Comparison of water-saving potential of fallow and crop change with high water-use winter-wheat – summer-maize rotation

Yang, Yanmin; Yang, Yonghui; Han, Shumin; Li, Huilong; Wang, Lu; Ma, Qingtao; Ma, Lexin; Wang, Linna; Hou, Zhenjun; Chen, Li; Liu, De Li

doi:10.1016/j.agwat.2023.108543

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…This study measured the evapotranspiration of bare soil throughout the entire growth period and found it to be 173.57 mm, which is 45% of that of maize fields. Yanmin Yang et al [16] also acknowledged that bare soil evapotranspiration consumes a considerable amount of water and compared the water-saving potential of different soil surface management measures through experiments. What sets this study apart is that it quantitatively observed the evapotranspiration of bare soil at various growth stages of summer maize for comparison with maize fields.…”

Section: Variation Pattern Of Evapotranspiration In Maize Fields Thro...mentioning

confidence: 99%

A Pathway Analysis of Evapotranspiration Variation Characteristics and Influencing Factors of Summer Maize in the Haihe Plain

Guo,

Xu,

Liu

et al. 2024

Water

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The Haihe Plain in China is situated in the world’s largest groundwater funnel area, with per capita water resources far below the internationally recognized “extremely water-scarce” standard. To address the issue of water shortage in summer maize-planting areas of the Haihe Plain, we conducted research on the variation of summer maize evapotranspiration using a medium-sized lysimeter. This study aims to provide technical support for water-saving irrigation in summer maize fields. Through path analysis, direct and indirect influencing factors affecting the evapotranspiration of summer maize fields were determined. The results showed that the cumulative evapotranspiration of bare ground and farmland during the entire growth period of summer maize was 173.57 mm and 382.97 mm, respectively, with evapotranspiration intensities of 1.52 mm/d and 3.36 mm/d, respectively. Evapotranspiration during the maturity stage of summer maize was the least, accounting for only 1.82% of total evapotranspiration during the entire growth period. The period from the jointing to milk-ripening stage is when evapotranspiration in maize fields is at its highest. During this period, evapotranspiration in maize fields amounted to 265.58 mm, accounting for 69.35% of total evapotranspiration. The evapotranspiration intensity was 3.59 mm/day, which is 1.34 times higher than that of bare soil. The evapotranspiration intensities during each growth stage were ranked as jointing stage > tasseling-silking stage > seedling stage > milk maturity stage > maturity stage. The daily evapotranspiration of summer maize fields showed a “unimodal” curve with low values in the morning and evening, and high values at noon. Path analysis indicated that daily radiation and maximum daily temperature had the greatest impact on the evapotranspiration of maize fields, with the direct effect of maximum daily temperature being restrictive and the indirect effect being promotive, resulting in an overall promotive effect.

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Section: Variation Pattern Of Evapotranspiration In Maize Fields Thro...mentioning

confidence: 99%

A Pathway Analysis of Evapotranspiration Variation Characteristics and Influencing Factors of Summer Maize in the Haihe Plain

Guo,

Xu,

Liu

et al. 2024

Water

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What should we do for water security? A technical review on more yield per water drop

Leghari,

Han,

et al. 2024

Journal of Environmental Management

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The Effects of Changing Environments, Abiotic Stresses, and Management Practices on Cropland Evapotranspiration: A Review

Qiu,

Katul,

Zhang

et al. 2024

Reviews of Geophysics

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The significance of crop evapotranspiration (ETa) to climate science, agronomic research, and water resources is not in dispute. What continues to draw attention is how variability in ETa is driven by changing environments, abiotic stresses, and management practices. Here, the impacts of elevated CO2 concentration (e[CO2]), elevated ozone concentration (e[O3]), warming, abiotic stresses (water, salinity, heat stresses), and management practices (planting density, irrigation methods, mulching, nitrogen application) on cropland ETa were reviewed, along with their possible causes and estimation. Water and salinity stresses, e[O3], and drip irrigation adoption generally led to lower total growing–season ETa. However, total growing–season ETa responses to e[CO2], warming, heat stress, mulching, planting density, and nitrogen supplement appear inconsistent across empirical studies. The effects of e[CO2], e[O3], water and salinity stresses on total growing–season ETa are attributed to their influence on stomatal conductance, root water uptake, root and leaf area development, microclimate, and potentially phenology. Total growing–season ETa in response to warming is affected by variations in ambient growing–season mean air temperature and phenology. The differences in crop ETa under varying planting densities are due to their differences in leaf area. The responses of ETa to heat stress, mulching, and nitrogen application represent trade–off between their opposite effects on transpiration and evaporation, along with possibly phenology. Modified ETa models currently in use can estimate the response of ETa to the many aforementioned factors except for e[O3], heat stress, and nitrogen application. These factors offer a blueprint for future research inquiries.

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Comparison of water-saving potential of fallow and crop change with high water-use winter-wheat – summer-maize rotation

Cited by 4 publications

References 29 publications

A Pathway Analysis of Evapotranspiration Variation Characteristics and Influencing Factors of Summer Maize in the Haihe Plain

A Pathway Analysis of Evapotranspiration Variation Characteristics and Influencing Factors of Summer Maize in the Haihe Plain

What should we do for water security? A technical review on more yield per water drop

The Effects of Changing Environments, Abiotic Stresses, and Management Practices on Cropland Evapotranspiration: A Review

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