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Position: Home > Articles > Effects of Nitrate-N and Ammonium-N on Growth of Lillium‘Siberia’ Journal of Anhui Agricultural Sciences 2013 (14) 6125-6126,6145

硝态氮与铵态氮对西伯利亚百合生长的影响

作  者:
唐文菊;赵庆芳
单  位:
西北师范大学生命科学学院
关键词:
西伯利亚百合;硝态氮;铵态氮
摘  要:
[目的]研究不同氮素形态对西伯利亚百合生长的影响。[方法]用营养液培养法,先对健康植株进行缺氮培养,再提供NO3--N与NH4+-N2种不同形态的氮肥,待生长稳定后测定相关生理指标。[结果]不同形态的N对植物各项生理指标的影响不同。NO3--N对硝酸还原酶活性有促进作用,其活性除在最高施用水平50 mmol/L受到抑制外,随着施用水平的升高而增强;NH4+-N对硝酸还原酶活性有一定的抑制作用。NO3--N处理百合叶片中的可溶性糖含量、可溶性蛋白含量、淀粉酶活性普遍高于NH4+-N处理,但NH4+-N处理百合叶片中还原性糖含量普遍高于用NO3--N处理。[结论]硝态氮是西伯利亚百合生长较好的氮素形态。
译  名:
Effects of Nitrate-N and Ammonium-N on Growth of Lillium‘Siberia’
作  者:
TANG Wen-ju et al ( College of Life Science,Northwest Normal University,Lanzhou,Gansu 730070)
关键词:
Lillium‘Siberia’;Nitrate-N;Ammonium-N
摘  要:
[Objective]The research aimed to make clear the effects of two major inorganic nitrogen forms on the growth of Lillium‘Siberia’.[Method]Healthy plants were cultivated without nitrogen under hydroponic condition.After obvious symptoms appeared,the changes of physiological indicators were determined with NO3--N or NH4 +-N nutrition.[Result]The effects of N form on plant physiological indicators were different due to the different N forms.In general,nitrate-N accelerated the nitrate reductase(NR) activity while ammonium-N inhibited it.NR activity increased with the increase of nitrate-N level,except the highest nitrogen level 50 mmol / L.Further analysis indicated that,compared with ammonium-N nutrition,nitrate-N nutrition significantly increased the content of soluble sugar,soluble protein and the amylase activity.However,the result was just the opposite in reducing sugar.[Conclusion]Nitrate-N was the best nitrogen fertilizer for Lillium‘Siberia’.

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