| 旱地新型土壤供氮力指标——氯仿熏蒸浸提氮 |
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| 引用本文： | 宇万太,姜子绍,马强,周桦.旱地新型土壤供氮力指标——氯仿熏蒸浸提氮[J].吉林农业大学学报,2009,31(6). |
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| 作者姓名： | 宇万太 姜子绍 马强 周桦 |
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| 作者单位： | 中国科学院沈阳应用生态研究所,沈阳,110016 |
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| 基金项目： | 中国科学院知识创新项目(KZCX2-YW-407、KZCX2-YW-405);;国家支撑计划项目(2006BAD05B05);;国家自然科学基金项目(40701067) |
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| 摘 要： | 模拟旱地条件进行盆栽试验,尝试用氯仿熏蒸-浸提法测定土壤供氮力。分析了熏蒸前后各种形态氮素含量的变化,并对黑麦草吸氮量与农田土壤熏蒸-浸提氮进行了相关性分析。结果表明:各种施肥处理以及不同土地利用方式下氯仿熏蒸-浸提氮与黑麦草吸氮量有明显的相关性,氯仿熏蒸浸提的硝态氮和有机氮与吸氮量均呈极显著相关,相关系数分别为0.938和0.942。氯仿熏蒸浸提全氮能全面可靠地反映土壤的供氮力,表明氯仿熏蒸浸提氮是一个良好的土壤供氮力指标,它可以用于估计农田土壤的供氮力。氯仿熏蒸浸提法测定土壤有效氮适于包括碱性土壤和水田土壤在内的各种类型土壤。
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| 关 键 词： | 棕壤 潮棕壤 供氮力 氯仿熏蒸浸提氮 |
A New Index for Nitrogen Supplying Capacity in Arid Land-Fumigation-Extraction with Chloroform |
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| YU Wan-tai,JIANG Zi-shao,MA Qiang,ZHOU Hua.A New Index for Nitrogen Supplying Capacity in Arid Land-Fumigation-Extraction with Chloroform[J].Journal of Jilin Agricultural University,2009,31(6). |
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| Authors: | YU Wan-tai JIANG Zi-shao MA Qiang ZHOU Hua |
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| Institution: | YU Wan-tai,JIANG Zi-shao,MA Qiang,ZHOU HuaInstitute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China |
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| Abstract: | A study has been conducted to determine nitrogen supplying capacity in simulation of arid soil by pot experiment with chloroform fumigation-extraction method. The content of ammonium nitrogen,nitration nitrogen and total nitrogen were determined to study the relationship between uptake nitrogen by ryegrass and nitrogen content of different forms.The results showed a good correlation between uptake nitrogen by ryegrass and chloroform fumigation-extraction nitrogen under different fertilizer treatments.There ... |
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| Keywords: | brown soil aquic brown soil nitrogen supplying capacity chloroform fumigation-extraction nitrogen |
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