Much improved irrigation use efficiency in an intensive wheat-maize double cropping system in the North China plain

Fang, Q; Chen, Y; Yu, Q; Ouyang, Z; Li, Q; Yu, S

Much improved irrigation use efficiency in an intensive wheat-maize double cropping system in the North China plain

Fang, Q Chen, Y Yu, Q

Ouyang, Z Li, Q Yu, S

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Publication Type:: Journal Article
Citation:: Journal of Integrative Plant Biology, 2007, 49 (10), pp. 1517 - 1526
Issue Date:: 2007-10-01

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Field	Value	Language
dc.contributor.author	Fang, Q	en_US
dc.contributor.author	Chen, Y	en_US
dc.contributor.author	Yu, Q https://orcid.org/0000-0001-6950-1821	en_US
dc.contributor.author	Ouyang, Z	en_US
dc.contributor.author	Li, Q	en_US
dc.contributor.author	Yu, S	en_US
dc.date.issued	2007-10-01	en_US
dc.identifier.citation	Journal of Integrative Plant Biology, 2007, 49 (10), pp. 1517 - 1526	en_US
dc.identifier.issn	1672-9072	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8728
dc.description.abstract	Crop yield and water use efficiency (WUE) in a wheat-maize double cropping system are influenced by short and uneven rainfalls in the North China Plain (NCP). A 2-year experiment was conducted to investigate the effects of irrigation on soil water balance, crop yield and WUE to improve irrigation use efficiency in the cropping system. Soil water depletion (ΔSWS) by crop generally decreased with the increase of irrigation and rainfall, while ΔSWS for the whole rotation was relatively stable among these irrigation treatments. High irrigations in wheat season increased initial soil moisture and ΔSWS for subsequent maize especially in the drought season. Initial soil water influenced mainly by the irrigation and rainfall in the previous crop season, is essential to high yield in such cropping systems. Grain yield decreased prior to evapotranspiration (ET) when ET reached about 300 mm for wheat, while maize showed various WUEs with similar seasonal ET. For whole rotation, WUE declined when ET exceeded about 650 mm. These results indicate great potential for improving irrigation use efficiency in such wheat - maize cropping system in the NCP. Based on the present results, reasonable irrigation schedules according to different annual rainfall conditions are presented for such a cropping system. © 2007 Institute of Botany, the Chinese Academy of Sciences.	en_US
dc.relation.ispartof	Journal of Integrative Plant Biology	en_US
dc.relation.isbasedon	10.1111/j.1672-9072.2007.00559.x	en_US
dc.subject.classification	Plant Biology & Botany	en_US
dc.title	Much improved irrigation use efficiency in an intensive wheat-maize double cropping system in the North China plain	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	49	en_US
utslib.for	0703 Crop and Pasture Production	en_US
utslib.for	0607 Plant Biology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	49	en_US

Abstract:

Crop yield and water use efficiency (WUE) in a wheat-maize double cropping system are influenced by short and uneven rainfalls in the North China Plain (NCP). A 2-year experiment was conducted to investigate the effects of irrigation on soil water balance, crop yield and WUE to improve irrigation use efficiency in the cropping system. Soil water depletion (ΔSWS) by crop generally decreased with the increase of irrigation and rainfall, while ΔSWS for the whole rotation was relatively stable among these irrigation treatments. High irrigations in wheat season increased initial soil moisture and ΔSWS for subsequent maize especially in the drought season. Initial soil water influenced mainly by the irrigation and rainfall in the previous crop season, is essential to high yield in such cropping systems. Grain yield decreased prior to evapotranspiration (ET) when ET reached about 300 mm for wheat, while maize showed various WUEs with similar seasonal ET. For whole rotation, WUE declined when ET exceeded about 650 mm. These results indicate great potential for improving irrigation use efficiency in such wheat - maize cropping system in the NCP. Based on the present results, reasonable irrigation schedules according to different annual rainfall conditions are presented for such a cropping system. © 2007 Institute of Botany, the Chinese Academy of Sciences.

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http://hdl.handle.net/10453/8728