N:P ratio of the grass Bothriochloa ischaemum mixed with the legume Lespedeza davurica under varying water and fertilizer supplies
文献类型：期刊论文
| 作者 | Xu, Bingcheng1; Gao, Zhijuan1; Wang, Jing1 ; Xu, Weizhou1,2; Palta, Jairo A.3,6; Chen, Yinglong1,2,4,5
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| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 400期号:1-2页码:67-79 |
| 关键词 | N:P ratio Fertilization Soil water content Mixture plantation Nutrient availability |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-015-2714-z |
| 通讯作者 | Xu, Weizhou(bcxu@ms.iswc.ac.cn) ; Chen, Yinglong(yinglongchen@hotmail.com) |
| 英文摘要 | Plant growth and ecosystem processes in semiarid regions are limited by soil nutrient and water availability. Nitrogen (N) and phosphorus (P) status and the N:P ratio alterations among plant organs are critical in understanding the physiology and productivity of the grass-legume mixture system. This study aimed to identify the N and P distribution patterns and N:P stoichiometry of a local grass species mixed with a legume species under varying water and fertilizer supplies. A C-4 perennial herbaceous grass Bothriochloa ischaemum and a C-3 perennial leguminous subshrub Lespedeza davurica were grown in a pot experiment with a randomized complete block design consisting of four fertilizations (non-NP, +N, +P and +NP fertilizers), three soil water regimes (80, 60 and 40 % of soil water field capacity, FC) and six planting ratios (2:10, 4:8, 6:6, 8:4, 10:2, and 12:0, grass:legume plants, respectively). Plants were assessed for biomass production, N and P concentration and N:P ratios in various organs 202 days after sowing (DAS). For the grass species (B. ischaemum), N and P concentrations of leaf, stem and root were higher when mixed with the legume (L. davurica) compared to its monoculture, and with a trend to decrease as its mixture proportion increased. Supply with P fertilizer (+P) increased N and P concentrations of B. ischaemum regardless of mixture proportions and soil water regimes. In mixtures, N concentration was the highest in the root system followed by the leaf, and the least in the stem. There was no significant difference in N:P ratio of the stem and the root across the mixture proportions under +P and +NP treatments, and among all soil water regimes, either. Root N:P ratio was significantly lower under +P and +NP than that under non-NP or +N treatment regardless of mixture proportions and soil water regimes. N and P capture and absorption in B. ischaemum were greatly improved when mixed with the legume species, L. davurica. The N and P concentrations in different organs were influenced by both fertilization and the mixture proportions. Application with combined N and P fertilizers enhanced N and P uptake in B. ischaemum. P fertilization should be considered when establishing artificial grassland using native species in the region. |
| WOS关键词 | SEMIARID LOESS PLATEAU ; RELATIVE COMPETITIVE ABILITY ; USE EFFICIENCY ; INTERCROPPING SYSTEMS ; NUTRIENT AVAILABILITY ; NITROGEN RESORPTION ; BIOMASS PRODUCTION ; PHOSPHORUS RATIOS ; NORTHERN CHINA ; INNER-MONGOLIA |
| 资助项目 | National Science Foundation of China[41371509] ; Fundamental Research Funds for the Central Universities[ZD2013020] ; Chinese Academy of Sciences |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000371276000006 |
| 出版者 | SPRINGER |
| 资助机构 | National Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/67326]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Weizhou; Chen, Yinglong |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.CSIRO Agr, Private Bag 5, Wembley, WA 6014, Australia 4.Univ Western Australia, Sch Earth & Environm, Perth, WA WA6009, Australia 5.Univ Western Australia, UWA Inst Agr, Perth, WA WA6009, Australia 6.Univ Western Australia, Sch Plant Biol, Perth, WA 6009, Australia |
| 推荐引用方式 GB/T 7714 | Xu, Bingcheng,Gao, Zhijuan,Wang, Jing,et al. N:P ratio of the grass Bothriochloa ischaemum mixed with the legume Lespedeza davurica under varying water and fertilizer supplies[J]. PLANT AND SOIL,2016,400(1-2):67-79. |
| APA | Xu, Bingcheng,Gao, Zhijuan,Wang, Jing,Xu, Weizhou,Palta, Jairo A.,&Chen, Yinglong.(2016).N:P ratio of the grass Bothriochloa ischaemum mixed with the legume Lespedeza davurica under varying water and fertilizer supplies.PLANT AND SOIL,400(1-2),67-79. |
| MLA | Xu, Bingcheng,et al."N:P ratio of the grass Bothriochloa ischaemum mixed with the legume Lespedeza davurica under varying water and fertilizer supplies".PLANT AND SOIL 400.1-2(2016):67-79. |
入库方式： OAI收割
来源：地理科学与资源研究所
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