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	Responses of rice and winter wheat to free-air CO2 enrichment (China FACE) at rice/wheat rotation system
	Ma, Hongliang; Zhu, Jianguo; Xie, Zubin; Liu, Gang; Zeng, Qing; Han, Yong
刊名	PLANT AND SOIL
	2007-05-01
卷号	294期号:1-2页码:137-146
关键词	elevated CO2 relative growth rate (RGR) carbon nitrogen phosphorus
ISSN号	0032-079X
DOI	10.1007/s11104-007-9241-5
通讯作者	Zhu, Jianguo(jgzhu@issas.ac.cn)
英文摘要	Free-air CO2 enrichment (FACE) system at a Chinese rice-wheat rotation field was constructed to investigate responses of rice and wheat crop growth to elevated CO2 and nitrogen fertilization. A factorial experiment design was set up with two levels of atmospheric CO2 concentration (350 and 550 mu mol mol(-1)) and N application rates (LN: 150 kg N ha(-1) for rice and 125 kg N ha(-1) for wheat; HN: 250 kg N ha(-1) for rice and wheat, respectively). Across the entire crop growing seasons, plant fractions (i.e. leaf, stem, ear and root) were differentiated at representative growth stages and analyzed using widely recognized parameters, relative growth rate (RGR) and allometric coefficient K-a (RGR ratio of above ground to below ground plant biomass). The C/N ratio and phosphorus concentration of plant were also determined. Rice and wheat RGRs responded to elevated CO2 in different ways, i.e. wheat RGR was always stimulated by elevated CO2 while rice RGR seemed to be depressed between rice tillering to jointing stages. Elevated CO2 affected the plant fractions differentially. For example, rice leaf might be the most strongly affected organ by RGR analysis and by K-a analysis it seems that elevated CO2 always led to higher below ground biomass (root) than above ground biomass. Besides, elevated CO2 usually resulted in a higher C/N ratio of plant due to its impact on N concentration instead of carbon. Regardless of CO2 treatment statistic analysis of rice and wheat RGR did not yield significant difference in plant growing patterns under LN and HN treatments, although LN always triggered a slightly higher C/N ratio of plant over the investigated period. Furthermore, it was generally observed that elevated CO2 could stimulate crop biomass to a greater extent under LN treatment than HN treatment. Phosphorus concentration of rice and wheat crop showed distinctive response to elevated CO2 and N constraint.
收录类别	SCI
WOS关键词	ELEVATED ATMOSPHERIC CO2 ; NUTRIENT-UPTAKE ; CARBON-DIOXIDE ; USE EFFICIENCY ; GRAIN QUALITY ; WATER-USE ; NITROGEN ; GROWTH ; YIELD ; PLANTS
WOS研究方向	Agriculture ; Plant Sciences
WOS类目	Agronomy ; Plant Sciences ; Soil Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000246615300012
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558728
专题	南京土壤研究所
通讯作者	Zhu, Jianguo
作者单位	1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Fujian Normal Univ, Coll Geog Sci, Fujian Provincial Key Lab Subtrop Resource & Envi, Fuzhou 350007, Peoples R China
推荐引用方式 GB/T 7714	Ma, Hongliang,Zhu, Jianguo,Xie, Zubin,et al. Responses of rice and winter wheat to free-air CO2 enrichment (China FACE) at rice/wheat rotation system[J]. PLANT AND SOIL,2007,294(1-2):137-146.
APA	Ma, Hongliang,Zhu, Jianguo,Xie, Zubin,Liu, Gang,Zeng, Qing,&Han, Yong.(2007).Responses of rice and winter wheat to free-air CO2 enrichment (China FACE) at rice/wheat rotation system.PLANT AND SOIL,294(1-2),137-146.
MLA	Ma, Hongliang,et al."Responses of rice and winter wheat to free-air CO2 enrichment (China FACE) at rice/wheat rotation system".PLANT AND SOIL 294.1-2(2007):137-146.

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