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| 添加葡萄糖对不同肥力黑土氮素转化的影响 | |
| 引用本文： | 贾俊仙,李忠佩,车玉萍.添加葡萄糖对不同肥力黑土氮素转化的影响[J].土壤学报,2011,48(1):207-211. |
| 作者姓名： | 贾俊仙 李忠佩 车玉萍 |
| 作者单位： | 1. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;山西农业大学文理学院,山西太谷,030801;中国科学院研究生院,北京,100049 2. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;中国科学院研究生院,北京,100049 3. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 |
| 基金项目： | 国家重点基础研究发展计划（973计划） |
| 摘 要： | 氮是作物生长必需的大量营养元素,增施化学氮肥,是农业生产采取的主要增产措施之一。我国的氮肥消费量已占世界总消费量的约30%,但我国农业中氮素的生产效率趋于下降,而带来的农业环境污染则趋于加重。提高氮素利用率,降低其对环境的负面影响,在保障粮食安全的同时兼顾生 |
| 关 键 词： | 添加葡萄糖 肥力水平 黑土 氮素转化 |
| 收稿时间： | 2009/10/14 0:00:00 |
| 修稿时间： | 2009/12/18 0:00:00 |
Effects of glucose addition on nitrogen transformation in black soils different in organic carbon content |
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| Jia Junxian,Li Zhongpei and Che Yuping.Effects of glucose addition on nitrogen transformation in black soils different in organic carbon content[J].Acta Pedologica Sinica,2011,48(1):207-211. | |
| Authors: | Jia Junxian Li Zhongpei and Che Yuping |
| Institution: | Institute of Soil Science, Chinese Academy of Sciences,Institute of Soil Science, Chinese Academy of Sciences,Institute of Soil Science, Chinese Academy of Sciences |
| Abstract: | In order to understand the mechanisms of N transformation and manage N fertilization better, effect of glucose addition on N transformation was determined in black soils with different organic C contents. Changes of mineralization, nitrification and denitrification of black soils, as well as their response to glucose addition were measured by incubation experiment. Results showed that intensity of mineralization, nitrification and denitrification were: soil with high fertility > soil with low fertility. During the first week of incubation, net mineralization, nitrification ratio and denitrification rate in black soil with high fertility were 1.8, 2.2 and 1.8 times of that in soil with low fertility respectively. Addition of glucose decreased mineralization and nitrification but increased denitrification. The effects of glucose addition were significantly different in different soils. Addition of glucose decreased approx. 280.5% of net mineralization, 8.8% of nitrification ratio and increased 299.1% of dinitrification rate in soil with high fertility. However, the corresponding values in soil with low fertility were 582.8%, 50.9% and 428.4% respectively. It was suggested that the effect of glucose addition on nitrogen transformation in soil with low organic C content was significantly greater than that in soil with high organic C content. |
| Keywords: | Glucose addition Soil fertility Black soils Nitrogen transformation |
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