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应用生态学报 ›› 2000, Vol. ›› Issue (5): 731-734.

• 研究论文 • 上一篇    下一篇

叶片淋洗对NaCl胁迫下玉米生长和矿质营养的影响

夏阳1, 胡恒觉2, 林杉3, 张福锁3, 陶洪斌3   

  1. 1. 山东省林业科学研究所, 济南250014;
    2. 甘肃农业大学园艺系, 兰州730070;
    3. 中国农业大学植物营养系, 北京100094
  • 收稿日期:1998-11-08 修回日期:1998-12-28 出版日期:2000-09-25
  • 通讯作者: 夏阳,1964年生,副教授,在职博士,主要从事农业生态及作物栽培学研究,发表论文10多篇
  • 基金资助:
    国家自然科学基金资助项目(3967034)

Effect of foliar leaching on growth and mineral nutrition of maize under NaCl stress

XIA Yang1, HU Hengjue2, LIN Shan3, ZHANG Fusuo3, Tao Hongbin3   

  1. 1. Institute of Forest Science, Shandong Province, Jinan 250014;
    3. China Agricultural Universiyt, Beijing 100094
  • Received:1998-11-08 Revised:1998-12-28 Online:2000-09-25

摘要: 研究了叶片淋洗对NaCl胁迫下玉米生长和体内矿质营养含量的影响.结果表明,无盐或低盐浓度下(0、50mmol·L-1),淋洗处理与对照的生物量没有差异,高盐浓度下(100、200mmol·L-1),淋洗处理的生物量提高,pH3.5淋洗液的淋洗效果好于pH7.0.无盐胁迫时,淋洗处理的茎叶K含量高于对照,200mmol·L-1盐胁迫时则低于对照;在高盐胁迫时,淋洗处理的茎叶Na含量低于对照;无盐胁迫时,淋洗处理茎叶中Ca、Mg含量高于对照.根系K、Na、Ca、Mg含量以及植株相对水分含量在淋洗和对照之间基本无明显差别,说明淋洗可以减轻中高度盐胁迫下玉米植株的受害程度,其原因与淋洗降低茎叶中Na含量有关.

Abstract: The impact of foliar leaching on growth and mineral nutrition maize under NaCl stress was investigated.The results showed that there was no difference in biomass between leaching and control treatments under low NaCl stress (0 and 50 mmol稬-1),but under high NaCl stress (100 and 200 mmol稬-1),the biomass of leaching treatment was higher,with a better at pH 3.5 than at pH 7.0.The shoot K+ content in leaching treatments was higher than that of control under no NaCl stress,but lower under 200mmol稬-1 NaCl stress.Shoot Na+ content of leaching treatments was lower than that of control under high NaCl stress,and shoot Ca2+ and Mg2+ contents of leaching treatments were higher under no NaCl stress.Root K+, Na+, Ca2+ and Mg2+ content and relative water content of leaching treatments had no significant changes, compared with those of control.It was suggested that foliar leaching could alleviate harmful degree of maize under serious salt stress,which was related with the decrease of shoot Na+ content by foliar leaching.