检索结果-南通市图书馆

Combining field data and modeling to better understand maize growth response to phosphorus(P) fertilizer application and soil P dynamics in calcareous soils

引用

Journal of Integrative Agriculture 2024年第3期23卷 1006-1021页

作者： Weina Zhang Zhigan Zhao Di He Junhe Liu Haigang Li enli wang School of Biological and Food Processing Engineering Huanghuai UniversityZhumadian 463000China Key Laboratory of Plant-Soil Interactions Ministry of Education/College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources/Key Laboratory of Grassland Resource(IMAU) Ministry of Education/College of GrasslandResources and EnvironmentInner Mongolia Agricultural UniversityHohhot 010018China CSIRO Agriculture and Food CanberraACT 2601Australia

We used field experimental data to evaluate the ability of the agricultural production system model (APSIM) to simulate soil P availability,maize biomass and grain yield in response to P fertilizer applications on a fluvo-aquic soil in the North China *** and soil data from a 2-year experiment with three P fertilizer application rates(0,75 and 300 kg P_(2)O_(5) ha^(–1)) were used to calibrate the *** analysis was carried out to investigate the influence of APSIM SoilP parameters on the simulated P availability in soil and maize *** and soil P parameters were then derived by matching or relating the simulation results to observed crop biomass,yield,P uptake and Olsen-P in *** re-parameterized model was further validated against 2 years of independent data at the same *** re-parameterized model enabled good simulation of the maize leaf area index (LAI),biomass,grain yield,P uptake,and grain P content in response to different levels of P additions against both the calibration and validation *** results showed that APSIM needs to be re-parameterized for simulation of maize LAI dynamics through modification of leaf size curve and a reduction in the rate of leaf senescence for modern staygreen maize cultivars in *** P concentration limits (maximum and minimum P concentrations in organs)at different stages also need to be *** results further showed a curvilinear relationship between the measured Olsen-P concentration and simulated labile P content,which could facilitate the initialization of APSIM P pools in the NCP with Olsen-P measurements in future *** remains difficult to parameterize the APSIM SoilP module due to the conceptual nature of the pools and simplified conceptualization of key P transformation processes.A fundamental understanding still needs to be developed for modelling and predicting the fate of applied P fertilizers in soils with contrasting physical and chemical characteristics.

关键词： maize phosphorus availability modeling APSIM maize APSIM SoilP

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Contrasting patterns of accumulation,partitioning,and remobilization of biomass and phosphorus in a maize cultivar

引用

The Crop Journal 2022年第1期10卷 254-261页

作者： Weina Zhang Haigang Li Junling Zhang Jianbo Shen Hamish Brown enli wang Key Laboratory of Plant-Soil Interactions Ministry of EducationCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China School of Biological and Food Processing Engineering Huanghuai UniversityZhumadian 463000HenanChina Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources Key Laboratory of Grassland Resource(IMAU)Ministry of EducationCollege of GrasslandResources and EnvironmentInner Mongolia Agricultural UniversityHohhot 010018Inner MongoliaChina The New Zealand Institute for Plant&Food Research Limited Private Bag 4704ChristchurchNew Zealand CSIRO Agriculture and Food GPO Box 1700CanberraACT 2601Australia

Maize growth,organ development,and yield formation are highly controlled by the manner in which the plant captures,partition,and remobilizes biomass and phosphorus(P).Better understanding of biomass and P accumulation,partition,and remobilization processes will improve modeling of crop resource ***,there is still a lack of detailed data to parameterize the modeling of these processes,particula rly for modern maize cultivars.A two-year(2016 and 2017)field experiment with three P fertilization treatments(0(P0),75(P75),and 300(P300)kg P_(2)O_(5)ha^(-1))was conducted on a Fluvo-aquic soil(Quzhou,Hebei province,China)to collect data and quantify key processes for a representative modern maize cultivar(Zhengdan 958)widely grown in *** proportions of biomass and P partitioned into various maize organs were unaffected by P application *** 958 showed a much lower leaf-senescence rate than older cultivars,resulting in post-silking leaf photosynthesis being sufficient to meet grain biomass *** contrast,50%-85%of leaf P and 15%-50%of stem P accumulated pre-silking were remobilized into grain,in spite of the large proportion of post-silking P *** results are consistent with the theory that plants use resources according to the priority order of re-allocation from senescence followed by assimilation and uptake,with the re-translocation of reserves *** results also enabled us to estimate the threshold P concentrations of Zhengdan 958 for modeling crop P *** critical leaf P concentration for individual leaves was 0.25%-0.30%,with a corresponding specific leaf P(SLP)of 75-100 mg P m^(-2).The structural P concentration for leaf was 0.01%,corresponding to an SLP of 3.8 mg P m^(-2).The maximum P concentrations of leaves and stems were 0.33%and 0.29%.The residual P concentration for stems was 0.006%.

关键词： Biomass Phosphorus Partitioning Remobilization Individual leaves

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

ulti-azimuth three-component surface seismic modeling for viscoelastic cracked monoclinic media

引用

Applied Geophysics 2007年第1期4卷 16-24页

作者： wang enli Han Liguo wang Deli College of Geoexploration Science and Technology Jilin University Changchun 130026 China.

In this article, a method of high order, staggered grid, finite difference was used to model snapshots of seismic wave propagation and multi-azimuth surface seismic records in viscoelastic cracked monoclinic media. The modeling results clearly show the anisotropy caused by the crack fill material and the viscoelastic wave field through the monoclinic media. Summarizing the regularity of seismic records for different azimuths, this study is a significant attempt to understand the wave fields propagated in real media and to propose a more rational theoretical model for the future.

关键词： monoclinic anisotropy simulation variable azimuth finite difference.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhanced Electrochemical Properties and Optimized Li^(+)Transmission Pathways of PEO/LLZTO-Based Composite Electrolytes Modified by Supramolecular Combination

引用

Energy & Environmental Materials 2024年第1期7卷 238-246页

作者： Zhengyi Lu Lin Peng Yi Rong enli wang Ruhua Shi Hongxun Yang Yadong Xu Ruizhi Yang Chao Jin College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China Jiangsu Runchao Energy Storage Technology Co. LtdZhenjiang 212050China

Poly(ethylene oxide)(PEO)and Li_(6.75)La_(3)Zr_(1.75)Ta_(0.25)O_(12)(LLZTO)-based composite polymer electrolytes(CPEs)are considered one of the most promising solid electrolyte ***,agglomeration of LLZTO within PEO and lack of Li^(+)channels result in poor electrochemical ***,a functional supramolecular combination(CD-TFSI)consisting of activeβ-cyclodextrin(CD)supramolecular with self-assembled LiTFSI salt is selected as an interface modifier to coat LLZTO *** from vast H-bonds formed betweenβ-CD and PEO matrix and/or LLZTO,homogeneous dispersion and tight interface contact are ***,^(6)Li NMR spectra confirm a new Li^(+)transmission pathway from PEO matrix to LLZTO ceramic then to PEO matrix in the as-prepared PEO/LLZTO@CD-TFSI CPEs due to the typical cavity structure ofβ-*** a proof,the conductivity is increased from 5.3×10^(-4)S cm^(-1)to 8.7×10^(-4)S cm^(-1)at 60℃,the Li^(+)transference number is enhanced from 0.38 to 0.48,and the electrochemical stability window is extended to 5.1 V versus Li/Li^(+).Li‖LiFePO_(4)CR2032 coin full cells and pouch cells prove the practical application of the as-prepared PEO/LLZTO@CD-TFSI *** work offers a new strategy of interface modifying LLZTO fillers with functional supramolecular combination to optimize PEO/LLZTO CPEs for solid lithium batteries.

关键词： conductivity interfacial stability LLZTO fillers modification PEO matrix

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interaction of Genotype,Environment,and Management on Organ-Specific Critical Nitrogen Dilution Curve in Wheat

引用

Plant Phenomics 2023年第3期5卷 612-625页

作者： Bo Yao Xiaolong wang Yancheng wang Tianyang Ye enli wang Qiang Cao Xia Yao Yan Zhu Weixing Cao Xiaojun Liu Liang Tang National Engineering and Technology Center for Information Agriculture Engineering Research Center for Smart AgricultureMinistry of EducationKey Laboratory for Crop System Analysis and Decision MakingMinistry of Agriculture and Rural AffairsJiangsu Key Laboratory for Information AgricultureJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjing 210095JiangsuPR China CSIRO Agriculture and Food Cluniess Ross StreetBlack MountainACTAustralia

The organ-specific critical nitrogen(N_(c))dilution curves are widely thought to represent a new approach for crop nitrogen(N)nutrition diagnosis,N management,and crop *** N_(c) dilution curve can be described by a power function(N_(c)=A_(1)·W^(−A2)),while parameters A_(1) and A_(2) control the starting point and *** study aimed to investigate the uncertainty and drivers of organ-specific curves under different *** using hierarchical Bayesian theory,parameters A_(1) and A_(2) of the organ-specific N_(c) dilution curves for wheat were derived and evaluated under 14 different genotype×environment×management(G×E×M)N fertilizer *** results show that parameters A_(1) and A_(2) are highly *** the variation of parameter A_(1) was less than that of A_(2),the values of both parameters can change significantly in response to G×E×*** nutrition index(NNI)calculated using organ-specific N_(c) is in general consistent with NNI estimated with overall shoot N_(c),indicating that a simple organ-specific N_(c) dilution curve may be used for wheat N diagnosis to assist N ***,the significant differences in organ-specific N_(c) dilution curves across G×E×M conditions imply potential errors in N_(c) and crop N demand estimated using a general N_(c) dilution curve in crop models,highlighting a clear need for improvement in N_(c) calculations in such *** results provide new insights into how to improve modeling of crop nitrogen–biomass relations and N management practices under G×E×M.

关键词： Wheat diagnosis starting

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于APSIM模型的灌溉降低冬小麦产量风险研究

引用

农业工程学报 2009年第10期25卷 35-44页

作者：李艳薛昌颖杨晓光王靖刘园 enli wang 中国农业大学资源与环境学院北京100193 河南省气象科学研究所郑州450003 北京华风气象影视信息集团有限责任公司北京100081 澳大利亚联邦科工组织土地与水研究所澳大利亚堪培拉GPO Box1666

华北平原是我国冬小麦主产区,干旱是影响该地区冬小麦产量稳定的最主要的灾害之一。进行产量风险评估以及如何通过灌溉降低干旱产量风险对于该地区冬小麦稳产高产具有重要的现实意义。该文利用澳大利亚的APSIM农业生产系统模拟模型,以... 详细信息

华北平原是我国冬小麦主产区,干旱是影响该地区冬小麦产量稳定的最主要的灾害之一。进行产量风险评估以及如何通过灌溉降低干旱产量风险对于该地区冬小麦稳产高产具有重要的现实意义。该文利用澳大利亚的APSIM农业生产系统模拟模型,以华北平原北京和山东禹城为例,分析了不同降水年型条件下冬小麦的产量风险;通过不同灌溉方案的设计和模拟,分析了不同的灌溉方案在各种年型条件下对降低冬小麦产量风险的作用。结果表明:北京和禹城地区冬小麦生育期内绝大部分年份降水不能满足作物的需水,严重缺水年型出现的频率均在30%左右,两地该年型的平均产量仅为2445和2466kg/hm2,产量风险较高。灌溉对于降低产量风险具有明显的作用,但需根据不同的缺水年型选择适宜的灌溉方案。在兼顾冬小麦稳产高产和提高水分利用效率的前提下,严重和中度缺水年型进行3次补充灌溉,分别为底墒水、拔节水和开花水,而在轻度缺水年型条件下,底墒水和拔节水两次灌溉即可大大降低干旱带来的产量风险,灌水定额为50～70mm,且随缺水程度的降低和灌溉次数的增加,可以适当减小灌水定额。

关键词：作物灌溉风险分析模型 APSIM 冬小麦

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Using a systems modeling approach to improve soil management and soil quality

引用

Frontiers of Agricultural Science and Engineering 2020年第3期7卷 289-295页

作者： enli wang Di HE Zhigan ZHAO Chris J.SMITH Ben C.T.MACDONALD CSIRO Agriculture and Food CanberraACT 2601Australia

Soils provide the structural support, water andnutrients for plants in nature and are considered to be thefoundation of agriculture production. Improving soilquality and soil health has been advocated as the goal ofsoil management toward sustainable agricultural intensifi-cation. There have been renewed efforts to define andquantify soil quality and soil health but establishing aconsensus on the key indicators remains difficult. It isargued that such difficulties are due to the former ways ofthinking in soil management which largely focus on soilproperties alone. A systems approach that treats soils as akey component of agricultural production systems ispromoted. It is argued that soil quality must be quantifiedin terms of crop productivity and impacts on ecosystemsservices that are also strongly driven by climate andmanagement interventions. A systems modeling approachcaptures the interactions among climate, soil, crops andmanagement, and their impacts on system performance,thus helping to quantify the value and quality of ***, three examples are presented to demonstrate this. Inthis systems context, soil management must be an integralpart of systems management practices that also includemanaging the crops and cropping systems under specificclimatic conditions, with cognizance of future climatechange.

关键词： APSIM available water capacity nitrogen management soil functional properties soil health soil-plant modeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Testing a bell-shaped function for estimation of fully expanded leaf area in modern maize under potential production conditions

引用

The Crop Journal 2018年第5期6卷 527-537页

作者： Xiaoxing Zhen Hui Shao Weina Zhang Weige Huo William David Batchelor Peng Hou enli wang Guohua Mi Yuxin Miao Haigang Li Fusuo Zhang College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China Biosystems Engineering Department Auburn UniversityAuburnAL 36849USA Institute of Crop Sciences Chinese Academy of Agricultural SciencesKey Laboratory of Crop Physiology and EcologyMinistry of AgricultureBeijing 100081China CSIRO Agriculture Flagship CanberraACT 2601Australia Department of Soil Water and ClimateMinnesota UniversitySt.PaulMN 55108USA

Accurate leaf area simulation is critical for the performance of crop growth models. Area of fully expanded individual leaves of maize hybrids released before 1995 (defined as old hybrids) has been simulated using a bell-shaped function (BSF) and the relationship between its parameters and total leaf number (TLNO). However, modern high-yielding maize hybrids show different canopy architectures. The function parameters calibrated for old hybrids will not accurately represent modern hybrids. In this study, we evaluated these functions using a dataset including old and modern hybrids that have been widely planted in China in recent years. Maximum individual leaf area (Y_0) and corresponding leaf position (X_0) were not predicted well by TLNO (R^2= 0.56 and R^2= 0.70) for modern hybrids. Using recalibrated shape parameters a and b with values of Y_0 and X_0 for modern hybrids, the BSF accurately predicted individual leaf area (R^2= 0.95–0.99) and total leaf area of modern hybrids (R^2= 0.98). The results show that the BSF is still a robust way to predict the fully expanded leaf area of maize when parameters a and b are modified and Y_0 and X_0 are fitted. Breeding programs have led to increases in TLNO of maize but have not altered Y_0 and X_0, reducing the correlation between Y_0, X_0, and TLNO. For modern hybrids, the values of Y_0 and X_0 are hybrid-specific. Modern hybrids tend to have less-negative values of parameter a and more-positive values of parameter b in the leaf profile. Growth conditions, such as plant density and environmental conditions, also affect the fully expanded leaf area but were not considered in the original published equations. Thus, further research is needed to accurately estimate values of Y_0 and X_0 of individual modern hybrids to improve simulation of maize leaf area in crop growth models.

关键词： Hybrids Leaf area Leaf number Plant density Environmental conditions

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Healthy soils for sustainable food production and environmental quality

引用

Frontiers of Agricultural Science and Engineering 2020年第3期7卷 347-355页

作者： Xia LIANG Jizheng HE Fusuo ZHANG Qirong SHEN Jinshui WU lain MYOUNG Anthony GO'DONNELL Ligang wang enli wang Julian HILL Deli CHEN School of Agriculture and Food The University of MelbourneVictoria 3010Australia College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant Soil Interactions(Ministry of Education)China Agricultural UniversityBeijjng 100193China Jiangsu Provincial Key Laboratory for Organic Solid Waste Utilization National Engineering Research Center for Organic-Based FertilizersJiangsu Collaborative Innovation Center for Solid Organic Waste Resource UtilizationCollege of Resources and Environmental ScienceNanjing Agricultural UniversityNanjing 210095China Key Laboratory of Agro-Ecological Processes in Subtropical Regions Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China School of Life and Environmental Sciences and Sydney Institute of Agriculture Faculty of ScienceThe University of SydneyCamperdownNSW 2006Australia University of Western Australia CrawleyWA 6009Australia Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081China CSIRO Agriculture and Food CanberraACT 2601Australia Ternes Scientific UpweyVictoria 3158Australia

Soil is the foundation for sustainable foodproduction and environmental protection. Created byunsustainable land management practices and a range ofsocial, economic and environmental drivers, soil degrada-tion and pollution have been an ongoing threat tointernational food security and environmental *** degradation and pollution assessments are, however,often focused on the soil itself with little scope to devisenew soil management approaches that match foodproduction systems and/or *** study draws lessons from an Australia-China JointResearch Center Program, Healthy Soils for SustainableFood Production and Environmental Quality: a researchplatform that has brought together multi-disciplinaryapproaches fromworld-renowned universitiesandresearch organizations in Australia and China. To thisend, a framework is presented for future soil managementin a new way that combines excellence in research,industry and policymakers in a partnership that will ensurenot only the right focus of the research but also that high-quality outputs will be transferable to industry and end-users.

关键词： Australia China environmental quality food production healthy soils

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An overview of the use of plastic-film mulching in China to increase crop yield and water-use efficiency

引用

National Science Review 2020年第10期7卷 1523-1526页

作者： Dongbao Sun Haigang Li enli wang Wenqing He Weiping Hao Changrong Yan Yuzhong Li Xurong Mei Yanqing Zhang Zhanxiang Sun Zhikuan Jia Huaiping Zhou Tinglu Fan Xucheng Zhang Qin Liu Fengju wang Chaochun Zhang Jianbo Shen Qingsuo wang Fusuo Zhang Centre for Resources Environment and Food Security China Agricultural University Key Laboratory of Dryland Agriculture of Ministry of Education Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences CSIRO Agriculture Flagship Inner Mongolia key laboratory of soil quality and nutrient resources Key laboratory of grassland resource (IMAU) Ministry of EducationCollege of Grassland Resources and EnvironmentInner Mongolia Agricultural University Chinese Academy of Agricultural Sciences Liaoning Academy of Agricultural Sciences College of Agronomy (Academy of Agricultural Sciences) Northwest A & F University Institute of Agricultural Environment and Resource Shanxi Academy of Agricultural Sciences Institute of Dryland Agricultural Research Gansu Academy of Agricultural Sciences Institute of Crop Science Chinese Academy of Agricultural Sciences

Since 1990, crop yields have stagnated in many parts of the world, posing a significant challenge to global food security [1].As such, innovative solutions are needed to increase the resource-use efficiency of cropping systems to produce more grains per unit area. In China, which is home to one-fifth of the global population,

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：