Acta Agrestia Sinica ›› 2014, Vol. 22 ›› Issue (6): 1318-1323.DOI: 10.11733/j.issn.1007-0435.2014.06.026

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Effects of Different NPK Fertilizer Rates on the Ion Absorption and Distribution of Reed Canarygrass(Phalaris arundinacea) Under Salt Stress

ZHANG Yong-liang1, WANG Xue-yuan1, LIU Yang1, CHENG Ming2   

  1. 1. Department of Agronomy, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028042, China;
    2. Grassland Management Station of Kezuohou county, Ganqika, Inner Mongolia 028100, China
  • Received:2014-02-24 Revised:2014-05-30 Online:2014-12-15 Published:2014-12-01

盐胁迫下氮磷钾肥对虉草离子吸收与分布的影响

张永亮1, 王学愿1, 刘杨1, 程铭2   

  1. 1. 内蒙古民族大学农学院, 内蒙古 通辽 028042;
    2. 内蒙古科左后旗草原工作站, 内蒙古 甘旗卡 028100
  • 作者简介:张永亮(1959-),男,内蒙古包头人,博士,教授,主要从事牧草栽培与生态研究,E-mail: zyl8802@163.com
  • 基金资助:

    内蒙古科技厅应用技术研发项目(20120426);内蒙古民族大学科研创新团队建设计划项目(NMD10-03);通辽市与内蒙古民族大学科技合作项目(SXYB2012077)资助

Abstract:

The ion absorption and distribution of reed canarygrass under salt stress(300 mmol·L-1 NaCl) were studied using pot sand culture experiment under a rain shelter for understanding the changes of K+, Na+, Mg2+, Ca2+ and Cl- contents and the correlations between ion contents and different NPK levels. The results showed that the contents of K+, Mg2+ and Ca2+ increased and the contents of Na+ and Cl- decreased in reed canarygrass seedling under salinity stress. The ratios of K+/Na+, Mg2+/Na+ and Ca2+/Na+ increased with the increase of NPK fertilizer level. The Na+ content of reed canarygrass was a significant negative correlation with NPK level, whereas the K+ and Mg2+ content of reed canarygrass was a significant positive correlation with NPK level (P<0.05). Nitrogen fertilizer had the most significant effect on the K+, Na+, Mg2+, Ca2+ and Cl- contents of reed canarygrass compared with others. Potassium fertilizer had more effect on the Cl- and Mg2+contents of reed canarygrass,whereas phosphate fertilizer had more effect on the Ca2+ and Mg2+contents of reed canarygrass than others.

Key words: Reed canarygrass, NPK fertilizer, Salt stress, Ion absorption

摘要:

以通草1号虉草(Phalaris arundinacea ‘Tongcao No.1’)为试验材料,采用盐胁迫(300 mmol·L-1 NaCl)与不同氮磷钾肥配施处理的沙土盆栽试验方法,分析盐胁迫下氮磷钾肥对虉草K+, Na+, Mg2+, Ca2+ 和Cl-吸收与分布的影响,并探讨氮磷钾肥水平与离子含量间的相关性.结果表明:随着氮、磷、钾肥水平增加,虉草体内 K+, Mg2+和Ca2+含量升高,而Na+和Cl-含量下降,同时K+/Na+, Mg2+/Na+和Ca2+/Na+比值升高.氮磷钾肥施量与虉草Na+含量间成显著负相关,与K+和Mg2+含量间成显著正相关(P<0.05).在3种肥料中,氮肥对虉草K+, Na+, Mg2+, Ca2+ 和Cl-含量的影响最明显,钾肥对Mg2+和Cl-含量影响较明显,而磷肥对Ca2+和Mg2+含量影响较明显.

关键词: 虉草, 氮磷钾肥, 盐胁迫, 离子吸收

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