添加阳离子对美人蕉生长和氮素积累的影响。

Q3 Health Professions
Manutsawan Manokieng, A. Jampeetong
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引用次数: 0

摘要

摘要:对补充阳离子对美人蕉生长、氮和矿物质积累的影响进行了评估。在Hoagland和Arnon(1950)改良的营养液上生长了类似大小的45天龄植物。添加不同的阳离子以产生6个处理(n=4):(i)对照(未添加阳离子),(ii)2.5 mM K+,(iii)2.5 mM Ca2+,(iv)75 mM Na+,(v)1.25 mM K++1.25 mM Ca2+和(vi)2.5 mMCa2++75 mM Na+。在温室里进行了为期49天的实验。研究发现,补充K+和K++Ca2+可提高植物生长和总生物量。在接受补充K+的植物中发现最高的SER。相反,在Na+或Na++Ca2+补充的植物中,SERs、叶面积和总生物量降低。在补充K+和K++Ca2+的植物中,NO3-的累积浓度(在整个植物水平上)也最高。补充K+、Ca2+和K++Ca2+的植物的总氮积累高于对照植物。结果表明,补充阳离子特别是K+能促进籼稻植株生长和氮素积累。因此,在人工湿地中,阳离子补充可能是刺激植物生长和提高硝酸盐去除率的一种替代技术。关键词:人工湿地,硝酸盐去除,钾,热带湿地植物
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Supplemental Cations on Growth and Nitrogen Accumulation in Canna indica L.
Abstract The effects of supplemental cations on growth, nitrogen, and mineral accumulation were assessed in Canna indica L. Similar sized 45 days-old plants were grown on a nutrient solution modified from Hoagland and Arnon (1950). The different cations were added to generate 6 treatments (n=4): (i) control (no cation added), (ii) 2.5 mM K+, (iii) 2.5 mM Ca2+, (iv) 75 mM Na+, (v) 1.25 mM K+ + 1.25 mM Ca2+ and (vi) 2.5 mM Ca2+ + 75 mM Na+, respectively. An experiment was carried out in the greenhouse for 49 days. The study found that supplemental K+ and K++ Ca2+ increased plant growth and total biomass. The highest SER was found in plants receiving supplemental K+. In contrast, SERs, leaf areas, and total biomass decreased in Na+ or Na++Ca2+ supplemented plants. The accumulated NO3- concentration (at the whole plant level) was also highest in the plants with supplemental K+ and K++Ca2+. The total nitrogen accumulation was higher in the K+, Ca2+, and K++Ca2+ supplemented plants than in the control plants. The results suggest that supplemental cations particularly K+ can enhance plant growth and nitrogen accumulation in C. indica. Therefore, cation supplementation could be an alternative technique to stimulate plant growth and improve nitrate removal in constructed wetlands. Keywords: Constructed wetland, Nitrate removal, Potassium, Tropical wetland plants
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来源期刊
Chiang Mai University journal of natural sciences
Chiang Mai University journal of natural sciences Health Professions-Health Professions (miscellaneous)
CiteScore
1.70
自引率
0.00%
发文量
67
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