| CO_2浓度、氮素和水分对春小麦碳素固定的影响 |
| |
| 引用本文： | 李伏生,康绍忠. CO_2浓度、氮素和水分对春小麦碳素固定的影响[J]. 土壤通报, 2004, 35(5): 546-549 |
| |
| 作者姓名： | 李伏生 康绍忠 |
| |
| 作者单位： | 1. 广西大学,农学院,广西,南宁,530005
2. 西北农林科技大学,教育部旱区农业水土工程重点实验室,陕西,杨凌,712100 |
| |
| 基金项目： | 国家重大基础研究计划项目(G1999011708)和广西大学基金(DD160002) |
| |
| 摘 要： | 试验设350μmolmol-1和700μmolmol-12种CO2浓度水平,湿润、干旱2种水分处理和施N0、50、100、150和200mgkg-15个水平。结果表明,CO2浓度增加,春小麦地上部碳固定量和碳固定总量均增加,但与氮肥施用水平有关。在中氮和高氮时,CO2浓度增高,地上部碳固定量和碳固定总量明显增加,而不施氮肥和低氮时,增加则不明显。不同水分处理地上部碳固定量和碳固定总量也没有明显差别,这表明,CO2浓度升高对氮素和水分胁迫及对春小麦碳固定并没有补偿作用。
|
| 关 键 词： | CO2浓度升高 水分 氮 碳固定量 |
| 文章编号： | 0564-3945(2004)05-0546-04 |
| 修稿时间： | 2003-06-25 |
Effect of CO2 Concentration,Nitrogen and Water on Plant Carbon Fixation in Spring Wheat |
| |
| LI Fu-sheng,KANG Shao-zhongy of Agri. Soil and Water Engineering in the Arid and Semiarid Areas,Ministry ofEducation,Northwest Sci-tec University of Agri. and Forestry,Yangling,Shaanxi ). Effect of CO2 Concentration,Nitrogen and Water on Plant Carbon Fixation in Spring Wheat[J]. Chinese Journal of Soil Science, 2004, 35(5): 546-549 |
| |
| Authors: | LI Fu-sheng KANG Shao-zhongy of Agri. Soil Water Engineering in the Arid Semiarid Areas Ministry ofEducation Northwest Sci-tec University of Agri. Forestry Yangling Shaanxi ) |
| |
| Affiliation: | LI Fu-sheng~1,KANG Shao-zhong~2y of Agri. Soil and Water Engineering in the Arid and Semiarid Areas,Ministry ofEducation,Northwest Sci-tec University of Agri. and Forestry,Yangling,Shaanxi 712100) |
| |
| Abstract: | This study investigated plant C fixation of spring wheat(Triticum aestivum L.)grown under two atmospheric CO_2 concentrations(350 and 700 μmol mol~(-1)),two soil moisture treatments (well-watered and drought)and five nitrogen fertilizer treatments(0,50,100,150,200 mg kg~(-1)).Results showed that the effects of CO_2 concentration enrichment on the amount of shoot carbon fixed and total carbon fixed depended on soil nitrogen level.In medium N and high N treatment,the amount of shoot carbon fixed and total carbon fixed increased significantly;while in 1ow N treatment,the amount of shoot carbon fixed and total carbon fixed did not increase significantly.There are no significant effects of high CO_2 on the amount of shoot carbon fixed and total carbon fixed between two water treatments.The results indicated that high CO_2 concentration cannot ameliorate the depressive effects of drought and nitrogen stress on carbon fixed by spring wheat. |
| |
| Keywords: | CO_2 Concentration enrichment Soil moisture Nitrogen Carbon fixation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
