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Research on the Cultivation of Innovative Ability and Comprehensive Quality of International Translation Talent Serving National Strategy
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作者 郭思琪 赵丹 《海外英语》 2021年第8期265-266,共2页
Based on the value orientation of international translation talent as well as the present situation of personnel training in the context of national development strategy,this article offers a profound analysis for the... Based on the value orientation of international translation talent as well as the present situation of personnel training in the context of national development strategy,this article offers a profound analysis for the talent on the training methods of innovative ability and comprehensive quality.Innovative talent that has a strong sense of social responsibility as well as the ability of directly participating in international activities should be fostered,so as to meet the need for economic developments and to better serve national economic construction. 展开更多
关键词 International translation talent innovative ability and comprehensive quality ways of cultivating
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Construction of PE Guiding Framework based on the Enhancement of the Comprehensive Quality
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作者 Yang Shen Hui Ma 《International Journal of Technology Management》 2017年第2期66-69,共4页
College physical education located at the last stage of school physical education, it is not only related to comprehensively promote and enhance the overall quality of students’ physical and mental quality education,... College physical education located at the last stage of school physical education, it is not only related to comprehensively promote and enhance the overall quality of students’ physical and mental quality education, but also related to the quality of higher education and the implementation of personnel training ' tness activities. However, for a long time, due to the historical and social impact of many factors, college physical education work is far from being universally recognized. College physical course consists of theoretical physical education class and sports practical classes composed of only two courses in order to achieve common development goals college physical education. At present, although the theory of physical education teaching experts made a number of proposals for reform, but did not form a complete teaching system, which leads to the problem of teaching the theory of college sports programs still cannot get solved. We studied sports teaching evaluation system, describes the theoretical basis for building efficient sports teaching appraisal system, and analyzes the constituent elements of the evaluation system. 展开更多
关键词 comprehensive quality physical education four-oriented education system policy analysis.
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Music's Impact on the Comprehensive Quality of Students in Sports Dance Teaching
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作者 Zhang Xiaoyan 《International English Education Research》 2014年第9期95-96,共2页
Music is the soul of sports dance. Sports dance can be carried out smoothly by the accompaniment of music. Therefore the two should be in harmony and unity to perform the essence of sports dance totally. This article ... Music is the soul of sports dance. Sports dance can be carried out smoothly by the accompaniment of music. Therefore the two should be in harmony and unity to perform the essence of sports dance totally. This article tries analyzing the impact of music in sports dance teaching for students in physiological, psychological, creativity, imagination, aesthetic and so on to explore the important role of music in the development of students' comprehensive quality, in order to help sports dance teaching. 展开更多
关键词 Music Sports dance Teaching comprehensive quality Influence.
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Improved AHP method and its application in lake environmental comprehensive quality evaluation—a case study of Xuanwu Lake, Nanjing, China 被引量:5
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作者 张燕 张洪 +1 位作者 高翔 彭补拙 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2007年第4期427-433,共7页
The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, dete... The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, determining their weight may lead to uncertainty.. Therefore, an improved AHP method had been developed. The process of the improved AHP method involved four key procedures. The weights of pollution factors were completely related to the objective monitoring data through the standardization of these procedures. The environmental comprehensive quality of water and sediment of Xuanwu Lake, Nanjing, China had been evaluated. The environmental quality comprehensive indices (EQCI) of the water in 1991-1995 and 1996-2000 were 3.32 and 1.85, respectively, indicating that the water quality improved. The EQCI of the sediment in 1995 and 2000 indicates that the sediment contamination decreased from 1995 to 2000. Such results agreed with the fact that the lake had been under comprehensive control. However, with the classical AHP method, the EQCI of the sediment in the northwestern part of the lake may have indicated that sediment contamination increased from 1995 to 2000. The discrepancy may have resulted from the judgment difference of the experts. The improved AHP method can avoid arbitrariness of subjective judgment and can reflect the real influential factors of environment pollution in different periods or regions. 展开更多
关键词 seating order WEIGHT improved AHP method environmental quality comprehensive evaluation Xuanwu Lake
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Reform of the Comprehensive Practical Course System for Mechanical and Electronic Engineering Majors Under the Background of New Engineering
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作者 Yali Yu Keyi Wang Yong Yang 《Journal of Contemporary Educational Research》 2024年第2期85-90,共6页
Under the background of new engineering,the reform of the comprehensive practical course system for mechanical and electronic engineering majors actively responds to the challenges posed by the new round of technologi... Under the background of new engineering,the reform of the comprehensive practical course system for mechanical and electronic engineering majors actively responds to the challenges posed by the new round of technological revolution and industrial transformation to higher education,cultivating top-notch innovative intellectuals with comprehensive engineering qualities,meeting the requirements of being able to solve complex engineering problems rather than just cognitive capabilities,forming two core courses through reconstructing and reshaping the core courses of the major.The core courses include Drive,Measurement,and Control I and Drive,Measurement,and Control II,which highlight the comprehensive framework of mechanical and electronic engineering professional knowledge,continuing the comprehensive practical course system based on the unity of knowledge and practice,following the trend of new engineering,highlighting the practicality of professional innovation,assisting engineering education reform,and promoting high-quality development of new engineering professionals cultivation. 展开更多
关键词 comprehensive engineering quality Mechanical and Electronic Engineering Practical course system New engineering
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Design and test of portable comprehensive quality non-destructive detector for grape bunches based on spectrum 被引量:1
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作者 Sheng Gao Jianhua Xu 《Journal of Future Foods》 2022年第3期275-283,共9页
Based on the analysis technology of visible/near infrared diffuse reflectance spectroscopy a portable and nondestructive detector was designed to test comprehensive quality of red globe grape bunches in the growth per... Based on the analysis technology of visible/near infrared diffuse reflectance spectroscopy a portable and nondestructive detector was designed to test comprehensive quality of red globe grape bunches in the growth period.The detector included spectrum acquisition probe,spectrometer,lithium battery,halogen lamp light source,advanced RISC machines(ARM)board and peripheral circuit.Based on microsoft foundation classes(MFC)development tool,the real-time analysis and processing software of the detector was written by C++language.The optimal partial least squares regression(PLSR)detection model of multi-quality parameters was implanted into the hardware device.This paper selected the red globe grapes bunches in the growth period as the research samples,collected the visible/near infrared diffuse reflectance spectrum information,and then used the established PLSR model to detect the soluble solid content(SSC),total acid(TA)and pH of the samples to generate comprehensive quality parameter.So as to realize the nondestructive detecting of comprehensive quality of red globe grapes bunches in the growth period.In conclusion,the detector could realize real-time and non-destructive detecting of red globe grapes bunches in growth period aiming at the comprehensive quality. 展开更多
关键词 Red globe grapes bunches comprehensive quality Visible/near infrared spectroscopy Non-destructive detection Portable detector
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A Comparative Analysis of China’s Student Evaluation in the New Era
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作者 Qing Wen 《Journal of Contemporary Educational Research》 2024年第8期188-192,共5页
Student evaluation,which involves assessing students using specific standards,techniques,and methods,encompasses self-evaluation by students,evaluation by educators,and so on.It has long been a focal point and challen... Student evaluation,which involves assessing students using specific standards,techniques,and methods,encompasses self-evaluation by students,evaluation by educators,and so on.It has long been a focal point and challenge in China’s educational system reform.This paper aims to broaden the approach to developing and reforming student evaluation within the context of China’s new era by summarizing its evolving characteristics,analyzing its pain points,and comparing the concepts and standards of student evaluation in developed countries with those in China. 展开更多
关键词 Student evaluation comprehensive quality COMPARISON
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Comprehensive evaluation of Actinidia arguta fruit based on the nutrition and taste:67 germplasm native to Northeast China 被引量:7
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作者 Mengting Song Heran Xu +5 位作者 Guang Xin Changjiang Liu Xiaorong Sun Yinhong Zhi Bin Li Yixiao Shen 《Food Science and Human Wellness》 SCIE 2022年第2期393-404,共12页
Actinidia arguta is a berry fruit with high nutritional values.To evaluate the comprehensive quality,the fruit weight,titratable acid(TAC),soluble solids(SSC),vitamin C,mineral elements,and taste value of67 accessions... Actinidia arguta is a berry fruit with high nutritional values.To evaluate the comprehensive quality,the fruit weight,titratable acid(TAC),soluble solids(SSC),vitamin C,mineral elements,and taste value of67 accessions of A.arguta were measured,and sensory attributes including olfactive intensity,juiciness,sweetness,sourness,and astringency were assessed.Cluster analysis was carried out based on mineral elements,and principal component analysis(PCA)was used for comprehensive score ranking.The result demonstrated that fruit weight ranged from 3.5 g to 24.2 g,SSC ranged from 11.94%to 20.56%,TAC ranged from 0.15%to 1.20%,and vitamin C ranged from 3.51 g/kg to 230.76 g/kg(fresh weight)among the tested samples.There were significant differences in sourness,sweetness,bitterness,and umami among the 67 accessions based on electronic tongue analysis,and this result was rapidly and objectively characterized by the sensory assessment.The dendrogram was obtained and clustered the accessions into two major clusters,and five principal components were extracted by PCA.Overall,the information provided by this study identified the 10 best germplasm resources for fresh-eating and processing fruits.It can provide theoretical reference for nutritional efficacy evaluation and food development of A.arguta. 展开更多
关键词 Actinidia arguta Electronic tongue analysis Cluster analysis Principal component analysis comprehensive quality
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Evaluation of Ambient Air Quality and Its Changing Trend in Jinan City during 2013-2020
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作者 Yang LIU Zhaojun WANG +4 位作者 Kaizheng SUN Xuejing DAI Min ZHU Shanshan MA Hualing ZHANG 《Meteorological and Environmental Research》 CAS 2022年第4期118-124,共7页
Based on the automatic monitoring data of ambient air in Jinan City from 2013 to 2020,the changing trend and characteristics of air quality in Jinan City during 2013-2020 were analyzed by using the fuzzy comprehensive... Based on the automatic monitoring data of ambient air in Jinan City from 2013 to 2020,the changing trend and characteristics of air quality in Jinan City during 2013-2020 were analyzed by using the fuzzy comprehensive evaluation,air quality index(AQI)and ambient air quality comprehensive index methods.The three methods are different in principle,purpose of use,and characterization methods,but the conclusions are consistent.The ambient air quality in Jinan City was improved significantly from 2013 to 2020.The prime pollutants were mainly PM_(2.5)and PM_(10),but the impact on air quality declined,and the impact of O_(3)on air quality increased.The complex pollution characteristics were obvious.Air pollution was the most severe in winter and lighter in summer. 展开更多
关键词 Air quality Fuzzy comprehensive evaluation AQI Air quality comprehensive index
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Research on the Construction of Application- Oriented Software Engineering Semester Training System
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作者 Xiang Wei Jian Zhang Weiwei Xing 《计算机教育》 2020年第12期176-181,共6页
"Semester Training"has been adopted as an important part of the personnel training in software engineering majors since it was first put forward.The ultimate goal of semester training is to improve the profe... "Semester Training"has been adopted as an important part of the personnel training in software engineering majors since it was first put forward.The ultimate goal of semester training is to improve the professional quality of students in an all-round way,then eventually achieve the goal of satisfactory employment for both students and enterprises.However,in order to achieve the above purpose,the design of traditional training project still has the following problems:the topic selection of traditional training is designed by teachers in college,which lacks the training of engineering ability aiming at practical problems;the content and technology of traditional project training are out of date,ignoring the urgent demand of software industry development for advanced technology application;the traditional project training inspects the mastery of knowledge in each semester Degree,ignores the incremental of a progressive training system.In view of the above problems,this study proposes an Application-Oriented Software Engineering Semester Training System.Practice has proved that the construction of the training system can effectively improve the quality of teaching,so as to further improve the comprehensive quality of students. 展开更多
关键词 semester training software engineering application-oriented comprehensive quality
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From Small Activities to Big Life:The Dilemma and Implementation Path to Discipline Integration in Middle Schools Pointing to Qualities
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作者 Zizhen Lu 《Review of Educational Theory》 2021年第3期29-33,共5页
The cross-integration of middle school disciplines is the current trend and the need of education,but it is faced with difficulties in practice.The article mainly adopts the observation method and literature research ... The cross-integration of middle school disciplines is the current trend and the need of education,but it is faced with difficulties in practice.The article mainly adopts the observation method and literature research method,analyzes the dilemma with three aspects,and put forward the progressive four-step implementation path.Respectively,schools and teachers can set up teaching objectives pointing to the core qualities of disciplines firstly,organize teaching materials to carry out small interdisciplinary activities in class secondly,then integrate teachers to launch big project-based learning and interdisciplinary activities,finally create comprehensive curriculum pointing to comprehensive qualities. 展开更多
关键词 Cross-integration Middle school disciplines INTERDISCIPLINARY Discipline integration comprehensive curriculum comprehensive quality
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Water quality characteristics and assessment of Yongding New River by improved comprehensive water quality identification index based on game theory 被引量:9
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作者 Yu Liu Yucheng Hu +2 位作者 Yumei Hu Yuqi Gao Zhenying Liu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2021年第6期40-52,共13页
The Yongding New River is essential for the water supplies of Tianjin.To date,there is no comprehensive report that assesses the year-round water quality of the Yongding New River Main stream.Moreover,little attention... The Yongding New River is essential for the water supplies of Tianjin.To date,there is no comprehensive report that assesses the year-round water quality of the Yongding New River Main stream.Moreover,little attention has been given to determining a combined weight for improving the traditional comprehensive water quality identification index(ICWQII)by the game theory.Seven water quality parameters were investigated monthly along the main stream of the Yongding New River from May 2018 to April 2019.Organic contaminants and nitrogen pollution were mainly caused by point sources pollution,and the total phosphorus mainly by non-point source pollution.Dramatic spatio-temporal variations of water quality parameters were jointly caused by different pollutant sources and hydrometeorological factors.In terms of this study,an improved comprehensive water quality identification index(ICWQII)based on entropy weight or variation coefficient and traditional CWQII underestimated the water qualities,and an ICWQII based on the superstandard multiple method overvalued the assessments.By contrast,water qualities assessments done with an ICWQII based on the game theory matched perfectly with the practical situation.The ICWQII based on game theory proposed in this study takes into account not only the degree of disorder and variation of water quality data,but also the influence of standard-exceeded pollution indicators,whose results are relatively reasonable.All findings and the ICWQII based on game theory can provide scientific support for decisions related to the water environment management of the Yongding New River and other waters. 展开更多
关键词 Water quality assessment Improved comprehensive water quality identification index Game theory Combined weight Spatio-temporal variation Yongding New River
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Photochemical Process Modeling and Analysis of Ozone Generation 被引量:5
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作者 王冰 邱彤 陈丙珍 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2014年第6期721-729,共9页
Air pollution in modern city and industrial zones has become a serious public concern in recent years in China. Significance of air quality assessment and emission control strategy design is increasing. Most studies i... Air pollution in modern city and industrial zones has become a serious public concern in recent years in China. Significance of air quality assessment and emission control strategy design is increasing. Most studies in China focus on particulate matter(PM), especially PM2.5, while few account for photochemical secondary air pollutions represented by ozone(O3). In this paper, a procedure for air quality simulation with comprehensive air quality model with extensions(CAMx) is demonstrated for studying the photochemical process and ozone generation in the troposphere. As a case study, the CAMx photochemical grid model is used to model ozone over southern part of Beijing city in winter, 2011. The input parameters to CAMx include emission sources, meteorology field data, terrain definition, photolysis status, initial and boundary conditions. The simulation results are verified by theoretical analysis of the ozone generation tendency. The simulated variation tendency of domain-wide average value of hourly ozone concentration coincides reasonably well with the theoretical analysis on the atmospheric photochemical process, demonstrating the effectiveness of the procedure. An integrated model system that cooperates with CAMx will be established in our future work. 展开更多
关键词 comprehensive air quality model with extensions MULTI-SCALE OZONE air quality modeling PHOTOCHEMICAL
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Effects of water stress at different growth stages on comprehensive fruit quality and yield in different bunches of tomatoes in greenhouses 被引量:4
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作者 Shuxue Hao Hongxia Cao +1 位作者 Hubing Wang Xiaoyan Pan 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2019年第3期67-76,共10页
The aim of this study was to investigate the effects of tomato quality and yield between different bunches and the differences between the two comprehensive evaluation methods on tomato quality ranking under water str... The aim of this study was to investigate the effects of tomato quality and yield between different bunches and the differences between the two comprehensive evaluation methods on tomato quality ranking under water stress.Two degrees of water stress including mild water stress(W1)and moderate water stress(W2),and three growth stages that water stress applied including seedling stage(S1),flowering stage(S2)and fruit expanding stage(S3)were tested in this study.The yield and quality of different bunches of tomatoes under water stress during different growth stages were determined as responses,and the comprehensive fruit quality ranking and yield of the second and third bunches were evaluated.The results showed that water stress was important for the improvement of fruit quality,but fruit yield decreased during water stress.The yield of the third tomato bunch decreased from 11.69%(W1S1)to 30.60%(W2S2)compared to control(97.57 t/hm^(2)),and the effects of mild water stress on fruit yield were minimal at the early growth stage.However,the fruit quality in terms of soluble sugar(SS),total soluble solids(TSS),vitamin C(VC),and firmness(F)improved under water stress compared to control.The combined effects of water stress and its application period significantly affected SS and TSS.Water stress significantly improved the content of SS and TSS in the later growth period compared to seedling and flowering stages.Meanwhile,there was a significant difference in tomato quality between the second and third bunches of fruit,especially in the content of SS,organic acid(OA)and lycopene(L).Principal Component Analysis(PCA)and Grey Relational Analysis(GRA)were used to evaluate comprehensive fruit quality,and the best treatment in terms of the fruit quality was W1S3 for both bunches.The rank-sum ratio(RSR)method was used to evaluate fruit quality and yield,the results showed that W1S3 ranked first based on PCA and W1S1 ranked first based on GRA.Water stress enhanced tomato quality but inevitably reduced its yield during each growth stage.The application of mild water stress during the fruit expanding stage(W1S3)was considered to be the best treatment to provide satisfactory fruit quality and yield based on RSR. 展开更多
关键词 water stress growth stages TOMATO comprehensive fruit quality YIELD GREENHOUSE
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Coastal geomorphic evolution at the Denglou Cape, the Leizhou Peninsula 被引量:1
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作者 Wang Lirong(王丽荣) +7 位作者 Zhao Huanting(赵焕庭) Song Chaojing(宋朝景) Yuan Jiayi(袁家义) Yu Hongbing(于红兵) 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2002年第4期597-611,共15页
The Denglou Cape, southwest of the Leizhou Peninsula, is the most typical tropical coast in the continent of China.The coastal geomorphic development basics of the geology and Quaternary environment change are discus... The Denglou Cape, southwest of the Leizhou Peninsula, is the most typical tropical coast in the continent of China.The coastal geomorphic development basics of the geology and Quaternary environment change are discussed. Aerial photograph interpretation with fieldwork is applied to draw the outlines of geomorphic types. Based on the investigative data, the exogenic forces and marine organism conditions concerning tropical coast development in the area are expounded, and coastal dynamo-deposition geomorphic bodies are analysed, mainly with sea cliff-abrasion platform,barrier-lagoon system, modern beach, coral reef and mangrove tidal flat, and the general process of coastal evolution at this area, as well as coastline changes since middle Holocene transgression. 展开更多
关键词 Tropical coastal geomorphology coral reef mangrove tidal flat barrier-lagoon system CAPE Leizhou Peninsula view of turf management a comprehensive assessment indices system for turf quality is proposed i.e. landscape quality assessment
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Comprehensive evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP method and ^(137)Cs dating 被引量:4
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作者 Yan ZHANG Xiang GAO +2 位作者 Zhenyu ZHONG Xihai DENG Buzhuo PENG 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2008年第3期370-379,共10页
Through the use of general sampling and measurement by ^(137)Cs dating,problems regarding the absence of monitoring data can easily be resolved.Further,weighted values need to be determined while Environment Quality C... Through the use of general sampling and measurement by ^(137)Cs dating,problems regarding the absence of monitoring data can easily be resolved.Further,weighted values need to be determined while Environment Quality Comprehensive Index(EQCI)is commonly used as applied in environmental quality comprehensive evaluation.In order to overcome the subjectivity in determining weights,the modified Analytical Hierarchy Process(AHP)method was designed.The modified AHP method involved the following key procedures:First,the parameters y_(i1) and y_(i2) were calculated based on the monitoring data;second,the factors were put in order according to the symbol and value of y_(i1) and y_(i2);third,the continuous odd integers,which represented the importance of factors,were given to factors according to their seating order;and,fourth,the factor weights were determined from the pair-wise comparison matrix calculated by the ratio of the given odd integers.Therefore,the weights were completely based on the monitoring data.In the present study,the comprehensive quality of sediments in five sections of Lake Dianchi were evaluated and the results indicated that the current contamination of sediments in each lake section is much more serious than at any other time in history. 展开更多
关键词 ^(137)Cs dating modified AHP method environment quality comprehensive evaluation heavy metal contamination of sediment Lake Dianchi
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Water quality assessment in Qu River based on fuzzy water pollution index method 被引量:33
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作者 Ranran Li Zhihong Zou Yan An 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第12期87-92,共6页
A fuzzy improved water pollution index was proposed based on fuzzy inference system and water pollution index. This method can not only give a comprehensive water quality rank, but also describe the water quality situ... A fuzzy improved water pollution index was proposed based on fuzzy inference system and water pollution index. This method can not only give a comprehensive water quality rank, but also describe the water quality situation with a quantitative value, which is convenient for the water quality comparison between the same ranks. This proposed method is used to assess water quality of Qu River in Sichuan, China. Data used in the assessment were collected from four monitoring stations from 2006 to 2010. The assessment results show that Qu River water quality presents a downward trend and the overall water quality in 2010 is the worst. The spatial variation indicates that water quality of Nanbashequ section is the pessimal. For the sake of comparison, fuzzy comprehensive evaluation and grey relational method were also employed to assess water quality of Qu River. The comparisons of these three approaches' assessment results show that the proposed method is reliable. 展开更多
关键词 Water quality assessmentFuzzy inferenceWater pollution indexFuzzy comprehensive evaluation
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Evaluation of tomato fruit quality response to water and nitrogen management under alternate partial root-zone irrigation 被引量:1
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作者 Yang Hui Cao Hongxia +3 位作者 Hao Xinmei Guo Lijie Li Hongzheng Wu Xuanyi 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2017年第5期85-94,共10页
A pot experiment was conducted to investigate the effects of different water and nitrogen supply amounts on the comprehensive assessment of tomato fruit quality and root growth parameters under alternate partial root-... A pot experiment was conducted to investigate the effects of different water and nitrogen supply amounts on the comprehensive assessment of tomato fruit quality and root growth parameters under alternate partial root-zone irrigation.Three upper irrigation limitations(i.e.70%(W1),80%(W2)and 90%(W3)of field capacity,respectively)and three N-fertilizer levels(i.e.0.18(N1),0.30(N2)and 0.42(N3)g/kg soil,respectively)were arranged with a randomized complete block design,and alternate partial root-zone irrigation method was applied.Results showed that fruit yields under deficit irrigation(W1 and W2)were decreased by 6.9%and 2.0%respectively compared with W3 under N1 level.Yields of tomato under W1N1 and W1N2 combinations were also reduced by 10.3%and 7.2%,respectively compared with W1N3 combination.Root dry weight,root length,root surface area and root volume were all increased in W1N2 treatment.According to two-way ANOVA,the root parameters except root dry weight,were extremely sensitive to water,nitrogen and the cross effect of the two factors.TSS(total soluble solids),SS(soluble sugars)and OA(organic acid)in the fruits increased with the decrease in irrigation water,OA and NC reduced with decreasing amount of nitrogen.Moreover,within an appropriate range,as more irrigation water and nitrogen were applied,the higher VC(vitamin C)and lycopene contents were identified in the fruits.Eventually,the combinational evaluation method(i.e.entropy method and gray relational analysis)showed that W2N2 ranked highest in comprehensive fruit quality.Therefore,considering the tradeoff between fruit comprehensive quality and yields,upper irrigation limitation of 80%θf and N-fertilizer of 0.30 g/kg soil with alternate partial root-zone irrigation was the optimal cultivation strategy for the greenhouse tomato in autumn-winter season in northwest China. 展开更多
关键词 greenhouse tomato alternate partial root-zone irrigation water and nitrogen root growth comprehensive fruit quality
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Performance of pond–wetland complexes as a preliminary processor of drinking water sources 被引量:12
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作者 Weidong Wang Jun Zheng +4 位作者 Zhongqiong Wang Rongbin Zhang Qinghua Chen Xinfeng Yu Chengqing Yin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第1期119-133,共15页
Shijiuyang Constructed Wetland(110 hm^2) is a drinking water source treatment wetland with primary structural units of ponds and plant-bed/ditch systems. The wetland can process about 250,000 tonnes of source water ... Shijiuyang Constructed Wetland(110 hm^2) is a drinking water source treatment wetland with primary structural units of ponds and plant-bed/ditch systems. The wetland can process about 250,000 tonnes of source water in the Xincheng River every day and supplies raw water for Shijiuyang Drinking Water Plant. Daily data for 28 months indicated that the major water quality indexes of source water had been improved by one grade. The percentage increase for dissolved oxygen and the removal rates of ammonia nitrogen, iron and manganese were 73.63%, 38.86%, 35.64%, and 22.14% respectively. The treatment performance weight of ponds and plant-bed/ditch systems was roughly equal but they treated different pollutants preferentially. Most water quality indexes had better treatment efficacy with increasing temperature and inlet concentrations. These results revealed that the pond–wetland complexes exhibited strong buffering capacity for source water quality improvement. The treatment cost of Shijiuyang Drinking Water Plant was reduced by about 30.3%. Regional rainfall significantly determined the external river water levels and adversely deteriorated the inlet water quality, thus suggesting that the "hidden" diffuse pollution in the multitudinous stream branches as well as their catchments should be the controlling emphases for river source water protection in the future. The combination of pond and plant-bed/ditch systems provides a successful paradigm for drinking water source pretreatment. Three other drinking water source treatment wetlands with ponds and plant-bed/ditch systems are in operation or construction in the stream networks of the Yangtze River Delta and more people will be benefited. 展开更多
关键词 Pond–wetland combination Plant-bed/ditch system Constructed root channel technology Semi-subsurface flow wetland Weighted comprehensive water quality index
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