[1]姜妍,王清泉,李远明,等.施氮水平对7S亚基缺失大豆根系形态和结瘤固氮的影响[J].大豆科学,2017,36(02):267-274.[doi:1.11861/j.issn.1000-9841.2017.02.0267]
　JIANG Yan,WANG Qingquan,LI Yuanming,et al.Effect of Different Nitrogen Application Levels on the Root Morphology, Nodulation and Nitrogen Fixation in 7S Subunit Lacked Soybean[J].Soybean Science,2017,36(02):267-274.[doi:1.11861/j.issn.1000-9841.2017.02.0267]
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施氮水平对7S亚基缺失大豆根系形态和结瘤固氮的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第36卷 期数: 2017年02期 页码: 267-274 栏目: 出版日期: 2017-03-20
Title:
Effect of Different Nitrogen Application Levels on the Root Morphology, Nodulation and Nitrogen Fixation in 7S Subunit Lacked Soybean
作者:
姜妍1; 2;  王清泉3;  李远明1; 2;  王绍东1; 2;  刘伟1; 2
1黑龙江省绿色食品科学研究院，黑龙江 哈尔滨 150028；?
2东北农业大学 农学院，黑龙江 哈尔滨 150030；?
3黑龙江省森工总局 多种经营局，黑龙江 哈尔滨 150003
Author(s):
JIANG Yan1; 2; WANG Qingquan3; LI Yuanming1; 2; WANG Shaodong1; 2; LIU Wei1; 2
1Heilongjiang Academy of Green Food Science，Harbin 150028, China;
2College of Agriculture, Northeast Agricultural University，Harbin 150030,China;
3.Diversification Bureau, Heilongjiang Forest Industry Office, Harbin 150003, China
关键词:
7S亚基缺失大豆; 根系形态; 固氮酶活性; 氮水平
Keywords:
7S subunit lacked soybean;  Root morphology;  Nitrogenase activity;  Nitrogen level
DOI:
1.11861/j.issn.1000-9841.2017.02.0267
文献标志码:
A
摘要:
为有效推广功能型大豆7S亚基缺失品种，以7S亚基缺失大豆品系东富2号为研究对象，设置4种施氮水平（纯N），N0(0 mg?kg-1)、N1(25 mg?kg-1)、N2(50 mg?kg-1)、N3（75 mg?kg-1），采用桶栽法研究大豆根系形态和结瘤固氮对不同施氮水平的响应。结果表明：N1(25 mg?kg-1)水平下根系干重加大，根冠比增大，根瘤固氮潜力高，单株产量较高。N2(50 mg?kg-1)水平下根长、根表面积、根体积在生育后期增长较快，根系干重较大，根冠比低，固氮酶活性最高，单株籽粒产量最高。N3（75 mg?kg-1）水平下植株干重较大，无效生长较多，根瘤数少，固氮潜力和根冠比低，单株产量不高。综合籽粒产量和根系特性指标，功能型大豆7S亚基缺失品系东富2号的适宜施肥量为25～50 mg?kg-1。
Abstract:
In order to popularize 7S subunit lacked soybean effectively, the experiment was conducted with 4 nitrogen levels (pure N )inculding N0 (0 mg?kg-1), N1 (25 mg?kg-1), N2 (50 mg?kg-1) and N3 (75 mgkg-1) with Dongfu 2(7S subunit lacked soybean line)The response of soybean root morphology, nodulation and nitrogen fixation to different nitrogen application levels were studied with pot cultivation The results showed that under N1(25 mg?kg-1) level root dry weight and root to shoot ratio increased, root nodule nitrogen fixation potential and yield per plant were higher than others Under N2 (50 mg?kg -1) level root length, root surface area, root volume were larger than the other treatments in the late growth stage, root dry weight was biggest, root to shoot ratio was lower, nitrogenase activity and seed yield per plant were highestnUnder N3(75 mg?kg-1) level plant dry weight was higher, but plant invalid growth was occurrednNodule number, nitrogen fixation potential, root to shoot ratio and yield were lowernTaking into account of seed yield and root characteristics, appropriate N fertilizer amount of 7S subunit lacked soybean was 25-50 mg?kg-1

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备注/Memo

基金项目：国家科技支撑计划（2014BAD11B01）；黑龙江省财政资助项目。

第一作者简介： 姜妍（1979-），女，博士，副研究员，主要从事大豆栽培生理与品质特性研究。E-mail:yanjiang416@163.com。

更新日期/Last Update: 2017-05-14