[1]赵改丽,范国强,杨倩.金叶女贞对氮素供应的生理响应与系统调控[J].江苏农业学报,2026,42(07):1471-1481.[doi:doi:10.3969/j.issn.1000-4440.2026.07.018]
 ZHAO Gaili,FAN Guoqiang,YANG Qian.Physiological responses and systemic regulation of Ligustrum×vicaryi to nitrogen supply[J].,2026,42(07):1471-1481.[doi:doi:10.3969/j.issn.1000-4440.2026.07.018]
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金叶女贞对氮素供应的生理响应与系统调控()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
42
期数:
2026年07期
页码:
1471-1481
栏目:
园艺
出版日期:
2026-07-31

文章信息/Info

Title:
Physiological responses and systemic regulation of Ligustrum×vicaryi to nitrogen supply
作者:
赵改丽1范国强2杨倩1
(1.河南农业职业学院园林工程学院,河南郑州451450;2.河南农业大学林学院,河南郑州450000)
Author(s):
ZHAO Gaili1FAN Guoqiang2YANG Qian1
(1.College of Landscape Engineering, Henan Vocational College of Agriculture, Zhengzhou 451450, China;2.College of Forestry, Henan Agricultural University, Zhengzhou 450000, China)
关键词:
金叶女贞生长参数光合作用生理生化抗氧化酶能力
Keywords:
Ligustrum×vicaryinitrogengrowth parametersphotosynthesisphysiology and biochemistryantioxidant capacity
分类号:
S687
DOI:
doi:10.3969/j.issn.1000-4440.2026.07.018
文献标志码:
A
摘要:
为探究氮素对金叶女贞(Ligustrum×vicaryi)生长的调控作用,本研究通过盆栽试验设置5个氮水平(0 kg/hm2、50 kg/hm2、100 kg/hm2、150 kg/hm2、200 kg/hm2),系统测定并分析了植株生长发育、光合生理、养分平衡、渗透调节物质、氧化胁迫水平及抗氧化系统等关键指标。结果表明,金叶女贞对氮素呈显著的剂量依赖性响应,150 kg/hm2为该树种的适宜施氮量。冗余分析(RDA)与偏最小二乘结构方程模型(PLS-SEM)揭示了氮素对金叶女贞生长的双重调控作用:在适宜施用量范围内,氮素以提升光合性能为核心路径促进植株生长;氮素过量则通过直接损害光合性能、诱发强烈氧化应激、破坏养分平衡三条负向路径的协同作用抑制生长。本研究结果为金叶女贞的精准施肥与养分管理提供了科学依据。
Abstract:
To investigate the regulatory effects of nitrogen (N) on the growth of Ligustrum×vicaryi, a pot experiment was conducted with five nitrogen levels (0 kg/hm2, 50 kg/hm2, 100 kg/hm2, 150 kg/hm2, 200 kg/hm2), and indicators of plant growth, photosynthetic physiology, nutrient balance, osmoregulatory substances, oxidative stress levels, and antioxidant systems were systematically measured. The results showed that L.×vicaryi exhibited a significant dose-dependent response to nitrogen, and 150 kg/hm2 was the optimal nitrogen application rate. Redundancy analysis (RDA) and partial least squares structural equation modeling (PLS-SEM) revealed the dual regulatory effects of nitrogen on the growth of Ligustrum×vicaryi: within the appropriate application range, nitrogen promoted plant growth through the core pathway of enhancing photosynthetic performance. In contrast, excess nitrogen suppressed growth through the synergistic action of three negative pathways: direct damage to the photosynthetic performance, induction of severe oxidative stress, and disruption of nutrient balance. The results of this study provide a scientific basis for precise fertilization and nutrient management of L.×vicaryi.

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备注/Memo

备注/Memo:
收稿日期:2025-07-03基金项目:国家自然科学基金项目(32171746);河南农业职业学院花卉生产与应用科研创新团队项目(HNACKT-2023-03);河南省高等教育教学改革研究与实践项目(2021SJGLX700);河南省职业教育教学改革研究与实践项目[豫教(2024)05819]作者简介:赵改丽(1986-),女,河南禹州人,硕士,讲师,研究方向为林学。(E-mail)gailizhao1986@hotmail.com
更新日期/Last Update: 2026-08-21