Efficacy of irrigation in inland river basins: A comprehensive assessment

Efficacy of irrigation in inland river basins: A comprehensive assessment | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Efficacy of irrigation in inland river basins: A comprehensive assessment Hongbei Gao, Qinyang Cai, Xiujiao Shi, Shengdao Shan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3993501/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 7 You are reading this latest preprint version Abstract 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. Depending on the high-frequency water vapor and CO 2 fluxes recorded by the eddy-covariance system, a modified evapotranspiration partitioning method was employed to continuously monitor the availability of irrigated water in a wheat field. Concurrently, in-situ reference measurements were taken using micro-lysimeters to evaluate the effectiveness of this partitioning approach. The findings demonstrated that the refined partitioning method effectively segregated evapotranspiration into transpiration and evaporation. Transpiration, accounting for 54.8%, provided the primary contribution to evapotranspiration (454 mm) during the growth period. Evaporation (205 mm) played a significant role during the seeding and maturation stages. The evapotranspiration consumed 75.5% of the irrigated water (605 mm), and the remaining 24.5% was recharged to the groundwater during the wheat growth period. These results suggest that 58.4% (353 mm) of irrigation water was not absorbed by the crops. Changes in the plant canopy had the most substantial impact on water-use efficiency. Environmental factors like air temperature, relative humidity, vapor pressure deficit, and net radiation subtly and consistently regulated the ratio of evaporation and transpiration. However, the effects of irrigation events on water vapor fluxes were significant, albeit temporary. Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 29 Mar, 2024 Reviews received at journal 21 Mar, 2024 Reviewers agreed at journal 04 Mar, 2024 Reviewers invited by journal 04 Mar, 2024 Editor assigned by journal 01 Mar, 2024 Submission checks completed at journal 29 Feb, 2024 First submitted to journal 27 Feb, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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