[1]马丹丹,姚伟伟.盐胁迫下生物质炭和腐殖酸通过改善光合作用和激素代谢促进绣球生长[J].江苏农业科学,2026,54(6):188-196.
 Ma Dandan,et al.Biochar and humic acid promote growth of Hydrangea macrophylla by improving photosynthesis and hormone metabolism under salt stress[J].Jiangsu Agricultural Sciences,2026,54(6):188-196.
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盐胁迫下生物质炭和腐殖酸通过改善光合作用和激素代谢促进绣球生长()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第54卷
期数:
2026年第6期
页码:
188-196
栏目:
盐碱胁迫调控
出版日期:
2026-03-20

文章信息/Info

Title:
Biochar and humic acid promote growth of Hydrangea macrophylla by improving photosynthesis and hormone metabolism under salt stress
作者:
马丹丹1; 姚伟伟2
1.河南林业职业学院,河南洛阳 471000; 2.中国农业科学院作物科学研究所,北京 100081
Author(s):
Ma Dandan; et al
关键词:
生物质炭; 腐殖酸; 盐胁迫; 绣球; 激素代谢; SPAD值; 氧化酶
Keywords:
-
分类号:
S685.990.4
DOI:
-
文献标志码:
A
摘要:
以无尽夏绣球(Hydrangea macrophylla Endless Summer)为试材,探究不同盐浓度(0、250 mmol/L)胁迫下土壤无添加(CK)、添加2%生物质炭(BC)处理、添加0.6%腐殖酸(HA)处理及混合添加1%生物质炭和0.3%腐殖酸[(BC+HA)/2]处理对绣球生物量分配、光合作用、叶绿素荧光参数、氧化酶活性及激素代谢的影响,以探明两者在盐胁迫下促进绣球生长的机制。结果表明,盐胁迫下绣球细胞脂质过氧化严重,光合作用受抑制,诱导氧化应激反应,激素代谢紊乱,最终抑制绣球株高、叶面积和生物量。土壤中添加BC或HA以及二者混合添加均可提高绣球盐胁迫下的SPAD值和叶绿素荧光参数,与CK相比,(BC+HA)/2处理的SPAD值、PSⅡ最大光化学效率(Fv/Fm)、光化学猝灭系数(qP)分别显著增加29.6%、5.3%、20.8%(P<0.05),非光化学猝灭系数(NPQ)显著下降22.1%;(BC+HA)/2处理的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)较CK分别显著增加52.9%、42.2%和35.8%,胞间CO2浓度(Ci)显著下降27.5%。此外,盐胁迫下添加BC+HA还能够增强抗坏血酸过氧化物酶(APX)、超氧化物岐化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性,降低细胞相对渗漏率和丙二醛含量,增加生长素(IAA)和油菜素内酯(BR)含量,降低逆境防御激素脱落酸(ABA)、茉莉酸(JA)、水杨酸(SA)和多胺(PA)含量。其中,(BC+HA)/2处理的APX、POD、CAT和SOD活性较CK显著增加32.2%、44.9%、34.1%和29.2%,IAA、BR含量较CK分别显著增加17.4%、43.0%,ABA、JA、PA、SA含量较CK显著下降17.2%、32.6%、17.5%、19.1%。主成分分析和聚类分析显示,(BC+HA)/2混合处理介导的激素相互作用激活了抗氧化酶的防御系统,重建了渗透平衡,保护了光合功能,从而改善了盐胁迫对绣球的生长抑制,且效果优于单一添加BC或HA处理。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2025-11-27
基金项目:国家自然科学基金(编号:32001395);河南省高等教育教学改革研究与实践重大项目(编号:2024SJGLX0640)。
作者简介:马丹丹(1983—),女,河南偃师人,硕士,副教授,主要从事园林植物与观赏园艺研究。E-mail:zhuyu164971@163.com。
更新日期/Last Update: 2026-03-20