|本期目录/Table of Contents|

[1]李春红,祁静玉,王荣荣,等.滴灌春小麦根系形态特征对氮素胁迫的响应[J].江苏农业科学,2020,48(04):77-84.
 Li Chunhong,et al.Response of root morphological characteristics of spring wheat to nitrogen stress under drip irrigation[J].Jiangsu Agricultural Sciences,2020,48(04):77-84.
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滴灌春小麦根系形态特征对氮素胁迫的响应(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第48卷
期数:
2020年第04期
页码:
77-84
栏目:
遗传育种与耕作栽培
出版日期:
2020-03-25

文章信息/Info

Title:
Response of root morphological characteristics of spring wheat to nitrogen stress under drip irrigation
作者:
李春红 祁静玉 王荣荣 李彦旬 蒋桂英
石河子大学农学院,新疆石河子 832000
Author(s):
Li Chunhonget al
关键词:
春小麦滴灌根系形态特征低氮响应
Keywords:
-
分类号:
S512.107
DOI:
-
文献标志码:
A
摘要:
为探明滴灌春小麦根系形态特征对氮肥的响应及其与产量、氮肥利用间的关系,从而为滴灌春小麦高产高效栽培提供理论依据。采用大田试验,研究了5个施氮水平(纯氮0、225、250、275、300 kg/hm2)下小麦根系形态特性的差异及其与产量的关系。结果表明,滴灌春小麦根系形态指标中,根长密度、根系体积和根质量随着施氮量的增加呈现先增加后降低的趋势。新春31号以N3(275 kg/hm2)开花期根系形态特性表现最优,开花期根干质量密度为483 g/m3,根长密度为3.539 cm/cm3;新春6号以N2(250 kg/hm2)开花期根系形态特性表现最优,开花期根干质量密度为49.3 g/m3,根长密度为4.066 cm/cm3,根干质量密度、根长密度、根体积较新春31号N3(275 kg/hm2)处理分别提高了2.07%、14.89%、16.69%。根系形态特性与产量相关性研究结果表明,小麦开花期根干质量密度、根体积与产量呈显著正相关。因此,增加小麦根系对低氮的适应性、提高根系生理活性、延缓根系衰老是新疆滴灌春小麦高产高效栽培调控的重要目标。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2019-01-11
基金项目:国家自然科学基金(编号:31760346)。
作者简介:李春红(1997—),女,新疆阿克苏人,主要从事农田生态环境与作物生理生态研究。E-mail:15700986070@163.com。
通信作者:蒋桂英,博士,教授,主要从事农田生态环境与作物生理生态研究。E-mail:jgy67@126.com。
更新日期/Last Update: 2020-02-20