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	Seasonal changes in the effects of free-air CO2 enrichment (FACE) on phosphorus uptake and utilization of rice at three levels of nitrogen fertilization
	Yang, Lianxin; Wang, Yulong; Huang, Jianye; Zhu, Jianguo; Yang, Hongjie; Liu, Gang; Liu, Hongjiang; Dong, Guichun; Hu, Jian
刊名	FIELD CROPS RESEARCH
	2007-06-05
卷号	102期号:2页码:141-150
关键词	free-air CO2 enrichment (FACE) phosphorus concentration phosphorus uptake phosphorus allocation phosphorus efficiency rice
ISSN号	0378-4290
DOI	10.1016/j.fcr.2007.03.004
通讯作者	Wang, Yulong(lxyang@yzu.edu.cn)
英文摘要	Over time, the relative effect of elevated [CO2] on the photosynthesis and dry matter (DM) production of rice crops is likely to be changed with increasing duration of Co-2 exposure. However, there is no systemic information on interactive effects of elevated [CO2] and nitrogen (N) supply on seasonal changes in phosphorus (P) nutrient of rice crops. In order to investigate the interactive effects of these two factors on seasonal changes in plant P concentration, uptake, efficiency and allocation, a free-air CO2 enrichment (FACE) experiment was conducted at Wuxi, Jiangsu, China, in 2001-2003. A japonica cultivar with large panicle was grown at ambient or elevated (ca. 200 mu mol mol(-1) above ambient) [CO2] and supplied with three levels of N: low (LN, 15 g N m(2)), medium (MN, 25 g N m(2)) and high N (HN, 35 g N m(2) (2002, 2003)). The MN level was similar to that recommended to local farmers. FACE significantly increased shoot P concentration (dry base) over the season, the average responses varied between 7.3% and 16.2%. Shoot P uptake responses to FACE declined gradually with crop development, with average responses of 57%, 51 %, 37%, 26% and 11% on average during the growth periods from transplanting to early-tillering (Period I), early-tillering to mid-fillering (Period II), mid-tillering to panicle initiation (Period III), panicle initiation to heading (Period IV) and heading to grain maturity (Period V), respectively. Seasonal changes in shoot P uptake ratio (i.e., the ratio of shoot P uptake during a given growth period to final shoot P acquisition at grain maturity) responses to FACE followed a similar pattern to that of shoot P uptake, with average responses of 19%, 14%, 3%, -5% and - 16% in Periods I, II, III, IV and V of the growth period, respectively. As a result, FACE enhanced shoot P uptake by 33% at grain maturity. P allocation patterns among above-ground organs were not altered by FACE before heading, but it was modified after heading, with a shift in P allocation patterns towards vegetative organ. FACE resulted in the significant decrease in P-use efficiency for biomass across the season and P-use efficiency for grain yield and P harvest index at grain maturity. Generally, there were no interactions between [CO2] and N supply on above P nutrient variables measured. Data from this study has important implications for P management in rice production systems under future elevated [CO2] conditions. (c) 2007 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	ORYZA-SATIVA L. ; ELEVATED CO2 ; CARBON-DIOXIDE ; GRAIN QUALITY ; SPRING WHEAT ; NUTRIENTS ; CROPS ; YIELD
WOS研究方向	Agriculture
WOS类目	Agronomy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000246815000006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558612
专题	南京土壤研究所
通讯作者	Wang, Yulong
作者单位	1.Yangzhou Univ, Key Lab Crop Genet & Physiol Jiangsu Province, Yangzhou 225009, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Yang, Lianxin,Wang, Yulong,Huang, Jianye,et al. Seasonal changes in the effects of free-air CO2 enrichment (FACE) on phosphorus uptake and utilization of rice at three levels of nitrogen fertilization[J]. FIELD CROPS RESEARCH,2007,102(2):141-150.
APA	Yang, Lianxin.,Wang, Yulong.,Huang, Jianye.,Zhu, Jianguo.,Yang, Hongjie.,...&Hu, Jian.(2007).Seasonal changes in the effects of free-air CO2 enrichment (FACE) on phosphorus uptake and utilization of rice at three levels of nitrogen fertilization.FIELD CROPS RESEARCH,102(2),141-150.
MLA	Yang, Lianxin,et al."Seasonal changes in the effects of free-air CO2 enrichment (FACE) on phosphorus uptake and utilization of rice at three levels of nitrogen fertilization".FIELD CROPS RESEARCH 102.2(2007):141-150.

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