| 祝姣姣，聂兆君，赵 鹏，李金峰，秦世玉，李 畅，刘红恩，李永革.磷硒配施对郑麦9023硒吸收及土壤硒形态转化的影响[J].麦类作物学报,2020,(6):722 |
| 磷硒配施对郑麦9023硒吸收及土壤硒形态转化的影响 |
| Effect of Phosphorus Combined with Selenium Application on Selenium Absorption and the Transformation of Chemical Forms of Selenium in Soil of Zhengmai 9023 |
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| DOI：10.7606/j.issn.1009-1041.2020.06.10 |
| 中文关键词: 磷 硒 硒吸收 硒形态转化 郑麦9023 |
| 英文关键词:Phosphorus Selenium Absorption Se chemical forms transformation Zhengmai 9023 |
| 基金项目:国家“十三五”重点研发计划课题（2017YFD0201700）; 河南省教育厅基础研究专项（19zx007）;国家自然科学基金项目（41201286；41501311） |
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| 中文摘要: |
| 为给通过合理施用磷肥来提高冬小麦籽粒硒含量提供参考依据，以冬小麦品种郑麦9023为供试材料进行盆栽试验，设置3个磷水平（0、80、160 mg·kg-1,分别表示为P0 、P80 和P160）和 2个硒水平（0和 1 mg·kg-1，分别表示为Se0和Se1），共6个处理。结果表明，在Se0水平下，籽粒产量随着施磷量的增加而逐渐提高，而在Se1水平下，籽粒产量随着施磷量的增加呈先增加后降低的趋势，在P80处理下籽粒产量最高。在Se1水平下，施磷显著增加了小麦各器官以及整株硒累积量，但是施磷降低了硒从颖壳向籽粒中的迁移系数，显著降低了各器官的硒含量。施硒可提高土壤各形态硒的含量，提高水溶态和可交换态硒的比例。在Se0水平下施磷可以提高土壤水溶态硒、可交换态硒、铁锰氧化物结合态硒所占总硒的比例；而在Se1水平下，施磷增加了土壤水溶态硒、有机物硫化物结合态硒、残渣态硒的含量及比例，但是降低了可交换态硒、铁锰氧化物结合态硒的含量及比例。因此，适宜的磷硒配施可通过影响土壤中各种形态硒的转化过程，促进土壤硒向水溶态硒的转化，提高土壤硒的有效性，进而促进郑麦9023对土壤硒的吸收累积，达到增产的效果。 |
| 英文摘要: |
| In order to provide reference to improve selenium content in winter wheat grains through application of phosphorus fertilizer,a wheat(Triticum aestivum L.) cultivar Zhengmai 9023 was chosen as the test material. A pot experiment with three phosphorus(P) levels(0,80 and 160 mg·kg-1,respectively,termed as P0 ,P80 and P160) and two selenium(Se) levels(0 and 1 mg·kg-1,respectively,termed as Se0 and Se1). The results showed that the yield was increased with the increasing P application at Se0,while at Se1,the grain yield was firstly increased and then decreased with the increasing P application,where the highest value appeared under the P80 treatment. At Se1,P application significantly increased Se accumulation in each tissue as well as in whole plant,but reduced Se migration coefficient from glumes to grains and Se concentration in each tissue. Se application increased the concentration of each chemical form of Se in soil,and promoted the proportion of water-soluble and exchangeable Se. At Se0,P application increased the concentration and proportion of water-soluble,exchangeable and iron-manganese oxide bound Se in soil; at Se1,P application increased the concentration and proportion of water-soluble,organic sulfide bound and residual Se,but reduced the concentration and proportion of exchangeable and iron-manganese oxide bound Se in soil. Appropriate P combined with Se application enhanced the absorption of Se by Zhengmai 9023 and thus increased the grain yield via promoting transformation of Se from other forms to water-soluble form to improve the availability of Se in soil. |
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