Arid
DOI10.3390/su12229451
Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model
Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun
通讯作者Cai, HJ
来源期刊SUSTAINABILITY
EISSN2071-1050
出版年2020
卷号12期号:22
英文摘要Deficit irrigation strategy is essential for sustainable agricultural development in arid regions. A two-year deficit irrigation field experiment was conducted to study the water dynamics of winter wheat under deficit irrigation in Guanzhong Plain in Northwest China. Three irrigation levels were implemented during four growth stages of winter wheat: 100%, 80% and 60% of actual evapotranspiration (ET) measured by the lysimeter with sufficient irrigation treatment (CK). The agro-hydrological model soil-water-atmosphere-plant (SWAP) was used to simulate the components of the farmland water budget. Sensitivity analysis for parameters of SWAP indicated that the saturated water content and water content shape factor n were more sensitive than the other parameters. The verification results showed that the SWAP model accurately simulated soil water content (average relative error (MRE) < 21.66%, root mean square error (RMSE) < 0.07 cm(3) cm(-3)) and ET (R-2 = 0.975, p < 0.01). Irrigation had an important impact on actual plant transpiration, but the actual soil evaporation had little change among different treatments. The average deep percolation was 14.54 mm and positively correlated with the total irrigation amount. The model established using path analysis and regression methods for estimating ET performed well (R-2 = 0.727, p < 0.01). This study provided effective guidance for SWAP model parameter calibration and a convenient way to accurately estimate ET with fewer variables.
英文关键词irrigation pattern crop model evapotranspiration sensitivity analysis path analysis
类型Article
语种英语
开放获取类型gold
收录类别SCI-E ; SSCI
WOS记录号WOS:000594581100001
WOS关键词YIELD COMPONENTS ; GUANZHONG PLAIN ; USE EFFICIENCY ; PATH-ANALYSIS ; ROOT-GROWTH ; SENSITIVITY-ANALYSIS ; SALINE WATER ; MAIZE ; UNCERTAINTY ; DYNAMICS
WOS类目Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
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/2XILL650/327784
作者单位[Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun] Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Yangling 712100, Shaanxi, Peoples R China; [Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun] Northwest A&F Univ, Inst Watersaving Agr Arid Areas China, Yangling 712100, Shaanxi, Peoples R China; [Wang, Xiaowen; Cai, Huanjie; Li, Liang; Wang, Xiaoyun] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xiaowen,Cai, Huanjie,Li, Liang,et al. Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model[J]. 西北农林科技大学,2020,12(22).
APA Wang, Xiaowen,Cai, Huanjie,Li, Liang,&Wang, Xiaoyun.(2020).Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model.SUSTAINABILITY,12(22).
MLA Wang, Xiaowen,et al."Estimating Soil Water Content and Evapotranspiration of Winter Wheat under Deficit Irrigation Based on SWAP Model".SUSTAINABILITY 12.22(2020).
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