草地学报

草地学报 ›› 2018, Vol. 26 ›› Issue (1): 203-209.DOI: 10.11733/j.issn.1007-0435.2018.01.025

• 研究论文 • 上一篇    下一篇

牧草对滨海盐渍土主要阳离子的影响

张涛, 张倩, 田秀平, 程丹茹   

  1. 天津农学院 天津 300384
  • 收稿日期:2017-05-22 修回日期:2018-03-23 出版日期:2018-02-15 发布日期:2018-05-25
  • 作者简介:张涛(1980-),男,河北沽源人,讲师,主要从事草地资源与管理研究,Email:zhangtaotjau@126.com
  • 基金资助:

    天津市重大科技专项“绿色团泊小城镇居住社区建设科技惠民综合示范”（13ZCZDSF02600）；中新天津生态城中新科技合作计划课题“北方垂直绿化与建筑一体化技术研究”资助

Effect of Forage Grass on Several Kinds of Cationic ions in Solonchaks

ZHANG Tao, ZHANG Qian, TIAN Xiu-ping, CHENG Dan-ru   

  1. Tianjin Agricultural University, Tianjin 300384, China
  • Received:2017-05-22 Revised:2018-03-23 Online:2018-02-15 Published:2018-05-25

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摘要：

为了研究牧草对盐渍土Na＋、K＋、Ca2＋、Mg2+离子含量的影响，本试验通过在不同盐浓度滨海盐渍土中种植紫花苜蓿（Medicago sativa Linn.）、田菁（Sesbania cannabina Poir.）、早熟禾（Poa pratensis Linn.）、结缕草（Zoysia japonica Steud.）、小冠花（Coronilla buxifolia Hance）观察阳离子变化。结果表明，五种牧草降低中度盐渍土Na+效果最佳。种植牧草前后盐渍土中水溶性K+含量变化最显著，Na+的变化与牧草吸收水溶性K+的含量呈正比，紫花苜蓿和小冠花影响最明显。种植不同牧草的土壤中水溶性Ca2+含量变化有增有减，土壤盐度适中时变化显著，而达到重度时水溶性Ca2+含量变化不大；水溶性Mg2+含量只有在重度盐渍土中降低显著且差异极大。综上所述，牧草对Ca2+、Mg2+含量变化不大，而根据水溶性Na+、K+含量的变化，种植结缕草的土壤中水溶性Na+含量降低最多且水溶性K+受盐度胁迫小，故结缕草适合在这三种盐渍土中生长。

关键词: 盐渍土, 牧草, K+, Na+, Ca2+, Mg2+

Abstract:

In order to study the effects of Herbage on the content of Na+, K+, Ca2+, and Mg2+ ions in saline soil, an experiment was carried out by planting alfalfa (Medicago sativa Linn.), Sesbania pea (Sesbania cannabina Poir.), Kentucky bluegrass (Poa pratensis L.) and zoysiagrass (Zoysia japonica ) and crown vetch (Coronilla varia L.) in saline soil with different salt concentrations. The results showed that five kinds of forage grasses had the best effect on reducing Na+ in moderately saline soil. The content difference of water-soluble K+ in the saline soil before and after planting was the most significant, and the change of Na+ was directly proportional to the content of water soluble K+ absorbed by herbage, and the most obvious effect was in alfalfa and crown vetch. The content of water-soluble Ca2+ in soil increased or decreased depending on different herbage. The change of soil salinity was significant, while the content of water-soluble Ca2+ changed little when the soil was severe saline. The content of water-soluble Mg2+ decreased significantly in severe saline soil. To sum up, the content of Ca2+ and Mg2+ changed little. According to the changes of water soluble Na+ and K+ content, the content of water-soluble Na+ in the soil of growing Zoysiagrass decreased the most and the water soluble K+ was less salt stress, so Zoysiagrass was the most suitable one for growing in the three saline soils.

Key words: Solonchaks, Forage grass, K+, Na+, Ca2+, Mg2+

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