Ammonia volatilization losses from a rice paddy with different irrigation and nitrogen managements

Xu, Junzeng; Peng, Shizhang; Sung-Bum, Yang; Wang, Weiguang

doi:10.1016/j.agwat.2011.12.013

Cited by 211 publications

(82 citation statements)

References 53 publications

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“…In rice fields with controlled irrigation, the shallow flooding water is maintained in the re-greening stage or within 3-5 days after the application of pesticide and fertilizer; irrigation was applied only to saturate the soil without flooding in the rice growth period except the re-greening stage. The lower soil moisture thresholds for control irrigation were 70,65,60,70,75,80, and 70% of the saturated soil moisture during the early tillering, middle tillering, later tillering, jointing, booting, earing to sprouting, and milk maturity stages, respectively, consistent with those given by Xu et al (2012).…”

Section: Site Descriptionsupporting

confidence: 71%

Effects of soil heat storage and phase shift correction on energy balance closure of paddy fields

Liu

Sung-Bum

Zhang³

et al. 2017

Atm

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RESUMENSe utilizó el método de covarianza eddy para medir los flujos de energía en un arrozal con ahorro de agua de riego en la Llanura del Sur de China, durante la etapa de crecimiento del arroz en 2013. También se analiza la respuesta del balance de energía superficial al cambio de almacenamiento térmico en el suelo entre las placas de flujo térmico enterradas a una profundidad específica y la superficie, y la corrección del desfase de los componentes del balance de energía, por medio de tres métodos estadísticos: mínimos cuadrados ordinarios (MCO), proporción del balance de energía (PBE) y remanente del balance de energía (D). Los resultados muestran que la curva de los MCO se incrementó 8.8% en promedio y el PBE medio diario aumentó 0.5% después de considerar el cambio en el almacenamiento térmico del suelo. El rango de las magnitudes de D registradas cada media hora varía de -129-260 W m -2 a -102-194 W m -2 , y los valores absolutos de D decrecieron 9.9% en promedio. Tomando en cuenta la fase de corrección, el incremento en los coeficientes de regresión de los MCO (con un promedio de 11.3%) y el decremento de D en las mediciones realizadas cada media hora (que van de -61 a 176 W m -2 ), ambos indicaron que la corrección de la fase de desplazamiento mejoró el cierre del balance de energía superficial en escalas de media hora, especialmente entre el amanecer y el mediodía, pero careció de utilidad en la escala diaria. Esto indica que ambos métodos son útiles para mejorar el grado del cierre del balance de energía, representado en diferentes escalas temporales con un índice de evaluación adecuado. Es necesario realizar investigaciones ulteriores que presten mayor atención a otros aspectos de la corrección. ABSTRACTThe eddy covariance technique was used to measure the energy fluxes of a paddy field under water-saving irrigation in the South China Plain for the stage of rice growth in 2013. This study analyzed the energy balance components and evaluated the energy balance closure. The study also discussed the response of surface energy balance to the change in soil heat storage between the heat flux plates buried at a specific depth and the surface, and the phase shift correction of energy balance components, by using three different statistical methods, namely ordinary least squares (OLS), energy balance ratio (EBR), and energy balance residual (D). The results showed that the OLS slope increased by an average of 8.8%, and the mean daily EBR increased by 5.0% after considering the change in soil heat storage. The range of half-hourly D over a four-month period decreased from -129 -260 W m −2 to -102 -194 W m −2, and the absolute value of D decreased by 9.9% on the average. Considering the phase correction, the increase in OLS regression coefficients with an average of 11.3% and the decrease in half-hourly D, ranging from -61 to 176 W m −2 , both indicated that phase shift correction improved the surface energy balance closure at the half-hourly scale, specifically in the period from sunrise to noon, but had no...

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Section: Site Descriptionsupporting

confidence: 71%

Effects of soil heat storage and phase shift correction on energy balance closure of paddy fields

Liu

Sung-Bum

Zhang³

et al. 2017

Atm

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“…Meanwhile, water-saving irrigation ， which was widely adopted in rice cultivation to cope with water scarcity (Mao, 2001;Bouman et al, 2007), led to change of nitrogen losses and nitrogen balance in rice fields. The influence of water management or combined water and nitrogen managements on AV loss from rice paddies arose as a new issue recently (Li et al, 2008a;Xu et al, 2012). Scivittaro et al (2010) indicated that moist soil resulted in higher AV losses than muddy soil.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al (2008a) and Xu et al (2012) found the first flooding-drying cycle after N fertilization led to higher AV loss in the short period than flooding irrigation, but multi wet-dry cycles are likely to reduce the seasonal AV loss from transplanted rice fields, and concluded that a higher water level during the first flooding-drying cycle period after surface fertilizer application was necessary to mitigate AV loss from the zero-drainaged or non-flooding irrigated rice fields. Furthermore, the combination non-flooding irrigation and controlled released urea was effective to reduce AV loss from transplanted rice fields (Xu et al, 2012). Thus, nitrogen and water managements are important practices linked with AV loss from the traditional transplanted rice fields.…”

Section: Introductionmentioning

confidence: 99%

“…Controlled released urea (CU), deep fertilization, and urease inhibitors were always considered as important methods to reduce AV loss from rice fields (Zhu et al, 1989;Wang et al, 2007;Li et al, 2008b;Hayashi et al, 2008;Pacholski et al, 2008;Sanz-Cobena et al, 2008;Scivittaro et al, 2010;Xu et al, 2012). Meanwhile, water-saving irrigation ， which was widely adopted in rice cultivation to cope with water scarcity (Mao, 2001;Bouman et al, 2007), led to change of nitrogen losses and nitrogen balance in rice fields.…”

Section: Introductionmentioning

confidence: 99%

“…Ammonia volatilization (AV) is one of the most important pathways of nitrogen (N) loss from rice fields, which accounted for about 10%-60% of nitrogen application (Fillery and De Datta, 1986;Xu et al, 2012). Large amounts of ammonia emitted into the atmosphere exerted toxic, eutrophic and acidifying effects on ecosystem (Van der Eerden et al, 1998;Emmett, 2007;Pinder et al, 2007;Liu and Diamond, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Ammonia Volatilization from Direct Seeded Later-rice Fields as Affected by Irrigation and Nitrogen Managements

Liao¹,

Shao²,

RenJing³

et al. 2015

IJAB

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Ammonia volatilization (AV) from direct seeded later-rice (DSR) fields was investigated based on plot experiment with different irrigation (traditional flooding irrigation (TI) and controlled irrigation (CI)) and nitrogen (farmers' fertilization practice (FF) and controlled released urea (CU)) managements. Seasonal AV losses were 64.0, 69.5, 33.0 and 24.6 kg N ha -1 from CIFF, TIFF, TICU and CICU fields, accounting for 18.3, 19.9, 13.7 and 10.3% of nitrogen inputs not as high as expected, and falling in the range reported in transplanted rice fields with the similar nitrogen treatments. Thus, it is difficult to answer the question if DSR practice will lead to significantly higher AV loss than transplanted cultivation. Mixed basal nitrogen fertilizer into muddy and frequently rainfall in the first forty days in rice season might account for the low AV loss percentages from DSR field in current research. Both nitrogen and irrigation management significantly affected AV loss from DSR fields, with the nitrogen management as the predominant factor. Compared with the farmers' fertilization， controlled released urea led to the reduced and retarded AV process. The controlled irrigation led to higher AV peaks immediately after nitrogen application in short period, but lower AV rates in long periods after the pulse AV emission than traditional flooding irrigation. The combination of controlled irrigation and controlled released urea is help to reduce AV loss from DSR field.

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Greenhouse Gas Emissions in Wetland Rice Systems

Horwáth

2022

Multi‐Scale Biogeochemical Processes in Soil Ecosystems

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Ammonia volatilization losses from a rice paddy with different irrigation and nitrogen managements

Cited by 211 publications

References 53 publications

Effects of soil heat storage and phase shift correction on energy balance closure of paddy fields

Effects of soil heat storage and phase shift correction on energy balance closure of paddy fields

Ammonia Volatilization from Direct Seeded Later-rice Fields as Affected by Irrigation and Nitrogen Managements

Greenhouse Gas Emissions in Wetland Rice Systems

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