天津农学院学报 ›› 2017, Vol. 24 ›› Issue (3): 37-42.

• 研究与简报 • 上一篇    下一篇

盐胁迫玉米土壤中无机磷组分变化规律的研究

田佳源, 李佳霓, 田秀平通信作者   

  1. 天津农学院 农学与资源环境学院,天津 300384
  • 收稿日期:2016-12-05 出版日期:2017-09-30 发布日期:2019-10-15
  • 通讯作者: 田秀平(1965-),女,山东泰安人,教授,博士,主要从事土壤和植物营养的教学与科研工作。E-mail:tian5918@sohu.com。
  • 作者简介:田佳源(1992- ),女,黑龙江哈尔滨人,硕士在读,主要从事作物生长环境方面的研究。E-mail:tianjiayuan92@163.com。
  • 基金资助:
    天津市科技攻关项目“饲用高油玉米相关性状的遗传研究及新品种选育”(06YFGZNC01200); 天津市农业科技成果转化与推广项目“中单系列玉米杂交种栽培示范”(201204070)

Studies on Variation of Inorganic Phosphorus Components in Maize Soil under Salt Stress

TIAN Jia-yuan, LI Jia-ni, TIAN Xiu-pingCorresponding Author   

  1. College of Agronomy and Resource Environment, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2016-12-05 Online:2017-09-30 Published:2019-10-15

摘要: 在田间盐池内设置5个盐浓度水平,种植两个玉米品种,研究了盐胁迫下玉米不同生长期土壤中无机磷组分变化规律,探讨各组分磷在玉米根际与非根际土壤中的含量差别、各组分磷的有效性及与玉米吸磷量的关系。结果表明:供试土壤无机磷各组分含量顺序是:Ca10-P>Ca8-P>Fe-P>Al-P>Ca2-P>O-P;无盐处理土壤中,Ca2-P含量在整个玉米生长期都保持很高水平,而所有盐胁迫处理土壤中,Ca2-P含量均随着玉米生长而下降,且降幅显著。在盐胁迫处理下,土壤中Ca8-P与O-P的含量在玉米生长的各个时期均显著低于非胁迫土壤,Al-P与Fe-P的含量均极显著低于非胁迫土壤;玉米根际土壤中Ca2-P、Ca8-P、Al-P、Fe-P含量高于其在非根际土壤中的含量,O-P含量低于其在非根际土壤中的含量,盐胁迫下玉米土壤中Ca10-P含量在两个玉米品种间差异较大。盐胁迫下,玉米在整个生长过程中对Ca2-P与Ca8-P的吸收利用随玉米生长阶段的推进而逐渐增强。无机磷各组分中能被植物吸收利用的主要是Ca2-P、Ca8-P、Al-P和Fe-P。

关键词: 盐胁迫, 玉米, 无机磷组分, 根际

Abstract: :To set five salt concentration levels in salt ponds, planted two kinds of maizes in the fields, studied the change rule of soil inorganic phosphorous components in different growth stages of maize under the salt stress, discussed the content of phosphorus in maize rhizosphere and non-rhizosphere soil, the effect of inorganic phosphorus fractions and the relationship between phosphorus content and phosphorus uptake. These results indicated that the order of inorganic phosphorus components were Ca10-P>Ca8-P>Fe-P>Al-P>Ca2-P>O-P, the content of Ca2-P in non-salt treatment soil was very high in the whole growth period of maize, the content of Ca2-P declined with the maize growth in all salt stress treatment, and declined significantly. The content of Ca8-P、O-P in salt stress treatment was lower than non-salt stress treatment in different periods of maize, the content of Fe-P and Al-P was lower significantly than non-salt stress treatment. The content of O-P in maize rhizosphere soil was less than non-rhizosphere soil. And the content of Ca2-P, Ca8-P, Al-P, Fe-P was higher than non-rhizosphere soil. Under the salt stress, the content of Ca10-P in maize soil was different between the 2 varieties. Throughout the whole growth stage of maize, the absorption and utilization of Ca8-P and Ca2-P were increased gradually with the plant growth under salt stress. And Ca2-P, Ca8-P, Al-P and Fe-P were mainly absorbed and utilized by plants in each component of inorganic phosphorus.

Key words: salt stress, maize, inorganic phosphorus components, rhizosphere

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