干旱区生态环境知识资源中心(Arid): Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions

Arid

DOI	10.1016/j.agwat.2019.105954
	Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions
	Yao, Ning 1,2; Li, Yi 2; Xu, Fang 1; Liu, Jian 2; Chen, Shang 2; Ma, Haijiao 2; Chau, Henry Wai 3; Liu, De Li 4; Li, Meng 1; Feng, Hao 1,5; Yu, Qiang 1,5; He, Jianqiang 1,2
通讯作者	He, Jianqiang
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2020
卷号	229
英文摘要	Soil parameters related to soil water holding capacity could play an important role in simulating winter wheat growth under severe soil water stress, which could heavily influence the simulated soil water contents, and then biomass and final yield. In this study, a field experiment of winter wheat (Triticum aestivum L.) was conducted in two consecutive growing seasons (2012-2014) under rainfall shelter in arid areas of China, with the purpose to identify to what extent the soil parameters could influence the simulated output variables in the DSSAT-CERES-Wheat model under water stress conditions. The permanent wilting point (PWP), which were initially indirectly measured based on soil sampling, were manually tuned through a trial-and-error method based on field observations of soil water content and aboveground biomass. The results showed that the maximum advancing of maturity date was about five days under water stress conditions. The stages of returning green and grain-filling were critical periods for agricultural water management of winter wheat in arid areas. The relative mean absolute error (RMAE) of simulated and observed variables were almost all less than 20% when water stress occurred at the heading and grain-filling stages. However, there were relatively large simulation errors when water stress occurred at the wintering and returning green stages. In addition, the CERES-Wheat model did not correctly simulate the discrepancies in phenology dates of winter wheat. The overall averaged root mean square error of all treatments for total water storage in 0-100 cm soil layer and winter wheat biomass decreased to 0.3 mm and 750 kg ha(-1) after manually tuning the initially indirectly measured value of PWP. In general, the CERES-Wheat model showed some limitations to simulate winter growth under complicated arid conditions. Meanwhile, the measurement uncertainty in soil parameter PWP could introduce large simulation errors in simulating crop growth response to severe water stress conditions. We suggest the soil parameter PWP should be more carefully calibrated based on relevant field observations since it is related to crop type and difficult to be directly and precisely measured. In general, it is necessary to further research into the responding mechanism and simulation of winter wheat growth to water stress in liable-drought areas.
英文关键词	Winter wheat Water stress Permanent wilting point CERES-Wheat DSSAT
类型	Article
语种	英语
国家	Peoples R China ; New Zealand ; Australia
收录类别	SCI-E
WOS记录号	WOS:000525280400024
WOS关键词	CERES-WHEAT ; SOIL-WATER ; FIELD-CAPACITY ; PEDOTRANSFER FUNCTIONS ; LIMITED IRRIGATION ; MODELS AFRCWHEAT2 ; USE EFFICIENCY ; GRAIN-YIELD ; DURUM-WHEAT ; PREDICTION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313945
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; 2.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid Area, Minist Educ, Yangling 712100, Shaanxi, Peoples R China; 3.Lincoln Univ, Fac Agr & Life Sci, Dept Soil & Phys Sci, Canterbury 7647, New Zealand; 4.Wagga Wagga Agr Inst, NSW Dept Primary Ind, Wagga Wagga, NSW 2650, Australia; 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yao, Ning,Li, Yi,Xu, Fang,et al. Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions[J]. 西北农林科技大学,2020,229.
APA	Yao, Ning.,Li, Yi.,Xu, Fang.,Liu, Jian.,Chen, Shang.,...&He, Jianqiang.(2020).Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions.AGRICULTURAL WATER MANAGEMENT,229.
MLA	Yao, Ning,et al."Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions".AGRICULTURAL WATER MANAGEMENT 229(2020).