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Position: Home > Articles > Effects of Localized Supplement of Nitration and Ammonium on Lateral Root Growth of Maize Under Different pH Conditions Journal of Maize Sciences 2009,17 (1) 99-101

不同pH下局部供应硝酸盐和铵对玉米侧根生长的影响

作  者:
韩丽丽;陈范骏;吴冬梅;张福锁;米国华
单  位:
中国农业大学资源与环境学院;教育部植物—土壤重点实验室
关键词:
玉米;硝酸盐;铵;侧根;pH值
摘  要:
采用水培分根培养体系,比较了不同pH下局部供应不同形态氮素对玉米侧根生长的影响。结果表明,局部硝酸盐可以刺激侧根伸长,但不影响侧根密度,pH值5或pH值7对刺激效果没有显著影响。在两个pH值下,局部供应相同浓度的铵均未显著促进侧根伸长。说明铵不能显著刺激侧根的伸长并不是由于根际pH的变化。
译  名:
Effects of Localized Supplement of Nitration and Ammonium on Lateral Root Growth of Maize Under Different pH Conditions
作  者:
HAN Li-li,CHEN Fan-jun,WU Dong-mei,ZHANG Fu-suo,MI Guo-hua(Key Lab of Plant-Soil Interaction,MOA,College of Resources and Environmental Sciences,China Agricultural University,Beijing 100093,China)
关键词:
Maize;Nitrate;Ammonium;Lateral root;pH value
摘  要:
In the present study,the effects of localized supplement of nitration and ammonium on lateral root growth in maize between two pH(5 and 7) were compared in a hydroponic split-root system.It was shown that localized nitration stimulated significantly lateral root elongation without influencing on lateral root initiation and axial root e-longation.Adjust of pH did not affect the nitrate effect.Local ammonium treatment did not affect all the root parameter in four days at either pH 5 or pH 7.It is suggested that nitrate itself could stimulate lateral root elongation.The disability of ammonium in enhancing lateral root elongation is not due to the rhizosphere pH effect.

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