| 洱海北部农田土壤碳、氮状况及肥力效应 |
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| 引用本文： | 胡万里,段宗颜,鲁耀,翟丽梅,陈兴位,刘培才.洱海北部农田土壤碳、氮状况及肥力效应[J].土壤通报,2011(5):1138-1142. |
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| 作者姓名： | 胡万里 段宗颜 鲁耀 翟丽梅 陈兴位 刘培才 |
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| 作者单位： | 云南省农业科学院农业环境资源研究所;中国农业科学院农业环境资源与农业区划所; |
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| 基金项目： | 大规模农村与农田污染防治方案及技术应用(2008ZX07105-002-05)资助 |
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| 摘 要： | 在洱海北部农田采集了422个耕作层土壤(0~30 cm)样品,测试分析了土壤全氮、有效氮、有机质含量及分析其相互关系,结合多点基础地力试验结果,分析了土壤不同碳、氮含量与当季作物产量的相应关系。结果表明:洱海北部区域农田土壤全氮和有机质含量非常丰富,全氮含量主要分布于2.0~4.5 g kg-1之间,平均含量达到3.3 g kg-1,土壤氮主要为有机态氮为主;土壤有机质含量主要分布于40.0~70.0 g kg-1之间,平均含量达到56.3 g kg-1。作物相对产量与土壤全氮和有机质含量呈显著正相关,当土壤全氮含量达到3.0 g kg-1或有机质含量达到56.0 g kg-1以上时,不施氮条件下,水稻作物产量可以达到稳产。
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| 关 键 词： | 洱海 土壤氮 土壤碳 相对作物产量 |
The Distribution of Farmlands Soil Nitrogen and Carbon and Crop Yield Relationship in Northern of ErHai Lake |
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| HU Wan-li ,DUAN Zong-yan ,LU Yao ,ZHAI Li-mei ,CHEN Xing-wei ,LIU Pei-cai.The Distribution of Farmlands Soil Nitrogen and Carbon and Crop Yield Relationship in Northern of ErHai Lake[J].Chinese Journal of Soil Science,2011(5):1138-1142. |
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| Authors: | HU Wan-li DUAN Zong-yan LU Yao ZHAI Li-mei CHEN Xing-wei LIU Pei-cai |
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| Institution: | HU Wan-li 1,DUAN Zong-yan 1,LU Yao 1,ZHAI Li-mei 2,CHEN Xing-wei 1,LIU Pei-cai 2 (1.Agricultural Resources & Environment Institute,YunNan Academy of Agricultural Sciences,Kunming 6502052,China,2.The Institute of Agricultural Resources and Regional Panning,Chinese Academy of Agricultural Sciences,Beijing 10081,China) |
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| Abstract: | In the farmlands north to the ErHai Lake,422 plow layer soil samples(0-30 cm) were collected to test soil total nitrogen,available nitrogen and organic matter content and analyze the relationship between them.At the same time,combined with more basic fertility fields experiment results,the response relationships between different soil carbon and nitrogen content and seasonal crop yield was researched.The results showed that the total nitrogen and organic matter of field soil were very abundant in the farmla... |
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| Keywords: | The ErHai Lake Soil nitrogen Soil carbon Crop relative yield |
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