Appropriate nitrogen supply could improve soil microbial and chemical characteristics with Sophora davidii seedlings cultivated in water stress conditions
文献类型：期刊论文
| 作者 | Wu, Fuzhong ; Bao, Weikai ; Zhou, Zhiqiong ; Li, Fanglan |
| 刊名 | ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
 |
| 出版日期 | 2012 |
| 卷号 | 62期号:1页码:49-58 |
| 关键词 | Arid environment enzyme activity microbial biomass N supply water deficit |
| ISSN号 | 0906-4710 |
| 产权排序 | 1 |
| 通讯作者 | Bao, WK (reprint author), Chinese Acad Sci, ECORES Lab, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China. |
| 英文摘要 | A greenhouse experiment was conducted to investigate the changes of soil microbial activities and chemical properties under different water and nitrogen (N) supply conditions. A completely randomized design was subjected to three water regimes (80%, 40% and 20% water field capacity (FC)) and three N supply regimes (control, N0: 0 mg N kg(-1) soil; low N supply, Nl: 92 mg N kg(-1) soil; and high N supply, Nh: 184 mg N kg(-1) soil) by potting with 2-month-old Sophora davidii seedlings. Water stress decreased the content of soil organic carbon (C), available N and phosphorus (P), the ratio of C/N, the ratio of C/P, as well as activities of soil invertase, urease and alkaline phosphatase, but not reduced microbial biomass C, N and P contents. Soil microbial and chemical characteristics also exhibited strong responses to N supply, and these responses were inconsistent among N supply levels. The contents of soil organic C and available P showed stronger positive responses to Nl than to Nh, while the available N content increased with increasing N supply. Additionally, Nl rather than the other two N treatments led to increased microbial biomass N and invertase activity under 20% FC treatment, even though the invertase activity increased in Nh treatment under 40% FC and 80% FC treatments. Nl treatment also increased the C/P ratio and alkaline phosphatase activity. These results suggest that water and N co-limited nutrient mineralization and microbial activity, and that these characteristics responded positively to Nl. Therefore, appropriate or low N supply is recommended to increase soil quality restrained by water stress, thereby facilitating S. davidii seedling establishment under water deficit conditions. |
| 学科主题 | Agriculture |
| 收录类别 | SCI |
| 资助信息 | State Key Basic Research and Development Plan of China [(2005)CB422006]; Chinese Academy of Science [KZCX2-XB2-02] |
| 语种 | 英语 |
| WOS记录号 | WOS:000298292200006 |
| 公开日期 | 2013-07-03 |
| 源URL | [http://210.75.237.14/handle/351003/23840]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Wu, Fuzhong,Bao, Weikai,Zhou, Zhiqiong,et al. Appropriate nitrogen supply could improve soil microbial and chemical characteristics with Sophora davidii seedlings cultivated in water stress conditions[J]. ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,2012,62(1):49-58. |
| APA | Wu, Fuzhong,Bao, Weikai,Zhou, Zhiqiong,&Li, Fanglan.(2012).Appropriate nitrogen supply could improve soil microbial and chemical characteristics with Sophora davidii seedlings cultivated in water stress conditions.ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,62(1),49-58. |
| MLA | Wu, Fuzhong,et al."Appropriate nitrogen supply could improve soil microbial and chemical characteristics with Sophora davidii seedlings cultivated in water stress conditions".ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE 62.1(2012):49-58. |
入库方式： OAI收割
来源：成都生物研究所
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