Growth and nitrogen uptake of CO2-enriched rice under field conditions

被引:171
作者
Kim, HY
Lieffering, M
Miura, S
Kobayashi, K
Okada, M
机构
[1] Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan
[2] Japan Sci & Technol Corp, Morioka, Iwate 0200198, Japan
[3] Tohoku Natl Agr Expt Stn, Dept Biol & Environm Sci, Morioka, Iwate 0200198, Japan
关键词
carbon dioxide; free-air CO2; enrichment (FACE); growth; nitrogen; rice; yield;
D O I
10.1046/j.1469-8137.2001.00111.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The effects of elevated CO2 are reported here on the uptake of nitrogen (N) and its relationships with growth and grain yield in rice (Oryza sativa). Using free-air CO2 enrichment (FACE), rice crops were grown at ambient or elevated (c. 300 mu mol mol(-1) above ambient) CO2 and supplied with tow, medium or high levels of N. For the medium and high N treatments, FACE increased N uptake at panicle initiation but not at maturity. For total dry matter, as well as spikelet number and grain yield, positive interactions between CO2 and N uptake were observed. Furthermore, spikelet number was closely associated with N uptake at panicle initiation. These results indicate that, to maximize rice grain yield under elevated CO2, it is important to supply sufficient N over the whole season, in order to maintain the enhancement in dry matter production. In addition, N availability must be co-ordinated with the developmental stage of the crop, specifically to ensure that sufficient N is available at panicle initiation in order to maximize spikelet number and grain yield.
引用
收藏
页码:223 / 229
页数:7
相关论文
共 26 条
[1]  
ALEXANDRATOS N, 1995, TOWARDS 2010
[2]  
Baker J. T., 1996, CARBON DIOXIDE TERRE, P265
[3]   Growth and nitrogen uptake in an experimental community of annuals exposed to elevated atmospheric CO2 [J].
Berntson, GM ;
Rajakaruna, N ;
Bazzaz, FA .
GLOBAL CHANGE BIOLOGY, 1998, 4 (06) :607-626
[4]   Elevated CO2 enhances below-ground C allocation in three perennial grass species at different levels of N availability [J].
Cotrufo, MF ;
Gorissen, A .
NEW PHYTOLOGIST, 1997, 137 (03) :421-431
[5]   More efficient plants: A consequence of rising atmospheric CO2? [J].
Drake, BG ;
GonzalezMeler, MA ;
Long, SP .
ANNUAL REVIEW OF PLANT PHYSIOLOGY AND PLANT MOLECULAR BIOLOGY, 1997, 48 :609-639
[6]   Physiological characteristics of high-yielding rice inferred from cross-location experiments [J].
Horie, T ;
Ohnishi, M ;
Angus, JF ;
Lewin, LG ;
Tsukaguchi, T ;
Matano, T .
FIELD CROPS RESEARCH, 1997, 52 (1-2) :55-67
[7]  
HORIE T, 1993, J AGR METEOROL, V48, P567, DOI [DOI 10.2480/AGRMET.48.567, 10.2480/ agrmet.48.567.]
[8]  
IMAI K, 1985, JPN J CROP SCI, V54, P413
[9]  
Imai K., 1995, CLIMATE CHANGE RICE, P253
[10]  
KATSUBE T., 1970, Bulletin of the Tohoku National Agricultural Experiment Station, V39, P55