Elevated CO2 effects on nutrient competition between a C-3 crop (Oryza sativa L.) and a C-4 weed (Echinochloa crusgalli L.)
文献类型：期刊论文
| 作者 | Zeng, Qing1; Liu, Biao2; Gilna, Ben3; Zhang, Yali1; Zhu, Chunwu1; Ma, Hongliang1; Pang, Jing1; Chen, Gaiping1; Zhu, Jianguo1 |
| 刊名 | NUTRIENT CYCLING IN AGROECOSYSTEMS
 |
| 出版日期 | 2011 |
| 卷号 | 89期号:1页码:93-104 |
| ISSN号 | 1385-1314 |
| 关键词 | FACE Nutrient competition Rice Barnyard grass Carbon Nitrogen Phosphorus Potassium |
| DOI | 10.1007/s10705-010-9379-z |
| 通讯作者 | Zhu, Jianguo(jgzhu@issas.ac.cn) |
| 英文摘要 | Rice (a C-3 crop) and barnyard grass (Echinochloa crusgalli L.) (a C-4 weed) were grown in a 1:1 mixture in a paddy field in ambient condition and with supplemented free air carbon dioxide enrichment (FACE, CO2 concentration + 200 mu mol mol(-1)), in order to evaluate the impact of rising atmospheric carbon dioxide on nutrient competition between rice crop and weed. Results showed that elevated CO2 significantly enhanced the biomass, tillers, leaf area index (LAI) and net assimilation rate (NAR) of rice, but reduced those of barnyard grass after elongation. Tissue nitrogen (N) concentrations were decreased in both competitors, but their phosphorus (P) and potassium (K) concentration were increased. The increase in tissue P concentration of rice was greater than that in barnyard grass. Furthermore, the absolute uptake of C, N, P, K by rice were increased while those of barnyard grass decreased. As a result, significant increase of the ratios of rice/barnyard grass of biomass and absolute nutrient uptake were observed under elevated CO2. The results suggest that rising atmospheric CO2 concentration could alter the competition between rice and barnyard grass in paddy fields in favor of rice. The ability of rice to compete more successfully for nitrogen and phosphorous under elevated CO2 is likely an important factor underlying this response. More generally, the results suggest that elevated CO2 may have varying implications on nutrient dynamics between different elements of overall plant biomass and the soil nutrients pool. |
| 收录类别 | SCI |
| WOS关键词 | ENRICHMENT FACE ; ATMOSPHERIC CO2 ; SEASONAL-CHANGES ; PHOSPHORUS AVAILABILITY ; TRIFOLIUM-REPENS ; GROWTH-RESPONSE ; INCREASING CO2 ; PLANT-TISSUES ; YIELD LOSS ; NITROGEN |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000285365100008 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559066 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhu, Jianguo |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.State Environm Protect Adm China, Nanjing Inst Environm Sci, Div Biodivers Conservat, Nanjing 210042, Peoples R China 3.Genok, Ctr Biosafety, N-9294 Tromso, Norway |
| 推荐引用方式 GB/T 7714 | Zeng, Qing,Liu, Biao,Gilna, Ben,et al. Elevated CO2 effects on nutrient competition between a C-3 crop (Oryza sativa L.) and a C-4 weed (Echinochloa crusgalli L.)[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2011,89(1):93-104. |
| APA | Zeng, Qing.,Liu, Biao.,Gilna, Ben.,Zhang, Yali.,Zhu, Chunwu.,...&Zhu, Jianguo.(2011).Elevated CO2 effects on nutrient competition between a C-3 crop (Oryza sativa L.) and a C-4 weed (Echinochloa crusgalli L.).NUTRIENT CYCLING IN AGROECOSYSTEMS,89(1),93-104. |
| MLA | Zeng, Qing,et al."Elevated CO2 effects on nutrient competition between a C-3 crop (Oryza sativa L.) and a C-4 weed (Echinochloa crusgalli L.)".NUTRIENT CYCLING IN AGROECOSYSTEMS 89.1(2011):93-104. |
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来源：南京土壤研究所
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