| 添加无机氮磷与有机肥对土壤有机氮矿化的影响 |
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| 引用本文： | 刘晓宏,郝明德.添加无机氮磷与有机肥对土壤有机氮矿化的影响[J].中国生态农业学报,2002,10(1):54-56. |
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| 作者姓名： | 刘晓宏 郝明德 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所,兰州,730000
2. 中国科学院水利部水土保持研究所,杨陵,712100 |
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| 基金项目： | 国家重大自然科学基金项目(49890330)部分研究内容 |
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| 摘 要： | 研究分析黄土高源农家厩肥（有机肥）矿化量曲线表明，有机肥中有机氮对土壤供N能力仅在施用初期有一定效果，但其对土壤有效氮的贡献并不大。加入无机氮磷和有机肥后如除去带入的有效氮素，对土壤原有的有机氮分解无促进作用，且矿化量还有一定程度的减少。加入N、P肥后，仅粮草3年轮作处理矿化量有所增加。为＋6.3%；其科裸地、玉米连作、粮饲豆4年轮作矿化量均减少，其减幅分别为35.3%、34.8%和44.6%。加入有机肥后，除有机肥84d矿化量外，仅裸地处理矿化量有所增加（171.6%），其余处理矿化量均减少。
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| 关 键 词： | 无机氮磷 有机肥 土壤有机氮矿化 |
| 收稿时间： | 3/6/2000 12:00:00 AM |
| 修稿时间： | 2000年3月6日 |
Effects of adding chemical nitrogen and phosphorus on mineralization of soil organic nitrogen. |
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| LIU Xiao-Hong and HAO Ming-De.Effects of adding chemical nitrogen and phosphorus on mineralization of soil organic nitrogen.[J].Chinese Journal of Eco-Agriculture,2002,10(1):54-56. |
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| Authors: | LIU Xiao-Hong and HAO Ming-De |
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| Institution: | Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100 |
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| Abstract: | The mineral curves of manure on the Loess Plateau are analyzed. It is shown that there are some effects on the initial stages of application of organic-N in manure, but the effects are not too great. There is no boosted action to the decomposition of organic-N after adding chemical N, P, and manure, and also the amount of mineralization is decreased. Adding N and P,the amount of mineralization of 3-years forage rotation of crop-grass is raised +6.3%, and others reduced. Adding manure, the amount of mineralization is reduced except bareness disposal (+171.6%). |
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| Keywords: | Chemical nitrogen Manure Mineralization of soil organic-N |
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