土壤氮、盐浓度对盐角草（Salicornia europaea）生长发育及氮素吸收的影响

doi:10.7522/j.issn.1000-694X.2013.00440

摘要/Abstract

摘要： 以盐生植物盐角草（Salicornia europaea）为材料，以NaCl模拟不同盐度环境，盆栽试验了氮（0.3 g·kg^-1，N₁；0.6 g·kg^-1，N₂；1.2 g·kg^-1，N₃；2.4 g·kg^-1，N₄），盐（2.5 g·kg^-1，S₁；5.0 g·kg^-1，S₂；7.5 g·kg^-1，S₃）处理对其生长发育及氮素吸收利用的影响。结果表明：（1）不同盐度下施氮均可以显著促进盐角草的生长，地上部干质量均在N₂处理下达到最大，而株高均在N₁时达到最高，且施氮对盐角草生长的影响与盐度有关；（2）不同盐度环境下施氮所能达到的最高干物质产量及最高施氮限量不同，表现为S₃12，随着施氮量的增加，氮素生产力与氮素农学利用效率均表现出下降的趋势；（3）施氮显著增加了盐角草各器官含氮量及氮吸收量，同一施氮水平下盐角草各器官含氮量及氮吸收量均表现为同化枝>茎>根；（4）同一施氮水平下，随着盐度的增加，盐角草同化枝渗透势显著下降，同一盐度环境下，随着施氮量的增加，同化枝渗透势呈现出下降趋势，渗透调节能力增大；（5）3个盐度环境下，施氮均增加盐角草同化枝光合色素含量，从而提高光合效率，增强其对盐渍环境的适应能力。

关键词: 氮, 盐角草（Salicornia europaea）, 生长发育, 渗透势

Abstract: Effects of nitrogen concentration (0.3 g·kg^-1,N₁;0.6 g·kg^-1,N₂;1.2 g·kg^-1,N₃;2.4 g·kg^-1,N₄) and salinity (2.5 g·kg^-1,S₁;5.0 g·kg^-1,S₂;7.5 g·kg^-1,S₃) on growth, nitrogen uptake and utilization of Salicornia europaea were studied by experiment of potted plant. The results showed that: (1) Application of nitrogen could promote the growth of S. europaea, the dry weight reached the maximum when nitrogen application was N₂ and plant height reached the maximum when nitrogen application was N₁, and effect of nitrogen application on growth of S. europaea seedlings was related the salinity; (2) The highest nitrogen application rate and the most dry matter achieved by nitrogen application was difference in different salinity, it showed that S₃12, nitrogen productivity and nitrogen use efficiency decreased with the increase of nitrogen application; (3) Nitogen application significantly promoted the increase of nitrogen content and nitrogen uptake of S. europaea organs, and nitrogen content and nitrogen uptake of S. europaea organs showed that shoot>stem>root at a same nitrogen level; (4) Assimilating branches osmotic potential of S. europaea decreased with increasing salinity in the same nitrogen level, and assimilating branches osmotic potential of S. europaea decreased with increasing nitrogen application in the same salinity and the osmotic adjustment ability increased; (5) Application of nitrogen could increase photosynthetic pigments content of S. europaea assimilating branches and improve photosynthetic efficiency, and strength the adaptability to salt environment.

Key words: nitogen, Salicornia europaea, growth and development, osmotic pressure

中图分类号:

Q945.79

尹海龙, 田长彦, 任婧, 陈春秀, 黄建. 土壤氮、盐浓度对盐角草（Salicornia europaea）生长发育及氮素吸收的影响[J]. 中国沙漠, 2014, 34(5): 1277-1284.

Yin Hailong, Tian Changyan, Ren Qian, Chen Chunxiu, Huang Jian. Effects of Soil Nitrogen and Salt Concentration on Growth and Nitrogen Uptake of Salicornia europaea[J]. JOURNAL OF DESERT RESEARCH, 2014, 34(5): 1277-1284.

参考文献

[1] 洪平,徐凯,刘亚欣.抗旱耐盐基因与作物的改良及其在荒漠化治理中的前景[J].中国农学通报,2008,24(4):398-402.
[2] Mokded R,Siwar F,Jihene J,et al.Phytodesalination of a salt-affected soil with the halophyte Sesuvium portulacastrum L to arrange in advance the requirements for the successful growth of a glycophytic crop[J].Bioresource Technology,2010,101:6822-6828.
[3] Chen T H H,Murata N.Glycinebetaine protects plants against abiotic stress:mechanisms and biotechnological applications [J].Plant,Cell and Environment,2011,34:1-20.
[4] Loveland D G,Ungar I A.The effect of nitrogen fertilization on the production of halophytes in an inland salt marsh [J].American Midland Aaturalist,1983,106:139.
[5] Rake D R,Ungar I A.Effects of salinity,nitrogen,and population density on the survival,growth,and reproduction of Atriplex triangularis (chenopodiaceae)[J].American Journal of Botany,1989,76:1125.
[6] Rozema J,Dueck T,Wesselman H,et al.Nitrogen dependent growth stimulation by salt in strandline species[J].Acta Oecologica,1983,4:41.
[7] Smart R M,Barko J W.Nitrogen nutrition and salinity tolerance of Distichlis spicata and Spartina alterniflora[J].Ecology,1980,61:630.
[8] Govin J D,Zedler J B.Nitrogen effects on Spartina folilsa and Salicornia virainica in the salt marsh at Tijuana estuary,California[J].Wetlands,1987,107:317.
[9] 赵可夫,李法曾.中国盐生植物[M].北京:科学出版社,1999.
[10] 赵振勇,张科,王雷,等.盐生植物对重盐渍土脱盐效果[J].中国沙漠,2013,33(5):1420-1425.
[11] 王界平,田长彦.氮肥对盐角草生长及矿质灰分累积的影响[J].干旱地区农业研究,2011,29(1):102-107.
[12] 张梅如,马金彪,姚银安,等.盐角草(Salicornia europaea)对NaCl处理的生理响应[J].中国沙漠,2013,33(5):1420-1425.
[13] 赵惠明.盐生植物盐角草的资源特点及开发利用[J].科技通报,2004,20(2):167-171.
[14] 张科,张道远,王雷,等.自然生境下盐角草的生物学特征及其影响因子[J].干旱区地理,2007,30(6):832-838.
[15] Kudo N,Fujiyama H.Responses of halophyte Salicornia bigelovii to different forms of nitrogen source [J].Pedosphere,2010,20:311-317.
[16] 原俊凤,田长彦,冯固,等.硝态氮对盐胁迫下囊果碱蓬幼苗根系生长和耐盐性的影响[J].植物营养与肥料学报,2009,15(4):953-959.
[17] 乔木,田长彦,王新平.新疆灌区土壤盐渍化及改良治理模式[M].乌鲁木齐:新疆科学技术出版社,2008.
[18] 郝建军,康宗利,于洋.植物生理学实验技术[M].北京:化学化工出版社,2006.
[19] 邹琦.植物生理学实验指导[M].北京:中国农业出版社,2005.
[20] 董鸣,王义凤,孔繁志,等.陆地生物群落调查观测与分析[M].北京:中国标准出版社,1996.
[21] 陆景陵,胡霭堂.植物营养学[M].北京:高等教育出版社,2006.
[22] 李文军,夏永秋,杨晓云,等.施氮和肥料添加剂对水稻产量、氮素吸收转运及利用的影响[J].应用生态学报,2011,22(9):2331-2336.
[23] 原俊凤,田长彦,冯固,等.硝态氮对盐胁迫下囊果碱蓬幼苗根系生长和耐盐性的影响[J].植物营养与肥料学报,2009,15(4):953-959.
[24] 王界平,田长彦.不同氮磷水平下盐角草生长及盐分累积特征分析[J].草业学报,2011,20(2):234-243.
[25] 段德玉,刘小京,李存桢,等.N素营养对NaCl胁迫下盐地碱蓬幼苗生长及渗透调节物质变化的影响[J].草业学报,2005,14(1):63-68.
[26] 郭晓丽.盐胁迫下不同小麦品种的渗透势研究[J].安徽农业科学,2008,36(20):8443-8487.
[27] 刘志媛,朱祝军,钱亚榕,等.等渗Ca(NO3)2和NaCl对番茄幼苗生长的影响[J].园艺学报,2001,28(1):31-35.
[28] 阮成江,谢庆良.盐胁迫下沙棘的渗透调节效应[J].植物资源与环境学报,2002,11(2):45-47.
[29] 赵峥,龚苏,段承俐,等.氮、磷、钾对灯盏花生长发育及光合色素含量的影响[J].草业学报,2005,20(5):676-689.