种施硒肥对春小麦富硒效应及硒素分配的影响

doi:10.3969/j.issn.2096-1197.2019.02.09

北方农业学报 ›› 2019, Vol. 47 ›› Issue (2): 52-58.doi: 10.3969/j.issn.2096-1197.2019.02.09

种施硒肥对春小麦富硒效应及硒素分配的影响

赵利梅[1];孙文静[2];高炳德[3]

[1]浙江中医药大学药学院,浙江杭州311402;[2]内蒙古自治区环境监测中心站,内蒙古呼和浩特010011;[3]内蒙古农业大学草原与资源学院,内蒙古呼和浩特010019

收稿日期:2019-02-25 出版日期:2019-02-19 发布日期:2019-08-19
作者简介:赵利梅(1973—),女,副教授,博士,主要从事农产品品质、药用植物栽培与养分综合管理的研究工作;通讯作者:高炳德(1939-),男,教授,学士,硕士生导师,主要从事植物营养与土壤肥料的研究工作。

Influence of selenium fertilizer as seed manure on selenium absorption and distribution in spring wheat

ZHAO Limei[1];SUN Wenjing[2];GAO Bingde[3]

[1]College of Pharmacutical Science,Zhejiang Chinese Medical University,Hangzhou 311402,China;[2]Inner Mongolia Environmental Monitoring Center Station,Hohhot 010011,China;[3]College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010019,China

Received:2019-02-25 Online:2019-02-19 Published:2019-08-19

摘要/Abstract

摘要： 以宁春4号春小麦为材料,采用田间试验与化学分析相结合的方法,在内蒙古土默川平原就种施硒肥对春小麦硒素吸收分配的影响及硒肥施用量、施用方法对籽粒硒素含量的影响进行了研究。结果表明:随着种施硒肥用量的增加,籽粒Se含量也随之提高。在种施硒肥用量75~300g/hm2(折合Se素34.29~136.89g/hm^2)范围内,可使籽粒Se含量达到0.103~0.218mg/kg的安全富硒水平。而采用拌种或侧深施两种方法之间,籽粒Se含量无显著差异;种施硒肥(150g/hm^2)后,春小麦在生育期中全株Se含量为0.093~0.514mg/kg,平均为0.219mg/kg,比对照提高2.6倍。不同器官Se素含量的顺序是叶>籽粒>颖壳>茎。成熟期对各器官富集效应的顺序是:茎>籽粒>颖壳>叶;春小麦全株Se素吸收量变化呈“S”形曲线。种施硒肥春小麦全株Se素吸收量变化规律可用Logistic方程定量表达,Se素最快吸收速率达0.017μg/(d·株),比对照提高325%;随着生育进程的推进,Se素在叶中的分布逐渐降低,籽粒中分布逐渐提高。成熟期,种施硒肥Se素收获指数为42.0%,比对照提高了4.3百分点,促进了Se素向籽粒的运转。

关键词: 春小麦;硒;种肥;吸收分配

Abstract: Using the spring wheat variety Ningchun 4,the effects of selenium (Se) fertilizer as seed manure on Se absorption and distribution,and the influence of Se amount and fertilization method on the content of Se in grain were investigated in field experiments in Tumochuan plain.The results showed that the Se content in grain was increased from 0.103 to 0.218 mg/kg with increase in Se fertilizer rate from 75 to 300 kg/hm^2 (34.29-136.89 g Se/hm^2).The Se content in grain did not differ between the two fertilization methods.The Se content of the whole plant ranged from 0.093-0.514 mg/kg with application 150 g/hm^2 of Se fertilizer as seeding-fertilizer.The average seedling Se content was 0.219 mg/kg and could be improved by 2.6 times.The Se content in different organs of seedlings declined in the order leaf > seed > husks > stem.At the ripening stage,the order of Se content in different organs was stem > seed > husks > leaf.The quantity of uptake of Se by spring wheat in the whole plant changed as a s curve.it was fitted by the logistic equation to Se fertilizer treatment.The fastest absorption velocity was 0.017 μg/(d·plant) and was increased by 325% compared with the check treatment.The content of Se in leaves gradually decreased with spring wheat growth,however,the content in grain gradually increased.The Se harvest index when Se was applied as Se seed manure was 42.0% at the mature stage,which was increased by 0.43 % above the control.

Key words: Spring wheat;Selenium;Seed manure;Absorption and distribution

中图分类号:

S512

赵利梅;孙文静;高炳德. 种施硒肥对春小麦富硒效应及硒素分配的影响[J]. 北方农业学报, 2019, 47(2): 52-58.

ZHAO Limei;SUN Wenjing;GAO Bingde(College of Pharmacutical Science,Zhejiang Chinese Medical University,Hangzhou 311402,China;Inner Mongolia Environmental Monitoring Center Station,Hohhot 010011,China;College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010019,China). Influence of selenium fertilizer as seed manure on selenium absorption and distribution in spring wheat[J]. Journal of Northern Agriculture, 2019, 47(2): 52-58.

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种施硒肥对春小麦富硒效应及硒素分配的影响

Influence of selenium fertilizer as seed manure on selenium absorption and distribution in spring wheat

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