| 蚯蚓活动对土壤氮素矿化的影响 |
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| 引用本文： | 王霞,李辉信,朱玲,刘宾,胡锋. 蚯蚓活动对土壤氮素矿化的影响[J]. 土壤学报, 2008, 45(4): 641-648 |
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| 作者姓名： | 王霞 李辉信 朱玲 刘宾 胡锋 |
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| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;国家环境保护总局南京环境科学研究所,南京,210042
2. 南京农业大学资源与环境科学学院,南京,210095 |
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| 摘 要： | 通过室内培养试验和田间长期定位试验,探讨了蚯蚓活动对土壤矿质氮的影响。发现蚯蚓对NH4+-N、NO3--N,以及矿质总氮(NH4+-N+NO3--N)均有显著影响,且加速了土壤氮素矿化。小区试验中,在2001年稻季和2003年麦季,蚯蚓活动显著提高了NO3--N和矿质总氮(p<0.05*),但在其他时期,未有显著影响。室内培养试验中,蚯蚓活动明显加速了氮素矿化。尤其在未施用秸秆时,蚯蚓处理后的硝态氮和矿质总氮明显增加,且累积净矿化量和净矿化率也有显著提高。
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| 关 键 词： | 蚯蚓 矿质总氮 硝态氮 铵态氮 秸秆 |
| 收稿时间： | 2007-01-14 |
| 修稿时间： | 2007-04-10 |
EFFECTS OF EARTHWORMS ON SOIL N MINERALIZATION |
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| Wang Xi,Li Huixin,Zhu Ling,Liu Bin and Hu Feng. EFFECTS OF EARTHWORMS ON SOIL N MINERALIZATION[J]. Acta Pedologica Sinica, 2008, 45(4): 641-648 |
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| Authors: | Wang Xi Li Huixin Zhu Ling Liu Bin Hu Feng |
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| Affiliation: | 1 (1 College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China) (2 Nanjing Institute of Environmental Sciences,SEPA,Nanjing 210042,China) |
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| Abstract: | Effects of earthworms on soil mineral N were studied through lab incubation and long-term field experiment.It was found that earthworm greatly influence the NH+4-N,NO-3-N and NH+4-N+NO-3-N,and promoted the soil mineralization.In field experiment,NO-3-N and NH+4-N+NO-3-N were significantly increased by earthworm in rice season of 2001 and in wheat season of 2003.However,there were no signification effects in other harvest season.In the lab-incubation experiment,the role of earthworm on soil mineralization wa... |
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| Keywords: | Earthworms Soil mineral N NO-3-N NH+4-N Crop residues |
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