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The Model of Water and Nitrogen Coupling in Winter Wheat Yield

Zhai Bingnian,Li Shengxiu

Strategic Study of CAE 2002, Volume 4, Issue 9,   Pages 69-74

Abstract:

By using the quadratic general spinning design, pot experiments were conducted to study the comprehensive effect of the stage and rate of N fertilizer application under different status of soil moisture on winter wheat yield systematically. The results showed that the mathematical model established based on the result of experiments is significant. By analysing the mathematical model, the soil moisture, tillering and jointing stage were thought to be the remarkable factors, while the influencing sequence from large to small is： soil moisture ＞ tillering stage ＞ jointing stage ＞ milking stage ＞ seedling stage; The interaction effects exist between different factors.

Keywords： winter wheat     nitrogen     soil moisture     water and nitrogen coupling     mathematical model    

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Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloomcontrol in reclaimed water landscape

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1564-1

Abstract:

● A new model for bloom control in open land scape water was constructed

Keywords： Reclaimed water landscape     Algal bloom     Nitrogen and phosphorus     Hydraulic retention time     Threshold    

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IMPROVING NITROGEN SAFETY IN CHINA: NITROGEN FLOWS, POLLUTION AND CONTROL

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 465-474 doi: 10.15302/J-FASE-2022454

Abstract:

● It is necessary to address the N flows and their impacts on environment in China for sustainable N management.

Keywords： barriers     future management     ammonia emissions     nitrogen input     water N pollution    

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CRITICAL PROCESSES AND MAJOR FACTORS THAT DRIVE NITROGEN TRANSPORT FROM FARMLAND TO SURFACE WATER BODIES

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 541-552 doi: 10.15302/J-FASE-2023518

Abstract: however, the response of surface water quality at the watershed scale into the nitrogen loss at theThe critical processes of farmland nitrogen entering surface water bodies involve the processes of nitrogennitrogen transport to surface water bodies.nitrogen from farmland to surface water bodies.of farmland nitrogen entering surface water bodies.

Keywords： nitrogen     loss from soil     transformation     farm field scale     watershed scale    

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Effects of mulching for water conservation on soil carbon, nitrogen and biological properties

Xiaomin PI, Tongxun ZHANG, Benhua SUN, Quanhong CUI, Yun GUO, Mingxia GAO, Hao FENG, David W. HOPKINS

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 146-154 doi: 10.15302/J-FASE-2017136

Abstract: The effect of mulching with straw, white plastic film and black plastic film for improving soil waterAll the mulches improved the water storage to some extent and led to warmer soils.

Keywords： biomass     carbon     mulch     nitrogen     plastic films     soil     straw     water storage    

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Boron and nitrogen co-doped porous carbon derived from sodium alginate enhanced capacitive deionizationfor water purification

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2014-2024 doi: 10.1007/s11705-023-2346-4

Abstract: Capacitive deionization can alleviate water shortage and water environmental pollution, but performances

Keywords： capacitance deionization     porous carbon     B/N co-doping     heavy metal ions     water purification    

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Improved nitrogen removal in dual-contaminated surface water by photocatalysis

Yongming ZHANG, Rong YAN, Zhen ZOU, Jiewei WANG, Bruce E. RITTMANN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 428-436 doi: 10.1007/s11783-012-0401-3

Abstract: Batch denitrification tests in a biofilm reactor demonstrated that dual-contaminated river water wasshort of available electron donor, which resulted in low total nitrogen (TN) removal by denitrificationdenitrification rate was increased significantly by adding glucose or by making the organic matters of the river waterPhotocatalysis for 15 min increased the Chemical Oxygen Demand (COD) of the river water from 53 to 84This phenomenon was verified by testing photocatalysis of pyridine added to the river water.

Keywords： dual contamination     eutrophication     photocatalysis     remediation     surface water    

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Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 106-116 doi: 10.1007/s11783-012-0474-z

Abstract: Nitrogen contamination of surface water is a worldwide environmental problem with intensive agriculturespecies present in surface-water in Beijing, China.mg·L , ammonium nitrogen from 0.1 to 3.4 mg·L , and total nitrogen from 2.4 to 17.0 mg·L .Nitrate nitrogen, ammonium nitrogen, and total nitrogen concentrations at the 2 downstream monitoringMethods to control and reduce sewage pollution are urgently needed to help manage surface water quality

Keywords： nitrogen concentration     spatial and seasonal variation     stable nitrogen isotope     urban ecosystem     source    

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AGRICULTURAL GREEN DEVELOPMENT IN THE ERHAI LAKE BASIN—THE WAY FORWARD

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 510-517 doi: 10.15302/J-FASE-2023524

Abstract: Series of restrictions and regulations have been implemented to protect the surface water quality.

Keywords： agriculture     farmer income     nitrogen     phosphorus     water pollution    

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Approaches to achieve high grain yield and high resource use efficiency in rice

Jianchang YANG

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 2,   Pages 115-123 doi: 10.15302/J-FASE-2015055

Abstract: Breeding nitrogen efficient cultivars without sacrificing rice yield potential, improving grain fillgrowing season, and non-flooded straw mulching cultivation, could substantially increase grain yield and waterFurther research is needed to understand synergistic interaction between water and N on crop and soil

Keywords： rice     nitrogen-efficient cultivar     grain fill     harvest index     nitrogen use efficiency     water use efficiency    

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Analysis of Medium- and Long-term Coupling Effect of Energy- and Water-Saving Policies in Urban and Rural

Liu Gengyuan, Hu Junmei, Yang Zhifeng

Strategic Study of CAE 2019, Volume 21, Issue 5,   Pages 120-129 doi: 10.15302/J-SSCAE-2019.05.007

Abstract:

An energy-water coupling model is established in this paper based onlong-range energy alternatives planning (LEAP)
and water evaluation and planning (WEAP), scenariosare then designed to explore the energy- and water-saving effects of different
policies in Beijingin the future and their coupling effects, and sensitivity analysis of the results is also conducted.coupling sectors.

Keywords： urban and rural areas in Beijing     energy and water-saving     policy coupling analysis    

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Centrifuge model test and field measurement analysis for foundation pit with confined water

Chunlin DING , Xiaohong MENG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 299-304 doi: 10.1007/s11709-009-0035-0

Abstract: centrifuge test was developed for the seepage field and stress field of a foundation pit with confined waterresponse of the ground and retaining structure during dewatering and excavation for the pit with confined water, which provides a reliable basis for the design and construction of the pit with confined water.

Keywords： foundation pit with confined water     centrifuge model test     seepage-stress coupling field     similarity relation    

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Microdamage study of granite under thermomechanical coupling based on the particle flow code

Frontiers of Structural and Civil Engineering   Pages 1413-1427 doi: 10.1007/s11709-023-0953-2

Abstract: The thermomechanical coupling of rocks refers to the interaction between the mechanical and thermodynamicThe study of this coupling interaction is essential for understanding the mechanical and thermodynamicA series of numerical thermomechanical coupling tests are then conducted to calibrate the micro-parameters

Keywords： thermomechanical coupling effect     granite     improved linear parallel bond model     thermal property     particle    

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Preparation and application of a phosphorous free and non-nitrogen scale inhibitor in industrial coolingwater systems

Guangqing LIU,Mengwei XUE,Jingyi HUANG,Huchuan WANG,Yuming ZHOU,Qingzhao YAO,Lei LING,Ke CAO,Yahui LIU,Yunyun BU,Yiyi CHEN,Wendao WU,Wei SUN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 545-553 doi: 10.1007/s11783-014-0657-x

Abstract: anti-scale property of the AA-APEL toward CaCO , zinc (II) and iron (III) in the artificial cooling waterpolyethylene glycol (PEG) are the fundamental impetus to restrain the formation of the scale in cooling water

Keywords： phosphorous free     calcium carbonate     stabilize zinc (II)     disperse iron (III)     cooling water    

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Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 78-98 doi: 10.1007/s11709-022-0936-8

Abstract: Instead of applying the concept of adiabatic surface temperature (AST) to achieve fluid–structure coupling

Keywords： CFD–FEM coupling     steel beam     wind     ceiling jet     numerical heat transfer    

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Title Author Date Type Operation

The Model of Water and Nitrogen Coupling in Winter Wheat Yield

Zhai Bingnian,Li Shengxiu

Journal Article

Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloomcontrol in reclaimed water landscape

Journal Article

IMPROVING NITROGEN SAFETY IN CHINA: NITROGEN FLOWS, POLLUTION AND CONTROL

Journal Article

CRITICAL PROCESSES AND MAJOR FACTORS THAT DRIVE NITROGEN TRANSPORT FROM FARMLAND TO SURFACE WATER BODIES

Journal Article

Effects of mulching for water conservation on soil carbon, nitrogen and biological properties

Xiaomin PI, Tongxun ZHANG, Benhua SUN, Quanhong CUI, Yun GUO, Mingxia GAO, Hao FENG, David W. HOPKINS

Journal Article

Boron and nitrogen co-doped porous carbon derived from sodium alginate enhanced capacitive deionizationfor water purification

Journal Article

Improved nitrogen removal in dual-contaminated surface water by photocatalysis

Yongming ZHANG, Rong YAN, Zhen ZOU, Jiewei WANG, Bruce E. RITTMANN

Journal Article

Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Journal Article

AGRICULTURAL GREEN DEVELOPMENT IN THE ERHAI LAKE BASIN—THE WAY FORWARD

Journal Article

Approaches to achieve high grain yield and high resource use efficiency in rice

Jianchang YANG

Journal Article

Analysis of Medium- and Long-term Coupling Effect of Energy- and Water-Saving Policies in Urban and Rural

Liu Gengyuan, Hu Junmei, Yang Zhifeng

Journal Article

Centrifuge model test and field measurement analysis for foundation pit with confined water

Chunlin DING , Xiaohong MENG ,

Journal Article

Microdamage study of granite under thermomechanical coupling based on the particle flow code

Journal Article

Preparation and application of a phosphorous free and non-nitrogen scale inhibitor in industrial coolingwater systems

Guangqing LIU,Mengwei XUE,Jingyi HUANG,Huchuan WANG,Yuming ZHOU,Qingzhao YAO,Lei LING,Ke CAO,Yahui LIU,Yunyun BU,Yiyi CHEN,Wendao WU,Wei SUN

Journal Article

Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model

Journal Article