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酸性土壤条件下铁膜调控技术对水稻根表铁膜和籽粒硒累积的影响

杨旭健 田宇豪 沈宏

杨旭健, 田宇豪, 沈宏. 酸性土壤条件下铁膜调控技术对水稻根表铁膜和籽粒硒累积的影响[J]. 中国生态农业学报 (中英文), 2022, 30(7): 1174−1185 doi: 10.12357/cjea.20210629
引用本文: 杨旭健, 田宇豪, 沈宏. 酸性土壤条件下铁膜调控技术对水稻根表铁膜和籽粒硒累积的影响[J]. 中国生态农业学报 (中英文), 2022, 30(7): 1174−1185 doi: 10.12357/cjea.20210629
YANG X J, TIAN Y H, SHEN H. Effect of iron plaque controlling techniques on iron plaque formation on rice (Oryza sativa) root surface and accumulation of selenium in grains under acidic soil condition[J]. Chinese Journal of Eco-Agriculture, 2022, 30(7): 1174−1185 doi: 10.12357/cjea.20210629
Citation: YANG X J, TIAN Y H, SHEN H. Effect of iron plaque controlling techniques on iron plaque formation on rice (Oryza sativa) root surface and accumulation of selenium in grains under acidic soil condition[J]. Chinese Journal of Eco-Agriculture, 2022, 30(7): 1174−1185 doi: 10.12357/cjea.20210629

酸性土壤条件下铁膜调控技术对水稻根表铁膜和籽粒硒累积的影响

doi: 10.12357/cjea.20210629
基金项目: 广东省自然科学基金项目(2021A1515012113)和广东省教育厅普通高校重点领域研究项目(2020ZDZX1002)资助
详细信息
    作者简介:

    杨旭健, 主要研究方向为植物根际营养元素行为及养分吸收调控技术。E-mail: zh_yangxujian@scau.edu.cn

    通讯作者:

    沈宏, 主要研究方向为生物激素与功能性肥料研制、作物根层调控与土壤植物健康诊断技术。E-mail: hshen@scau.edu.cn

  • 中图分类号: S363

Effect of iron plaque controlling techniques on iron plaque formation on rice (Oryza sativa) root surface and accumulation of selenium in grains under acidic soil condition

Funds: This study was supported by the Natural Science Foundation of Guangdong Province (2021A1515012113) and the Key Issue Research Program for General Higher Education Institutes of Guangdong Department of Education (2020ZDZX1002).
More Information
  • 摘要: 铁膜是水稻根系表面形成的铁(氢)氧化物胶膜。它不仅增强根系对水生环境的适应, 而且显著影响植株养分吸收。但如何通过调控根表铁膜形成, 提高水稻籽粒硒含量还有待进一步探索。本研究在弱酸性(pH 6.1)土壤盆栽条件下, 对水稻植株进行不同水平的磷铁比、过氧化尿素及干湿交替处理, 研究了上述3种铁膜调控技术对水稻根表铁膜形成及籽粒硒累积的影响。结果表明: 与常规施肥处理相比, 磷铁比1∶5处理的根表铁膜含量和籽粒硒含量均有显著提高。90 kg∙hm−2过氧化尿素处理的根表铁膜含量和籽粒硒含量明显高于不施用过氧化尿素处理。另外, 持续淹水处理的根表铁膜含量和籽粒硒含量显著高于对照和干湿交替处理。相关分析表明, 磷铁比和过氧化尿素处理试验条件下, 非结晶态和结晶态铁膜含量与籽粒硒含量都显著线性相关。正交试验当中, 根表铁膜形成量最高且籽粒硒含量增加最显著的铁膜调控技术是磷铁比 为1∶1、过氧化尿素用量为90 kg∙hm−2、持续淹水组合处理, 该条件下籽粒硒含量为0.116 μg∙g−1, 是对照的2.01倍。方差分析表明, 3种调控技术对根表铁膜含量和水稻籽粒硒含量影响程度顺序为过氧化尿素处理>干湿交替处理>磷铁比处理。综上所述, 铁膜调控技术能促进水稻根表铁膜形成及硒在根系累积, 从而增加水稻籽粒硒累积, 该研究结果对富硒水稻生产具有科学意义。
  • 图  1  磷铁比对水稻根表铁膜成分含量(a)和铁膜结晶比(b)的影响

    数据以平均值±标准误形式表示(n=3), 同一指标不同小写字母表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). Data of the same parameter with different letters are significantly different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  1.  Effect of phosphate-iron ratio on components contents (a) and crystalline ratio (b) of iron plaque on rice root surface

    图  2  磷铁比对水稻各部位硒含量的影响

    数据以平均值±标准误形式表示(n=3), 同一指标不同字母的数据表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). Data of the same organ with different letters are significantly different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  2.  Effect of phosphate-iron ratio on Se contents of rice organs

    图  3  过氧化尿素对根表铁膜成分含量(a)和结晶比(b)的影响

    数据以平均值±标准误形式表示(n=3), 同一指标不同字母的数据表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). Data of the same parameter with different letters are significantly different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  3.  Effect of urea peroxide to components contents (a) and crystalline ratio (b) of iron plaque on rice root surface

    图  4  过氧化尿素对水稻各部位硒含量的影响

    数据以平均值±标准误形式表示(n=3), 同器官不同字母的数据表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). Data of the same organ with different letters are significantly different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  4.  Effect of urea peroxide on Se contents of rice organs

    图  5  干湿交替对根表铁膜成分含量(a)和结晶比(b)的影响

    数据以平均值±标准误形式表示(n=3), 同一指标不同字母的数据表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). Data of the same parameter with different letters are significantly different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  5.  Effect of alternation of wetting and drying (AWD) to components contents (a) and crystalline ratio (b) of iron plaque on rice root surface

    图  6  干湿交替对水稻各部位硒含量的影响

    数据以平均值±标准误形式表示(n=3), 同一指标不同字母的数据表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). Data of the same organ with different letters are significant different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  6.  Effect of alternation of wetting and drying (AWD) to Se contents of rice organs

    图  7  不同磷铁比(a, d)、过氧化尿素(b, e)及干湿交替(c, f)处理下铁膜含量与水稻籽粒硒含量的相关性

    NS: 相关不显著; **: 相关极显著(P<0.01)。NS: no significant; **: extremely significant (P<0.01).

    Figure  7.  Correlation between grain Se content and contents of iron plaque forming under different phosphate-iron ratios (a, d), urea peroxide (b, e) and alternation of wetting and drying (AWD) (c, f) treatments

    图  8  不同处理组合对根表铁膜成分含量和结晶比的影响

    各处理说明见表1。数据以平均值±标准误形式表示(n=3), 同一指标不同字母的数据表示以Duncan检验进行多重比较差异显著(P<0.05)。The description of each treatment is shown in the table 1. Data are presented in forms of mean±standard error (n=3). Data with different letters are significant different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  8.  Effect of different treatment combinations on components and crystalline ratios of iron plaque on rice root surface

    图  9  不同处理组合对水稻籽粒硒含量的影响

    各处理说明见表1。数据以平均值±标准误形式表示(n=3), 不同字母表示以Duncan检验进行多重比较差异显著(P<0.05)。Data are presented in forms of mean±standard error (n=3). The description of each treatment is shown in the table 1. Data with different letters are significant different (P<0.05) by Duncan’s Multiple Analysis Test.

    Figure  9.  Effect of different treatment combinations on rice grain Se content

    表  1  水稻铁膜调控技术正交试验处理

    Table  1.   Orthogonal experiment treatments of rice iron plaque controlling techniques

    处理号
    Treatment No.
    因素 Factor
    磷铁比
    Phosphate-iron ratio (A)
    过氧化尿素
    Urea peroxide (kg∙hm−2) (B)
    干湿交替
    Alternation of wetting and drying (AWD) (C)
    11∶130干湿交替1次 One cycle of AWD
    21∶330干湿交替3次 Three cycles of AWD
    31∶530持续淹水 Long-term waterlogging
    41∶160干湿交替3次 Three cycles of AWD
    51∶360持续淹水 Long-term waterlogging
    61∶560干湿交替1次 One cycle of AWD
    71∶190持续淹水 Long-term waterlogging
    81∶390干湿交替1次 One cycle of AWD
    91∶590干湿交替3次 Three cycles of AWD
    下载: 导出CSV

    表  2  不同处理组合对铁膜含量和籽粒硒含量影响的方差分析(F值)

    Table  2.   Analysis of variances (F values) of the effect of treatment combinations on iron plaque contents and grain Se content

    磷铁比
    Phosphate-iron ratio
    过氧化尿素
    Urea peroxide
    干湿交替
    Alternation of wetting and drying
    交互作用
    Interaction
    非结晶态铁膜含量
    Amorphous iron plaque content
    1.33NS20.72**10.83**11.87**
    结晶态铁膜含量
    Crystalline iron plaque content
    27.21**265.24**66.52**0.60NS
    籽粒硒含量
    Grain Se content
    0.54NS60.13**21.81**10.84**
      NS: 不显著; *: 显著(P<0.05); **: 极显著(P<0.01)。NS: no significant; *: significant (P<0.05); **: extremely significant (P<0.01).
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-09-15
  • 录用日期:  2021-12-11
  • 网络出版日期:  2021-12-30
  • 刊出日期:  2022-07-05

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