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Effects of the sand content of muddy water content on one-dimensional vertical infiltration characteristics and dense layer formation characteristics

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 172-179页

作者： Shouxuan Kang liangjun fei Yun Zhong Lihua Liu State Key Laboratory of Eco-hydraulics in Northwest Arid Region Xi’an University of TechnologyXi’an 710048China Institute of Water Resources and Hydro-electric Engineering Xi’an University of TechnologyXi’an 710048China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002HubeiChina School of Water Conservancy and Hydroelectric Power Hebei University of EngineeringHandan 056038HebeiChina

Muddy water irrigation,an effective water-saving irrigation method,has been widely used in the Yellow River Basin in China.To investigate the effect of sand content on water infiltration and dense layer formation under one-dimensional vertical infiltration of muddy water,muddy water infiltration experiments were performed in the laboratory,and five sand contents of muddy water(S=0%,3%,6%,9%,and 12%)were used.Models were established to describe the relationship between the cumulative infiltration amount[I(t)]and the infiltration duration(t);the relationship among the migration distance of the wetting front(Z),S,and t;the thickness of the sedimentary layer[H(t)];and the relationship between S and t.The results revealed that I(t)and Z decreased significantly with the increase of sand contents,while H(t)increased significantly with the increase of sand contents.I(t)and Z were in the range of 7 cm and 20 cm for each treatment,respectively.The variation in I(t)with t fitted Kostiakov and Philip models,and the coefficients of determination were all greater than 0.99.With the increase in S,the infiltration coefficient gradually decreased,the infiltration index gradually increased,and the sorptivity gradually decreased.The particle composition of the sedimentary layer was similar to that of the argillaceous sediment,and the content of particles with a size of less than 2 mm in the sedimentary layer was lower than that of the argillaceous sediment.Compared with the original soil,the content of particles with a size of less than 0.05 mm and physical clay particles(diameter less than 0.01 mm)in the soil with an infiltration depth of 0-2 cm increased.The retention layer was from the topsoil to the infiltration depth of approximately 2 cm.This study can provide a scientific basis for further research on soil infiltration mechanisms under muddy water.

关键词： muddy water sand content dense layer cumulative infiltration wetting front transport deposit layer thickness

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膜孔灌自由入渗条件下VG模型参数的敏感性分析

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灌溉排水学报 2024年第5期43卷 55-62页

作者：樊倩雯费良军刘念西安理工大学西北旱区生态水利国家重点实验室西安710048 榆林市榆阳区水旱灾害防治中心陕西榆林719000

【目的】探究膜孔灌自由入渗条件下VG模型参数敏感性。【方法】基于HYDRUS-2D软件,采用单因子扰动分析方法,研究van Genuchten方程中α、n、θr对膜孔灌单点源自由入渗特性的影响。【结果】①单位膜孔面积累积入渗量与α负相关,与n正相... 详细信息

【目的】探究膜孔灌自由入渗条件下VG模型参数敏感性。【方法】基于HYDRUS-2D软件,采用单因子扰动分析方法,研究van Genuchten方程中α、n、θr对膜孔灌单点源自由入渗特性的影响。【结果】①单位膜孔面积累积入渗量与α负相关,与n正相关,θr对单位膜孔面积累积入渗量无影响。水平湿润锋运移距离与α负相关,θr对其无影响。垂直湿润锋运移距离与θr负相关,与n正相关。入渗结束时高含水率湿润体面积与θr、n正相关,n的扰动对高含水率湿润体面积影响最大。②单位膜孔面积累积入渗量的相对灵敏度随α增大而逐渐减小,α的正扰动对单位膜孔面积累积入渗量的影响程度弱于负扰动。α负扰动时,水平湿润锋运移距离的相对灵敏度随扰动幅度的增大而逐渐增大;α正扰动时,水平湿润锋运移距离的相对灵敏度随扰动幅度的增大而逐渐减小。③n负扰动时,单位膜孔面积累积入渗量与垂直湿润锋运移距离的相对灵敏度均随扰动幅度的增大呈先增加后减小的趋势;n正扰动时,单位膜孔面积累积入渗量的相对灵敏度随扰动幅度的增大呈先减小后增加再减小的趋势。【结论】n发生扰动对膜孔灌自由入渗特性影响最明显,θr发生扰动对入渗特性影响最小。

关键词：模型膜孔灌单点源入渗特性参数

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Water and nitrogen input optimization for jujube trees under surge root irrigation based on weighted grey correlation model

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International Journal of Agricultural and Biological Engineering 2019年第3期12卷 45-51页

作者： Zhiguang Dai liangjun fei Yun Zhong Deliang Huang Institute of Water Resources Research Xi’an University of TechnologyXi’an 710048China School of Hydraulic and Ecological Engineering Nanchang Institute of TechnologyNanchang 30099China

In order to obtain the optimal input of water and nitrogen(W&N)suitable for the jujube trees in Northern Shaanxi,12 treatments had been set in the demonstration base of micro-irrigation jujube tree of Mizhi County in 2014-2015 through field experiment of jujube trees under surge root irrigation(SRI),in which three soil moisture levels(high moisture level W1:60%-85%θ,middle moisture level W2:50%-75%θ,low moisture level W3:40%-65%θ)and four nitrogen input levels(high nitrogen F75:0.75 kg/plant,middle nitrogen F50:0.50 kg/plant,low nitrogen F25:0.25 kg/plant,no nitrogen F0:0.00 kg/plant)were set.Through analyzing the effects of different W&N inputs on the yield,net income(NI)and W&N utilization efficiency(WUE and NUE)of jujube trees and establishing a weighted grey correlation model,the optimization of W&N input for jujube trees could be achieved under SRI.Results showed that different W&N inputs had significant influences on yield,NI,WUE and NUE.Along with the increase of soil moisture content,the yield and NUE increased,while WUE decreased gradually,and the NI had the tendency to increase first and then decrease.Along with the increase of nitrogen input,the yield,NI and WUE had the tendency to increase first and then decrease while the NUE decreased significantly,and the yield,NI,WUE and NUE could not reach the maximum at the same time.Through the study on the grey correlation model of jujube tree’s comprehensive benefit based on the yield,NI,WUE and NUE,results showed the comprehensive benefit of jujube trees was significantly different when W&N input was different,and the gray correlation degree of W2F25 treatment was the highest in two years,which means that the soil moisture content of 50%-75%θand nitrogen input of 0.25 kg/plant was the optimal W&N input for jujube trees under SRI in Northern Shaanxi area.

关键词： surge root irrigation input of water and nitrogen jujube tree comprehensive benefit grey correlation model

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Effects of initial soil moisture content on soil water and nitrogen transport under muddy water film hole infiltration

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International Journal of Agricultural and Biological Engineering 2021年第4期14卷 182-189页

作者： Lihua Liu liangjun fei Lin Chen Kun Hao Quanju Zhang State Key Laboratory of Eco-hydraulics in Northwest Arid Region Xi’an University of TechnologyXi’an 710048China Institute of Water Resources and Hydro-electric Engineering Xi’an University of TechnologyXi’an 710048China

Film hole irrigation has been widely adopted as an effective water-saving irrigation technology in the arid and semiarid areas of China.To investigate the effects of initial soil moisture content(θ0)on soil water and nitrogen transport characteristics under muddy water film hole infiltration,the laboratory experiments were conducted with muddy water film hole infiltration,using five initial soil moisture content treatments.The models for describing the relationships between the cumulative infiltration(I(t))and infiltration duration(t);the relationship among the horizontal and vertical migration distances of the wetting front(Fx,Fz),θ0 and t,were established.The results showed that the initial soil moisture content had a significant effect on I(t),Fx,Fz and moisture content distribution in the wetted body.The change of I(t)over t conformed to Kostiakov model.With the increase ofθ0,the infiltration coefficient(K)gradually decreased.NO-3-N was mainly distributed in the range of the wetting radius of 15 cm,while NH+4-N was mainly distributed in the range of the wetting radius of 8 cm.This study can provide a theoretical basis and technical support for film hole irrigation.

关键词： film hole irrigation muddy water initial soil moisture content water and nitrogen transport water redistribution

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多因素影响下膜孔灌单向交汇入渗特性

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排灌机械工程学报 2024年第6期42卷 633-640页

作者：樊倩雯费良军康守旋彭有亮孙云翔刘念西安理工大学西北旱区生态水利国家重点实验室陕西西安710048 榆林市榆阳区水旱灾害防治中心陕西榆林719000

为研究膜孔直径、膜孔间距、土壤初始体积含水率、入渗水头4个因素对膜孔灌单向交汇入渗特性的影响,通过室内土箱入渗试验资料来验证HYDRUS-3D模拟膜孔灌单向交汇入渗过程的可靠性,用HYDRUS-3D模拟不同膜孔直径、膜孔间距、土壤初始体... 详细信息

为研究膜孔直径、膜孔间距、土壤初始体积含水率、入渗水头4个因素对膜孔灌单向交汇入渗特性的影响,通过室内土箱入渗试验资料来验证HYDRUS-3D模拟膜孔灌单向交汇入渗过程的可靠性,用HYDRUS-3D模拟不同膜孔直径、膜孔间距、土壤初始体积含水率、入渗水头条件下的单向交汇入渗过程,分析各因素耦合条件下单向交汇入渗规律,分别建立了各影响因素与单位膜孔面积累积入渗量、交汇时间、交汇面面积之间的经验模型.结果表明:4个因素对单位膜孔面积累积入渗量的影响程度从大到小依次为膜孔直径、土壤初始体积含水率、膜孔间距、入渗水头;对膜孔交汇入渗交汇发生时间的影响程度从大到小依次为膜孔间距、膜孔直径、土壤初始体积含水率、入渗水头;对入渗结束时交汇面湿润体面积的影响程度从大到小依次为膜孔直径、膜孔间距、土壤初始体积含水率、入渗水头.该研究结果可为确定最优膜孔灌技术要素组合提供理论依据.

关键词：膜孔灌 HYDRUS-3D 单向交汇多因素入渗特性

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Water and nitrogen transport characteristics of single-line interference infiltration under film hole irrigation with muddy water and fertilizer

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排灌机械工程学报 2022年第5期40卷 496-503页

作者： JIANG Ruirui fei liangjun KANG Shouxuan State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area Xi′an University of TechnologyXi′anShaanxi 710048China

Based on the experimental data,this study investigated the effect of sand content of muddy water on water and nitrogen transport characteristics of the single-line interference infiltration under film hole irrigation with muddy water and fertilizer.The relationship between the single-line interference infiltration parameters,the sand content,the wetting front movement distances,and the sand content were all established.The model of the cumulative infiltration volume of per unit film pore area,the vertical and horizontal wetting front movement distance of the free surface,and the wetting front movement distance of the interference center with sand content and infiltration time were proposed.Reveal the law of the change of soil water content and the distribution of NO_(3)^(-)-N content based on different muddy water sand content.The results indicate that at the same infiltration time,as the muddy water sand content increases,the cumulative infiltration volume per unit pore area decreases.The infiltration index of the free infiltration and the single-line interference vary little when the sand content increases,mainly are around 0.64 and 0.58.The relationship between infiltration parameters a,b and the sand content is linear function.At the same location,the more the sand content,the smaller the wetting front movement distance in free surface and the single-line interference surface,the less the NO_(3)^(-)-N content.

关键词： film hole irrigation single-line interference infiltration muddy water fertilizer sand content NO_(3)^(-)-N content

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夹砂层位置对膜孔灌氮肥自由入渗特性的影响

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宁夏工程技术 2024年第1期23卷 35-41,47页

作者：陈琳艾南竹费良军王亮青岛引黄济青水务集团有限公司山东青岛266000 青岛理工大学环境与市政工程学院山东青岛266555 西安理工大学水利水电学院陕西西安710048

为了研究夹砂层位置对层状土膜孔灌氮肥自由入渗特性的影响,选用粉壤土和砂壤土,设置3个夹砂层位置进行膜孔灌自由入渗试验。结果表明,在夹砂层位置为距表层土5~10 cm,10~15 cm,15~20 cm的3种处理中,各处理的累积入渗量、湿润锋运移规... 详细信息

为了研究夹砂层位置对层状土膜孔灌氮肥自由入渗特性的影响,选用粉壤土和砂壤土,设置3个夹砂层位置进行膜孔灌自由入渗试验。结果表明,在夹砂层位置为距表层土5~10 cm,10~15 cm,15~20 cm的3种处理中,各处理的累积入渗量、湿润锋运移规律、湿润体内含水量、铵态氮和硝态氮分布规律均有所不同。夹砂层的位置越靠近表层,减渗效果越大,累积入渗量越小,水平方向湿润锋面运移距离越大;入渗过程可分为2个阶段,第1阶段是水分运动到土砂交界面之前,第2阶段是水分运动到土砂交界面后,利用Philip和Kostiakov入渗模型来描述累积入渗量与入渗历时之间的关系,模型拟合结果较好;层状土的土壤含水量分布具有不连续性,其铵态氮和硝态氮分布规律受夹砂层位置的影响较大。综上所述,夹砂层位置变化对膜孔灌氮肥自由入渗具有明显影响。

关键词：层状土夹砂层膜孔灌自由入渗铵态氮硝态氮

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Effects of water and nitrogen conditions under surge-root irrigation on growth and yield of apple trees

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排灌机械工程学报 2023年第2期41卷 179-186页

作者： YIN Yongle fei liangjun LI Zhe LIU Teng LI Zhongjie HAO Kun PENG Youliang Institute of Water Resources and Hydroelectric Engineering Xi′an University of TechnologyXi′anShaanxi 710048China Shaanxi Provincial Land Engineering Construction Group Land Survey Planning and Design InstituteXi′anShaanxi 710064China Rural Revitalization Planning and Development Guidance Center of Yulin YulinShaanxi 719000China

In order to explore the effects of different irrigation and nitrogen application on growth cha-racteristics and yield of apple trees under surge-root irrigation in mountainous areas of northern Shaanxi, field experiments were carried out with different apple trees. Three irrigation levels were applied: 85%-100%(H1), 70%-85%(H2) and 55%-70%(H3) of the field water capacity, respectively, and three nitrogen levels were N1(360 g/plant), N2(240 g/plant) and N3(120 g/plant). The results show that irrigation and nitrogen application has significant effects on new shoot length, flowering and fruit setting, fruit diameter, fruit volume and yield of apple. The leaf area index(LAI) shows a single trend during the growth period, and the peak value appears in the middle of July. Under the same irrigation level, compared with N3, N1 increases in yield, new shoot length, LAI, transverse diameter, longitudinal diameter, volume, flowering and fruit setting by 17.91%, 28.31%, 18.75%, 11.38%, 10.13%, 36.60%, 20.92% and 5.19%, respectively, while N2 also increases by 12.40%, 15.63%, 4.86%, 5.40%, 5.11%, 17.01%, 26.17% and 13.74%, respectively. The rate of flowering and fruit setting decreases with the increase of nitrogen application. Under the same nitrogen level, compared with H3, H1 increases in yield, new shoot length, LAI, transverse diameter, longitudinal diameter, volume, flowering and fruit setting by 34.65%, 15.49%, 30.77%, 3.93%, 4.95%, 12.86%, 33.15% and 28.62%, respectively, while H2 also increases by 33.67%, 16.42%, 67.52%, 3.81%, 2.97%, 11.57%, 43.45% and 27.26%, respectively. The rate of flowering and fruit setting decreases first and then increases with the increase of irrigation amount. Compared with H3N3, the yield of other treatments increases by 2.69%-52.20%, while H2N1 treatment has the highest yield(26 852.55 kg/ha). Considering from the point of view of promoting growth and increasing yield, the best water and nitrogen combination mode of mountain apple in northern Shaanxi is medium water deficit irrigation an

关键词： mountain apple surge-root irrigation irrigation nitrogen growth yield

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Comparative Study on Constitutive Models to Predict Flow Stress of Fe-Cr-Ni Preform Reinforced Al-Si-Cu-Ni-Mg Composite

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Journal of Wuhan University of Technology(Materials Science) 2017年第3期32卷 666-676页

作者：周灵展 YANG Liming PENG Yinjiang fei liangjun ZHU Xiurong Faculty of Mechanical Engineering and Mechanics Ningbo University Ningbo 315211 China Ningbo Branch of China Ordnance Academy Ningbo 315103 China

The isothermal compression tests were carried out on Gleeble-3500 thermal-mechanical simulation machine in a temperature range of 298-473 K and strain rate range of 0.001-10 s^-1. The experimental results show that the flow stress data are negatively correlated with temperature for temperature softening, and the strain rates sensitivity of this composite increases with elevating temperature. Based on the experimental data, Johnson-Cook, modified Johnson-Cook and Arrhenius constitutive models were established. The accuracy of these three constitutive models was analyzed and compared. The results show that the values predicted by Johnson-Cook model could not agree well with the experimental values. The prediction accuracy of Arrhenius model is higher than that of Johnson-Cook model but lower than that of the Modified Johnson-Cook model.

关键词： Fe-Cr-Ni porous preform composite isothermal compression constitutive model

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Effects of arrangement of surge-root irrigation emitters on growth,yield and water use efficiency of apple trees

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排灌机械工程学报 2020年第7期38卷 713-719页

作者： LI Zhongjie fei liangjun HAO Kun LIU Teng CHEN Nanshu ZHANG Quanju HUANG Deliang State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area Xi′an University of TechnologyXi′anShaanxi 710048China

Six-year old apple trees were selected for field experiment.The objective of this study was to obtain the reasonable arrangement of surge-root irrigation emitters in apple orchards.There were three factors:the buried depth H(25,40,55 cm),the horizontal distance L(30,40,60 cm)between the emitters and the trunk of the experimental tree,and the number of the irrigation emitters N(1,2,4).The effect of the arrangement of surge-root irrigation emitters on the growth,yield and irrigation water use efficiency(IWUE)of apple trees were studied in Northern Shaanxi where the irrigation quota takes 60%-75%of the field water capacity.The results showed that the arrangement of emitters for surge-root irrigation had a significant effect on apple tree yield and IWUE,especially,the yield and IWUE reached 28388.17 kg/hm2 and 16.83 kg/m3 in treatment T3,respectively.At the same L and N levels(T1,T2,and T3),the yield and IWUE in treatment T3 were the highest,and the yields in treatments T1 and T2 were decreased by 26.22%and 31.48%,while IWUE is reduced by14.02%and 18.12%compared with T3,respectively.At the same H and N levels(T3,T4,and T5),the yield and IWUE of apple trees were decreased with increasing L level.Especially,when L was 30 cm(T3),the yield and IWUE were the highest.The same L and H levels(T3,T6,and T7)could promote the growth of apple trees when N was 2(T3).Compared with treatment T3,it was found that the increment of new shoots was decreased by 8.07%-18.71%,and the fruit diameter was decreased by 5.41%-9.11%.Therefore,two emitters should be arranged symmetrically on both sides of an apple tree,each was buried at a 40 cm depth and 30 cm away from the trunk of the tree to effectively improve the yield and IWUE of the apple tree in mountainous areas in Northern Shaanxi.

关键词： irrigation emitters surge-root irrigation apple trees arrangement modes yield irrigation water use efficiency

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