茎分枝数
    Stem
    branches
    单株粒数
    Grain number
    per plant
    单株粒重
    Grain weight
    per plant/g
    千粒重
    Thousand seed
    weight/g
    产量
    Yield
    /(kg·hm-2)
    CK46.8±2.13c13.1±0.12a5.6±0.01b122.6±7.23d3.08±0.26c18.02±0.13d512.8±10.02d
    LN71.0±3.22b13.6±0.27a5.9±0.01b190.8±6.51c3.97±0.31b21.25±0.27c1138.6±11.34b
    MN82.7±3.38a14.0±0.16a7.3±0.08a286.2±6.92a4.86±0.67a28.92±0.36a1527.3±12.39a
    HN44.3±2.16c13.3±0.18a4.2±0.04c227.0±7.18b3.88±0.18b24.69±0.24b922.5±10.84c
    下载: 导出CSV

    表  5  氮肥用量对苦荞品质的影响

    Table  5.   Effect of nitrogen application levels on quality of buckwheat

    处理
    Treatment
    蛋白质
    Protein
    /%
    总膳食纤维
    TDF
    /%
    黄酮
    Flavonoid
    /%
    芦丁
    Rutin
    /(102mg·mL-1)
    槲皮素
    Quercitrin
    /(102mg·mL-1)
    山奈酚
    Kaempferol
    /(mg·mL-1)
    CK15.28±1.02c12.49±1.17c1.83±0.26a0.42±0.05c0.80±0.06b0.14±0.01d
    LN19.06±1.37b13.08±1.23c1.59±0.31c0.60±0.06a0.98±0.02a0.30±0.01b
    MN25.70±1.08a20.84±1.19a1.71±0.25b0.59±0.02a0.96±0.08a0.39±0.06a
    HN24.35±1.29a17.90±1.38b1.27±0.26d0.51±0.07b0.77±0.05b0.21±0.04c
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-11-20
  • 修回日期:  2019-02-10
  • 刊出日期:  2019-03-28

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