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生态学杂志 ›› 2011, Vol. 30 ›› Issue (06): 1240-1245.

• 研究报告 • 上一篇    下一篇

硼在梨树苗不同部位的分布及与其他元素分配的关系

王纪忠1,2,陶书田1,齐开杰1,周宏胜1,张绍铃1**   

  1. 1南京农业大学园艺学院, 南京 210095;2淮阴工学院生命科学与化学工程学院, 江苏淮安 223003
  • 出版日期:2011-06-08 发布日期:2011-06-08

Boron distribution and its relationships with the allocation of other nutrient elements in different parts of pear seedlings.

WANG Ji-zhong1,2, TAO Shu-tian1, QI Kai-jie1, ZHOU Hong-sheng1, ZHANG Shao-ling1**   

  1. 1College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China;2College of Life Sciences and Engineering, Huaiyin Institute of Technology, Huaian 223003, Jiangsu, China
  • Online:2011-06-08 Published:2011-06-08

摘要: 以‘翠冠’梨树苗为试验材料,采用微波消解提取灰分结合等离子发射光谱仪测定法,研究硼(B)添加对梨不同部位B分布及对P、K、Ca、Mg、Fe、Zn、Mn和Cu 8种元素吸收分配的影响。结果表明:‘翠冠’梨不同器官B浓度大小为叶片>根系>茎,随营养液B浓度增加,‘翠冠’梨根、茎、叶B浓度呈增加的趋势,营养液B浓度越高根系B浓度增加幅度越大,不同处理间差异显著。高B处理明显影响‘翠冠’梨苗8种矿质元素在根、茎、叶中的分配。根中P、K、Mg、Zn、Mn和Cu浓度随营养液B浓度增加而提高,Ca和Fe浓度随营养液B浓度增加而降低,而转运系数均随B浓度增加而增大;茎中P、Ca、Mg、Zn、Mn和Cu浓度随营养液B浓度增加而提高,K和Fe随营养液B浓度增加而降低,P和K转运系数随B浓度增加而增大,Fe无明显变化,其他元素的转运系数随营养液B浓度增加而降低;叶中P、K、Mn和Cu浓度随营养液B浓度增加而提高,Fe和Zn则相反,而Ca和Mg则先升高后降低,除Zn与Mn外,其他元素的转运系数随营养液B浓度增加而增大。

关键词: 浮游植物, 河口生态系统, 综述

Abstract: By the methods of water culture, microwave digestion, and inductively coupled plasma (ICP), this paper studied the effects of boron (B) addition on the distribution of B in different parts of ‘Cuiguan’ pear (Pyrus pyrifolia) seedlings and its relationships with the absorption and allocation of P, K, Ca, Mg, Fe, Zn, Mn, and Cu. After treated with B, the B concentration in the seedlings was in the order of leaf > root > stem, and increased with increasing B addition. Root responded more intensively than leaf and stem. Higher B addition had significant effects on the allocation of test eight elements in the seedlings. With increasing B addition, root P, K, Mg, Zn, Mn, and Cu concentrations increased while Ca and Fe concentrations decreased, but the translocation coefficients of the eight elements all increased. The stem P, Ca, Mg, Zn, Mn, and Cu concentrations increased but K and Fe concentrations decreased with increasing B addition, the translocation coefficients of P and K increased, that of Fe had less change, while the translocation coefficients of other elements decreased. As for leaf, the P, K, Mn, and Cu concentrations increased with increasing B addition, Zn and Fe concentrations were in adverse, Ca and Mg concentrations decreased after an initial increase, and the translocation coefficients of the elements except Zn and Mn increased.

Key words: Phytoplankton, Estuarine ecosystem