[1]李延红,付艺萍,杨梅,等.低pH值条件下钙缺乏对柑橘光合特性和矿质元素含量的影响[J].江苏农业科学,2025,53(15):174-183.
 Li Yanhong,et al.Influences of calcium deficiency on photosynthetic characteristics and mineral nutrient content of citrus under low pH conditions[J].Jiangsu Agricultural Sciences,2025,53(15):174-183.
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低pH值条件下钙缺乏对柑橘光合特性和矿质元素含量的影响()

《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:
174-183
栏目:
园艺与林学
出版日期:
2025-08-05

文章信息/Info

Title:
Influences of calcium deficiency on photosynthetic characteristics and mineral nutrient content of citrus under low pH conditions
作者:
李延红1付艺萍1杨梅12魏清江3姚锋先1周高峰1
1.赣南师范大学生命科学学院/国家脐橙工程技术研究中心,江西赣州 341000; 2.海南大学热带农林学院,海南儋州 570228; 3.江西农业大学农学院,江西南昌 330045
Author(s):
Li Yanhonget al
关键词:
柑橘钙缺乏土壤酸化矿质营养光合特性
Keywords:
-
分类号:
S666.06
DOI:
-
文献标志码:
A
摘要:
钙(Ca)是高等植物生长发育必需的矿质营养元素之一,柑橘Ca缺乏严重影响其生长发育和果实品质。为研究酸性土壤条件下,不同程度Ca缺乏对柑橘幼苗光合特性和矿质营养状况的影响,以2年生枳砧纽荷尔脐橙为试验材料,利用无土栽培法进行酸性(pH值 4.5、pH值 6.5)条件下的不同Ca水平[正常钙(NCa)、低钙(LCa)、缺钙(DCa)]处理试验。结果表明,低pH值条件下Ca缺乏对纽荷尔脐橙叶片光合色素含量和光合特性的影响显著。pH值为6.5时,DCa处理新叶的叶绿素a、叶绿素b以及总叶绿素含量较NCa处理显著降低,而在pH值为4.5时差异不显著;新叶和老叶的类胡萝卜素含量在各处理间均无显著差异。在pH值6.5条件下,与NCa处理相比,DCa处理显著降低老叶Pn,老叶Gs表现为NCa>LCa>DCa,LCa、DCa处理降低老叶Tr;但在pH值4.5条件下,老叶的各光合特性间无显著差异。新叶中,在pH值4.5条件下的NCa处理中PnGs显著低于在pH值 6.5条件下的对应处理,而两者在DCa处理中呈相反趋势;在相同pH值条件下,叶片PnGs均表现为NCa>LCa>DCa。在pH值6.5条件下,与NCa处理相比,LCa、DCa处理均显著降低纽荷尔脐橙新叶和新接穗茎中的Ca含量,而在pH值4.5条件下,LCa处理的新叶和老接穗茎以及DCa处理的新叶、老接穗茎、主根和侧根中的Ca含量均显著下降。与pH值6.5处理相比,pH值4.5处理显著降低了NCa条件下新叶、老叶和新接穗茎中Ca含量以及DCa条件下主根和侧根中的Ca含量。新叶和老叶其他矿质元素含量也受到Ca缺乏和酸性条件的影响。在较酸的pH值4.5条件下,与NCa处理相比,LCa和DCa处理显著提高了新叶的Mg含量;在pH值6.5条件下,与NCa处理相比,LCa和DCa的侧根中Fe、Mn、Zn、Cu含量均显著降低。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2024-09-16
基金项目:国家自然科学基金(编号:31960573、32160680)。
作者简介:李延红(1999—),女,山东滨州人,硕士研究生,主要从事园艺植物矿质营养生理研究。E-mail:liyanhong_208@163.com。
通信作者:周高峰,博士,副教授,主要从事园艺植物矿质营养生理与栽培研究。E-mail:zhougaofeng428@163.com。
更新日期/Last Update: 2025-08-05