[1]邝春议,张翔,梁智诚,等.局部根系水分胁迫和氮素形态耦合对不同品种水稻生物量及水分利用的影响[J].江苏农业科学,2025,53(15):115-123.
　Kuang Chunyi,et al.Effects of coupled partial rootzone drying and nitrogen form on biomass and water utilization of different rice cultivars[J].Jiangsu Agricultural Sciences,2025,53(15):115-123.
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局部根系水分胁迫和氮素形态耦合对不同品种水稻生物量及水分利用的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第53卷
期数:
2025年第15期
页码:
115-123
栏目:
遗传育种与耕作栽培
出版日期:
2025-08-05

文章信息/Info

Title:
Effects of coupled partial rootzone drying and nitrogen form on biomass and water utilization of different rice cultivars
作者:
邝春议1; 张翔1; 梁智诚2; 汪妮2; 陈晓远2; 3; 高志红2; 3; 朱勇勇2; 3
1.喀什大学生命与地理科学学院，新疆喀什 844000； 2.韶关学院生物与农业学院，广东韶关 512000； 3.粤北水土资源高效利用工程技术研究中心，广东韶关 512000
Author(s):
Kuang Chunyi; et al
关键词:
水稻; 根系; 水分胁迫; 氮素形态; 水分利用效率; 脱落酸
Keywords:
-
分类号:
S511.01
DOI:
-
文献标志码:
A
摘要:
为明确局部根系水分胁迫和氮素形态耦合对不同品种水稻生理生化指标及水分利用的影响，以籼稻常规品种美香占2号、籼稻两系杂交品种深两优7278、籼稻三系杂交品种泰丰优208为材料，设非水分胁迫(CK)、局部根系水分胁迫(PRD)、全根水分胁迫(PEG)3种水分条件，以及铵态氮和硝态氮比例为100 ∶0(A100/N0)、50 ∶50(A50/N50)、0 ∶100(A0/N100)3种氮素形态配比，共9个处理，研究不同水氮耦合对不同品种籼稻生物量、叶片水势、脱落酸含量、叶片水分利用效率等的影响。结果显示，籼稻A在PRD与A100/N0氮素形态耦合处理下生物量比CK提高了94.5%，籼稻B和C的生物量在PRD与A0/N100处理下分别提高了116.5%和72.6%；PRD对水稻的相对含水量无显著的不利影响，籼稻B在PRD处理下水势显著降低；籼稻A、B和C的叶片脱落酸含量在PRD与A0/N100处理下较CK分别提高了5.8%、16.8%和16.3%；PRD和氮素形态协同处理显著降低3个品种籼稻的叶片蒸腾速率和气孔导度，籼稻A、B和C的叶片水分利用效率在PRD与A50/N50处理下比CK分别提高了66.8%、70.6%和69.7%。综上，PRD和氮素形态的耦合能够提高水稻生物量和WUE，实现氮增效与节水灌溉。
Abstract:
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备注/Memo

备注/Memo:
收稿日期：2024-06-27
基金项目：广东省基础与应用基础研究基金(编号：2023A1515011736)；广东省普通高校创新团队项目(编号：2020KCXTD037)。
作者简介：邝春议(2000—)，女，广东清远人，硕士研究生，主要从事作物水分、养分关系研究。 E-mail：18200600738@163.com。
通信作者：陈晓远，博士，教授，主要从事作物水分、养分关系研究。E-mail：chenxy2@163.com。
更新日期/Last Update: 2025-08-05