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草业学报 ›› 2013, Vol. 22 ›› Issue (3): 234-.DOI: 10.11686/cyxb20130331

• 研究论文 • 上一篇    下一篇

追施氮肥对盐地碱蓬生长及其改良盐渍土效果研究

梁飞1,2,田长彦2*,田明明3,梁笛4,张科2   

  1. 1.新疆农垦科学院农田水利与土壤肥料研究所,新疆 石河子 832000;
    2.中国科学院新疆生态与地理研究所,新疆 乌鲁木齐 830011;
    3.河北省邯郸市农业局, 河北 邯郸 056000;
    4.河北省承德市农牧局土壤肥料工作站,河北 承德 067000
  • 出版日期:2013-06-20 发布日期:2013-06-20
  • 通讯作者: E-mail:tianchy@ms.xjb.ac.cn
  • 作者简介:liangfei3326@126.com
  • 基金资助:
    农业部行业专项(200903001)和国家科技支撑计划项目(2009BAC54B02)资助。

Effect of nitrogen topdressing on the growth of Suaeda salsa and the improvement of saline soil

LIANG Fei1,2, TIAN Chang-yan2, TIAN Ming-ming3, LIANG Di4, ZHANG Ke2   

  1. Effect of nitrogen topdressing on the growth of Suaeda salsa and the improvement of saline soil
    LIANG Fei1,2, TIAN Chang-yan2, TIAN Ming-ming3, LIANG Di4, ZHANG Ke2
    (1.Institute of Farmland Water Conservancy and Soil-fertilizer, Xinjiang Academy of Agricultural
    Reclamation Science, Shihhotze 832000, China; 2.Xinjiang Institute of Ecology and Geography,
    Chinese Academy of Sciences, Urumqi 830011, China; 3.Handan Municipal Agriculture
    Bureau of Hebei, Handan 056000, China; 4.Chengde City Agricultural Bureau
    of Chengde City Soil and Fertilizer Workstation, Chengde 067000, China)
  • Online:2013-06-20 Published:2013-06-20

摘要: 为了研究追施氮肥对盐地碱蓬生长及其对盐渍土改良的影响,通过田间小区试验研究了不同追施氮量(0~450 kg/hm2)对盐地碱蓬生长、离子累积以及盐渍土修复的影响。结果表明,追施氮肥能够提高盐地碱蓬茎秆、籽粒和叶片的生物量;在0~450 kg/hm2范围内,盐地碱蓬的各部分生物量均随着追施氮量呈直线增长的趋势。追施氮肥对盐地碱蓬茎秆、籽粒和叶片中的K+、Na+ 、Ca2+、Mg2+含量无显著影响,但不同器官不同离子含量之间存在较明显的差异。追施氮肥能够增加盐地碱蓬各部分对K、Na 、Ca、Mg的累积;450 kg/hm2施氮量的盐地碱蓬的各离子累积量均较不施氮显著增加。土壤表层的Na+、K+含量随着追施氮量增加而降低。总之,追施氮肥能够促进盐地碱蓬对盐渍土的生物修复,降低土壤中的Na+浓度及其危害。

Abstract: The effects of topdressing different nitrogen levels on the growth of Suaeda salsa and on the improvement of saline soil, were conducted in field experiments where growth, accumulative amounts of K+, Na+, Ca2+, and Mg2+ of S. salsa, as well as salinity concentrations in soils were assessed. The yields of grain, stem, leaf and biomass increased with N topdressing. At the rate of 450 kg/ha, the biomass of component factors in S. salsa presented a linear growth trend with the amount of N topdressing. With a further increase of nitrogen application, the concentrations of K+, Na+, Ca2+, and Mg2+ barely changed. The accumulative amounts of K+, Na+, Ca2+, and Mg2+ increased with N topdressing. The concentrations of K+ and Na+ in surface soils (0-10 cm) showed decreasing trends with N topdressing. N fertilisation could therefore stimulate S. salsa growth and strengthen the effectiveness of bioremediation of saline soil.

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