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DOI	10.1016/j.agwat.2021.106767
	Modeling maize production under growth stage-based deficit irrigation management with RZWQM2
	Zhang, Huihui; Ma, Liwang; Douglas-Mankin, Kyle R.; Han, Ming; Trout, Thomas J.
通讯作者	Zhang, HH (corresponding author), USDA ARS, Water Management & Syst Res Unit, Ft Collins, CO 80526 USA.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	248
英文摘要	Farmers are challenged to maintain yield and economic productivity with declining water resources and climatic variability in semi-arid regions worldwide. Growth stage-based deficit irrigation has been suggested as a feasible approach to maintain yields with less water. Experiments were conducted in 2012, 2013, and 2015 in which maize (Zea mays L.) was irrigated under twelve treatments with varied levels of deficit irrigation during the late vegetative (Lveg) and maturation (Mat) growth-stage periods in Northern Colorado. The Root Zone Water Quality Model 2 (RZWQM2)-CERES-Maize model was used to simulate the effects of growth stage-based deficit irrigation on maize production and yield components. The results showed that RZWQM2 could simulate the impact of temperature on maize phenology but did not simulate the impact of water stress on maize maturity. Both simulated and observed aboveground biomass, grain yield, and kernel weight decreased with the decrease of irrigation water amount during Lveg and Mat periods. In general, the simulated aboveground biomass and grain yield showed larger errors in terms of root mean squared error (RMSE), relative RMSE, and Nash-Sutcliffe efficiency, than those reported in the previous modeling studies where deficit irrigation was applied uniformly throughout the growing seasons in the same field. Future efforts to improve the effects of deficit irrigation on kernel development will likely make RZWQM2 a better tool for optimizing irrigation management in semi-arid regions.
英文关键词	Root Zone Water Quality Model CERES-Maize Grain yield Kernel weight Kernel number
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000632327800001
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349327
作者单位	[Zhang, Huihui; Douglas-Mankin, Kyle R.; Trout, Thomas J.] USDA ARS, Water Management & Syst Res Unit, Ft Collins, CO 80526 USA; [Ma, Liwang] USDA ARS, Rangeland Resources & Syst Res Unit, Ft Collins, CO 80526 USA; [Han, Ming] Univ Waterloo, Dept Civil & Environm Engn, Waterloo, ON, Canada
推荐引用方式 GB/T 7714	Zhang, Huihui,Ma, Liwang,Douglas-Mankin, Kyle R.,et al. Modeling maize production under growth stage-based deficit irrigation management with RZWQM2[J],2021,248.
APA	Zhang, Huihui,Ma, Liwang,Douglas-Mankin, Kyle R.,Han, Ming,&Trout, Thomas J..(2021).Modeling maize production under growth stage-based deficit irrigation management with RZWQM2.AGRICULTURAL WATER MANAGEMENT,248.
MLA	Zhang, Huihui,et al."Modeling maize production under growth stage-based deficit irrigation management with RZWQM2".AGRICULTURAL WATER MANAGEMENT 248(2021).