Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions

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 3,4; Li, Yi 4; Xu, Fang 3; Liu, Jian 4; Chen, Shang 4; Ma, Haijiao 4; Chau, Henry Wai 2; Liu, De Li 5; Li, Meng 3; Feng, Hao 1,3
刊名	AGRICULTURAL WATER MANAGEMENT
	2020-02-28
卷号	229 页码:15
关键词	Winter wheat Water stress Permanent wilting point CERES-Wheat DSSAT
ISSN号	0378-3774
DOI	10.1016/j.agwat.2019.105954
通讯作者	He, Jianqiang(jianqiang_he@nwsuaf.edu.cn)
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.
资助项目	Natural Science Foundation of China[4173064] ; Open Project Fund from the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences[A314021402-1611] ; Ministry of Water Resources[A314021402-1611] ; Key Research and Development Program of Shaanxi[2019ZDLNY07-03] ; Science Promotion Project of Test and Demonstration Stations in the Northwest AF University[TGZX2018-32] ; 111 Project of China[B12007]
WOS关键词	CERES-WHEAT ; SOIL-WATER ; FIELD-CAPACITY ; PEDOTRANSFER FUNCTIONS ; LIMITED IRRIGATION ; MODELS AFRCWHEAT2 ; USE EFFICIENCY ; GRAIN-YIELD ; DURUM-WHEAT ; PREDICTION
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000525280400024
资助机构	Natural Science Foundation of China ; Open Project Fund from the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences ; Ministry of Water Resources ; Key Research and Development Program of Shaanxi ; Science Promotion Project of Test and Demonstration Stations in the Northwest AF University ; 111 Project of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133796]
专题	中国科学院地理科学与资源研究所
通讯作者	He, Jianqiang
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Lincoln Univ, Fac Agr & Life Sci, Dept Soil & Phys Sci, Canterbury 7647, New Zealand 3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid Area, Minist Educ, Yangling 712100, Shaanxi, Peoples R China 5.Wagga Wagga Agr Inst, NSW Dept Primary Ind, Wagga Wagga, NSW 2650, Australia
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]. AGRICULTURAL WATER MANAGEMENT,2020,229:15.
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,229,15.
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):15.