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Photosynthetic performance of switchgrass and its relation to field productivity: A three-year experimental appraisal in semiarid Loess Plateau

文献类型：期刊论文

作者Xu, BC (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.; An Qin-qin2,3; Gao Zhi-juan1; Wang Zhi1,2; Chen Shao-lin4; Xu Bing-cheng1,2; Liu Jin-biao1
刊名JOURNAL OF INTEGRATIVE AGRICULTURE
出版日期2017
卷号16期号:6页码:1227-1235
关键词Switchgrass Photosynthesis Row Spacing Biomass Production Water Use Efficiency
ISSN号2095-3119
DOI10.1016/S2095-3119(16)61397-7
文献子类Article
英文摘要To reveal photosynthetic characteristics and biomass yield is important for evaluating introduced species adaptation to local environments. A field experiment was conducted over three consecutive years (2011-2013) to evaluate photosynthetic characteristics, soil water content, aboveground biomass accumulation, and water use efficiency (WUE) in switchgrass (Panicum virgatum L.) populations exposed to three row spacing (20, 40 and 60 cm) treatments in two growth months (June and August) on the semiarid Loess Plateau of China. Results indicated that net photosynthetic rate (Pr), transpiration rate (Tr), instantaneous water use efficiency (WUE,) and plant height of switchgrass showed an increased trend, but aboveground biomass production and WUE showed an decreased trend with enlarged row spacings over the three years. The maximum daily mean Pr, values (17.9, 18.4 and 19.7 pmol CO2 m(-2) s(-1)) were observed in 2011, and the highest aboveground biomass production (67771.8, 6976.8 and 6609.2 kg ha(-1)) were recorded in 2012 for 20, 40 and 60 cm, respectively. A close correlation between tiller numbers and aboveground biomass production (1 = 0.907) was observed. P-n was positively and significantly correlated with biomass per tiller, but it showed a negative correlation with aboveground biomass production. Our results confirm that wide row spacing is beneficial for single plant development, while narrow row spacing favors biomass production and water use of switchgrass in the region. It also implies that single leaf growth and performance could explain the switchgrass community density differences, while fails to account for the aboveground biomass production.
学科主题Agriculture
URL标识查看原文
出版地OXFORD
语种英语
WOS记录号WOS:000403164400004
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China [41371509]; Programs for New Century Excellent Talents in University, China [NCET-11-0444] ; National Natural Science Foundation of China [41371509]; Programs for New Century Excellent Talents in University, China [NCET-11-0444] ; National Natural Science Foundation of China [41371509]; Programs for New Century Excellent Talents in University, China [NCET-11-0444] ; National Natural Science Foundation of China [41371509]; Programs for New Century Excellent Talents in University, China [NCET-11-0444]
源URL[http://ir.iswc.ac.cn/handle/361005/8059]  
专题水保所科研产出--SCI_2017--SCI
通讯作者Xu, BC (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.
作者单位1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
3.Minist Water Resources, Yangling 712100, Peoples R China
4.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Peoples R China
推荐引用方式
GB/T 7714		 Xu, BC ,An Qin-qin,Gao Zhi-juan,et al. Photosynthetic performance of switchgrass and its relation to field productivity: A three-year experimental appraisal in semiarid Loess Plateau[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2017,16(6):1227-1235.
APA Xu, BC .,An Qin-qin.,Gao Zhi-juan.,Wang Zhi.,Chen Shao-lin.,...&Liu Jin-biao.(2017).Photosynthetic performance of switchgrass and its relation to field productivity: A three-year experimental appraisal in semiarid Loess Plateau.JOURNAL OF INTEGRATIVE AGRICULTURE,16(6),1227-1235.
MLA Xu, BC ,et al."Photosynthetic performance of switchgrass and its relation to field productivity: A three-year experimental appraisal in semiarid Loess Plateau".JOURNAL OF INTEGRATIVE AGRICULTURE 16.6(2017):1227-1235.

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