| 不同形态氮素对燕麦营养生长和磷素利用的影响 |
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| 引用本文： | 樊明寿,孙亚卿,邵金旺,贾立国.不同形态氮素对燕麦营养生长和磷素利用的影响[J].作物学报,2005,31(1):114-118. |
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| 作者姓名： | 樊明寿 孙亚卿 邵金旺 贾立国 |
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| 作者单位： | 内蒙古农业大学农学院，内蒙古呼和浩特010018 |
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| 基金项目： | 教育部优秀青年教师资助计划 |
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| 摘 要： | 本试验采用溶液培养和砂基培养的方法，研究了NO3ˉ-N和NH4+-N两种不同形态氮素对燕麦营养生长、氮代谢、根际pH及磷素利用的影响。结果表明, 在NO3ˉ-N和 NH4+-N同时存在的条件下，燕麦生长明显优于单一NH4+-N或NO3ˉ-N处理，且植株生长量特别是根系生长量随着NO3ˉ-N在氮源中比例的提高而增加。燕麦吸收NO3ˉ-N 和NH4+-N对
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| 关 键 词： | 燕麦 铵态氮 硝态氮 营养生长 根际pH 磷素利用 |
| 收稿时间： | 2003-08-12 |
| 修稿时间： | 2003年8月12日 |
Influence of Nitrogen Forms on Oat Growth and Phosphorus Uptake |
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| FAN Ming-Shou,SUN Ya-Qing,SHAO Jin-Wang,JIA Li-Guo.Influence of Nitrogen Forms on Oat Growth and Phosphorus Uptake[J].Acta Agronomica Sinica,2005,31(1):114-118. |
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| Authors: | FAN Ming-Shou SUN Ya-Qing SHAO Jin-Wang JIA Li-Guo |
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| Affiliation: | College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010018，Inner Mongolia |
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| Abstract: | Solution culture and sand culture were employed to investigate the influence of NH 4-N, NO 3 --N on plant growth, nitrogen uptake, rhizosphere pH as well as phosphorus uptake in oat.Results showed that oat grew obviously better with both N forms supplies, than with either.With increase of NO 3 -/ NH 4 ratio in cultural media, oat plants growth especially roots growth was improved.Nitrogen forms also affected the oat rhizosphere acidity greatly, the rhizosphere pH value was decreased when supplied with NH 4-N, whereas increased with NO 3 --N.Phosphorus uptake by oat was not only enhanced by the decrease of rhizosphere pH when plants were supplied with NH 4-N,but also influenced by root vigor. |
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| Keywords: | Oat NH 4-N NO 3 --N Vegetative growth Rhizosphere pH Phosphorus uptake |
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