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作物杂志,2019, 第3期: 150–154 doi: 10.16035/j.issn.1001-7283.2019.03.024

• 生理生化·植物营养·栽培耕作 • 上一篇    下一篇

外源硒对苦荞生长发育及子粒硒含量的影响

宋丽芳,冯美臣,张美俊,肖璐洁,王超,杨武德,宋晓彦   

  1. 山西农业大学农学院,030801,山西太谷
  • 收稿日期:2018-10-11 修回日期:2018-12-22 出版日期:2019-06-15 发布日期:2019-06-12
  • 通讯作者: 宋晓彦
  • 作者简介:宋丽芳,在读硕士,研究方向为作物生态与信息技术;
  • 基金资助:
    山西省重点研发计划重点项目(201603D21102);山西省重点研发计划重点项目(201703D211001-03)

Effects of Exogenous Selenium on the Growth and Development of Tartary Buckwheat and Selenium Content in Grains

Song Lifang,Feng Meichen,Zhang Meijun,Xiao Lujie,Wang Chao,Yang Wude,Song Xiaoyan   

  1. College of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, China
  • Received:2018-10-11 Revised:2018-12-22 Online:2019-06-15 Published:2019-06-12
  • Contact: Xiaoyan Song

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摘要：

为了研究外源硒对苦荞生长发育及子粒硒含量的影响,在开花期对大田苦荞喷施不同浓度亚硒酸钠（0、2.5、5.0、10.0和20.0mg/L）,分析在喷硒后5、10、15和35d地上部干生物量和鲜生物量、叶面积指数、叶绿素含量、产量及子粒硒含量的变化。结果表明：（1）在Se1（2.5mg/L）水平下外源硒能够显著提高苦荞地上部干和鲜生物量、叶面积指数、叶绿素含量;（2）在Se2（5.0mg/L）水平下能够显著提高苦荞产量,与对照相比,增幅为13.49%;（3）施硒可以显著提高苦荞子粒硒含量,子粒硒含量随喷施硒浓度的增加而增加,增幅为0.8%~4.2%。综上,适量外源硒能够促进苦荞生长发育,提高产量及子粒硒含量。

关键词: 苦荞, 亚硒酸钠, 产量, 子粒硒含量

Abstract:

In order to study the effects of exogenous selenium on the growth and development of tartary buckwheat and selenium content in grains at the flowering stage, different concentrations of sodium selenite (0, 2.5, 5.0, 10.0, 20.0mg/L) were sprayed on the field of tartary buckwheat.The changes of dry biomass, leaf area index, chlorophyll content, yield and selenium content of the aboveground at 5, 10, 15 and 35d after spraying selenium were analyzed. The results showed: (1) Exogenous selenium can significantly increase the dry biomass, leaf area index and chlorophyll content of tartary buckwheat at Se1 (2.5mg/L) level; (2) At the level of Se2 (5.0mg/L), the yield of tartary buckwheat significantly increased by 13.49% compared with the control; (3) Selenium application increased the selenium content of tartary buckwheat grain, and the selenium content of tartary buckwheat grain increased with the increase of selenium concentration. In summary, an appropriate amount of exogenous selenium can promote the growth and development of tartary buckwheat, increase yield and selenium content of grain.

Key words: Tartary buckwheat, Sodium selenite, Yield, Grain selenium content

图1

喷硒对苦荞地上生物量的影响 不同小写字母代表处理之间差异达5％显著水平。下同"

图2

喷硒对苦荞叶面积指数的影响"

图3

喷硒对苦荞叶绿素含量影响"

表1

喷硒对苦荞千粒重、产量、子粒硒含量的影响"

处理
Treatment		 千粒重(g)
1000-grain weight		 子粒产量(kg/hm2)
Grain yield		 子粒硒含量(mg/kg)
Grain selenium content
Se0 21.93±0.13cC 2 472.3±7.47cC 0.15±0.02eE
Se1 23.00±0.05bB 2 723.4±4.30bB 0.27±0.01dD
Se2 23.67±0.06aA 2 805.9±7.17aA 0.38±0.01cC
Se3 22.92±0.15bB 2 499.0±2.38cC 0.57±0.03bB
Se4 20.38±0.12dD 2 065.5±6.10dD 0.78±0.04aA
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