Modeling a wheat-maize double cropping system in China using two plant growth modules in RZWQM

Yu, Q; Saseendran, SA; Ma, L; Flerchinger, GN; Green, TR; Ahuja, LR

Modeling a wheat-maize double cropping system in China using two plant growth modules in RZWQM

Yu, Q

Saseendran, SA Ma, L Flerchinger, GN Green, TR Ahuja, LR

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Publication Type:: Journal Article
Citation:: Agricultural Systems, 2006, 89 (2-3), pp. 457 - 477
Issue Date:: 2006-09-01

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Field	Value	Language
dc.contributor.author	Yu, Q https://orcid.org/0000-0001-6950-1821	en_US
dc.contributor.author	Saseendran, SA	en_US
dc.contributor.author	Ma, L	en_US
dc.contributor.author	Flerchinger, GN	en_US
dc.contributor.author	Green, TR	en_US
dc.contributor.author	Ahuja, LR	en_US
dc.date.issued	2006-09-01	en_US
dc.identifier.citation	Agricultural Systems, 2006, 89 (2-3), pp. 457 - 477	en_US
dc.identifier.issn	0308-521X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8904
dc.description.abstract	Agricultural system models are potential tools for evaluating soil-water-nutrient management in intensive cropping systems. In this study, we calibrated and validated the Root Zone Water Quality Model (RZWQM) with both a generic plant growth module (RZWQM-G) and the CERES plant growth module (RZWQM-C) for simulating winter wheat (Triticum aestivum L.) and maize (Zea mays L.) double cropping systems in the Northern China Plain (NCP), China. Data were obtained from an experiment conducted at Yucheng Integrated Agricultural Experimental Station (36°57′N, 116°36′E, 28 m asl) in the North China Plain (NCP) from 1997 to 2001 (eight crop seasons) with field measurements of evapotranspiration, soil water, soil temperature, leaf area index (LAI), biomass and grain yield. Using the same soil water and nutrient modules, both plant modules were calibrated using the data from one crop sequence during 1998-1999 when detailed measurements of LAI and biomass growth were available. The calibrated models were then used to simulate maize and wheat production in other years. Overall simulation runs from 1997 to 2001 showed that the RZWQM-C model simulated grain yields with a RMSE of 0.94 Mg ha -1 in contrast to a RMSE of 1.23 Mg ha-1 with RZWQM-G. The RMSE for biomass simulation was 2.07 Mg ha-1 with RZWQM-G and 2.26 Mg ha-1 with RZWQM-C model. The RMSE values of simulated evapotranspiration, soil water, soil temperature and LAI were 1.4 mm, 0.046 m3 m-3, 1.75°C and 1.0 for RZWQM-G and 1.4 mm, 0.047 m3 m-3, 1.84°C and 1.1 for RZWQM-C, respectively. The study revealed that both plant models were able to simulate the intensive cropping systems once they were calibrated for the local weather and soil conditions. Sensitivity analysis also showed that a reduction of 25% of current water and N applications reduced N leaching by 24-77% with crop yield reduction of 1-9% only. © 2005 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Agricultural Systems	en_US
dc.relation.isbasedon	10.1016/j.agsy.2005.10.009	en_US
dc.subject.classification	Agronomy & Agriculture	en_US
dc.title	Modeling a wheat-maize double cropping system in China using two plant growth modules in RZWQM	en_US
dc.type	Journal Article
utslib.citation.volume	2-3	en_US
utslib.citation.volume	89	en_US
utslib.for	0701 Agriculture, Land and Farm Management	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	07 Agricultural and Veterinary Sciences	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.declined	1970-01-01T00:00:00.0+1000
pubs.issue	2-3	en_US
pubs.publication-status	Published	en_US
pubs.volume	89	en_US

Abstract:

Agricultural system models are potential tools for evaluating soil-water-nutrient management in intensive cropping systems. In this study, we calibrated and validated the Root Zone Water Quality Model (RZWQM) with both a generic plant growth module (RZWQM-G) and the CERES plant growth module (RZWQM-C) for simulating winter wheat (Triticum aestivum L.) and maize (Zea mays L.) double cropping systems in the Northern China Plain (NCP), China. Data were obtained from an experiment conducted at Yucheng Integrated Agricultural Experimental Station (36°57′N, 116°36′E, 28 m asl) in the North China Plain (NCP) from 1997 to 2001 (eight crop seasons) with field measurements of evapotranspiration, soil water, soil temperature, leaf area index (LAI), biomass and grain yield. Using the same soil water and nutrient modules, both plant modules were calibrated using the data from one crop sequence during 1998-1999 when detailed measurements of LAI and biomass growth were available. The calibrated models were then used to simulate maize and wheat production in other years. Overall simulation runs from 1997 to 2001 showed that the RZWQM-C model simulated grain yields with a RMSE of 0.94 Mg ha -1 in contrast to a RMSE of 1.23 Mg ha-1 with RZWQM-G. The RMSE for biomass simulation was 2.07 Mg ha-1 with RZWQM-G and 2.26 Mg ha-1 with RZWQM-C model. The RMSE values of simulated evapotranspiration, soil water, soil temperature and LAI were 1.4 mm, 0.046 m3 m-3, 1.75°C and 1.0 for RZWQM-G and 1.4 mm, 0.047 m3 m-3, 1.84°C and 1.1 for RZWQM-C, respectively. The study revealed that both plant models were able to simulate the intensive cropping systems once they were calibrated for the local weather and soil conditions. Sensitivity analysis also showed that a reduction of 25% of current water and N applications reduced N leaching by 24-77% with crop yield reduction of 1-9% only. © 2005 Elsevier Ltd. All rights reserved.

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