开放式空气CO2浓度增高对水稻N素吸收利用的影响

应用生态学报 ›› 2002, Vol. ›› Issue (10): 1219-1222.

开放式空气CO₂浓度增高对水稻N素吸收利用的影响

董桂春¹, 王余龙¹, 杨洪建¹, 黄建晔¹, 朱建国², 杨连新¹, 单玉华¹

1. 扬州大学农业部作物栽培生理重点实验室, 扬州, 225009;
2. 中国科学院南京土壤研究所, 南京, 210008

收稿日期:2002-06-12 修回日期:2002-08-03 出版日期:2002-10-15
通讯作者: 王余龙
基金资助:
中国科学院知识创新重要方向项目(KZCX2408);国家自然科学基金重大国际合作研究资助项目(40120140817).

DONG Guichun¹, WANG Yulong¹, YANG Hongjian¹, HUANG Jianye¹, ZHU Jianguo², YANG Lianxin¹, SHAN Yuhua ¹

1. Key Laboratory of Crop Cultivation and Physiology, Ministry of Agriculture, Yangzhou University, Yangzhou 225009;
2. Institute of Soil Science, Chines Academy of Sciences, Nanjing 210008

Received:2002-06-12 Revised:2002-08-03 Online:2002-10-15

摘要/Abstract

摘要： 在大田栽培条件下,研究空气中CO₂浓度增高(FACE)200μmol·mol^-1对水稻N素吸收及其利用效率的影响.结果表明,FACE处理使水稻不同生育时期的植株含N率显著下降;由于干物质生产量显著增大,FACE处理使水稻不同生育时期的N素累积量有所提高,但无显著影响;FACE处理能够显著提高移栽后28d、抽穗期以及成熟期单位N素的干物质生产效率、单位N素的籽粒生产效率和显著提高水稻的N素收获指数.高N处理的植株含N率、N素累积量均有所增加,但使N素生产效率呈现下降趋势.

Abstract: Effect of FACE, 200μmol·mol^-1 CO₂ elevation under field condition in this study, on nitrogen accumulation and nitrogen use efficiency in rice was investigated. Results showed that nitrogen content (%) in rice plant sampled at different growth stages decreased significantly under FACEtreatment, but FACEhad no obvious effect on nitrogen accumulation in rice plant due to the significant enhancement in dry matter production. FACEtreatment resulted in the significant increase in nitrogen use efficiency for biomass production (NUEp) which was measured at 28th day after transplanting, at heading and at maturity, respectively. Significant increase in nitrogen use efficiency for grain output (NUEg) and nitrogen harvest index (NHI) under FACE treatment was also observed in this study. Nitrogen content (%) and nitrogen accumulation in rice plant were increased under high N, but nitrogen use efficiency in rice plant were decreased.

中图分类号:

S511
S143.1

董桂春, 王余龙, 杨洪建, 黄建晔, 朱建国, 杨连新, 单玉华. 开放式空气CO₂浓度增高对水稻N素吸收利用的影响[J]. 应用生态学报, 2002, (10): 1219-1222.

DONG Guichun, WANG Yulong, YANG Hongjian, HUANG Jianye, ZHU Jianguo, YANG Lianxin, SHAN Yuhua . [J]. Chinese Journal of Applied Ecology, 2002, (10): 1219-1222.

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开放式空气CO₂浓度增高对水稻N素吸收利用的影响

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