干旱区生态环境知识资源中心(Arid): Assessment of irrigation efficiency for arid-zone spring wheat production under flood irrigation

Arid

DOI	10.1007/s00271-024-00946-2
	Assessment of irrigation efficiency for arid-zone spring wheat production under flood irrigation
	Gao, Hongbei; Cai, Qinyang; Shi, Xiujiao; Shan, Shengdao; Zhuang, Haifeng
通讯作者	Gao, HB
来源期刊	IRRIGATION SCIENCE
ISSN	0342-7188
EISSN	1432-1319
出版年	2024
英文摘要	Understanding the availability of irrigation water at various growth stages is crucial for guiding agricultural scheduling in arid areas with limited water sources. However, challenges persist in swiftly and synchronously tracking water utilization post-irrigation, especially in discriminating between evaporation and transpiration. By utilizing high-frequency water vapor and carbon dioxide flux data collected by the eddy-covariance system, we employed the evapotranspiration partitioning method based on flux-variance similarity (FVS) to continuously monitor evaporation and transpiration. Through evaluating the effectiveness of the FVS-based partitioning approach with in-situ micro-lysimeters measurements and analyzing the impact of environmental factors using principal component analysis, the partitioning results, incorporating soil moisture content and groundwater levels, were utilized to assess the availability of irrigated water in a wheat field. The findings demonstrated that the refined partitioning method successfully separated evapotranspiration into transpiration and evaporation. Transpiration, contributing to 54.8%, was the primary driver of evapotranspiration (454 mm) during the growth period, while evaporation (205 mm) played a significant role during the seeding and maturation stages. Overall, evapotranspiration consumed 75.5% of the irrigated water (605 mm), with the remaining 24.5% recharged to the groundwater throughout the wheat growth period. These results indicated that 58.4% (comprising evaporation and deep leakage, totaling 353 mm) of irrigation water was not absorbed by the crops. Environmental factors such as air temperature, relative humidity, vapor pressure deficit, and net radiation subtly and consistently influenced the ratio of evaporation and transpiration, with changes in the plant canopy having the most substantial impact on water-use efficiency. Notably, the effects of irrigation events on water vapor fluxes were significant but temporary.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001251510500001
WOS关键词	ENERGY-BALANCE CLOSURE ; GAP FILLING STRATEGIES ; WATER-USE EFFICIENCY ; DEFICIT IRRIGATION ; FLUX MEASUREMENTS ; CARBON-DIOXIDE ; SAP FLOW ; EVAPOTRANSPIRATION ; HEAT ; GROUNDWATER
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/2XILL650/404295
推荐引用方式 GB/T 7714	Gao, Hongbei,Cai, Qinyang,Shi, Xiujiao,et al. Assessment of irrigation efficiency for arid-zone spring wheat production under flood irrigation[J],2024.
APA	Gao, Hongbei,Cai, Qinyang,Shi, Xiujiao,Shan, Shengdao,&Zhuang, Haifeng.(2024).Assessment of irrigation efficiency for arid-zone spring wheat production under flood irrigation.IRRIGATION SCIENCE.
MLA	Gao, Hongbei,et al."Assessment of irrigation efficiency for arid-zone spring wheat production under flood irrigation".IRRIGATION SCIENCE (2024).