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An integrated approach to site-specific management zone delineation
Yuxin MIAO, David J. MULLA, Pierre C. ROBERT
《农业科学与工程前沿(英文)》 2018年 第5卷 第4期 页码 432-441 doi: 10.15302/J-FASE-2018230
Dividing fields into a few relatively homogeneous management zones (MZ) is a practical and cost-effective approach to precision agriculture. There are three basic approaches to MZ delineation using soil and/or landscape properties, yield information, and both sources of information. The objective of this study is to propose an integrated approach to delineating site-specific MZ using relative elevation, organic matter, slope, electrical conductivity, yield spatial trend map, and yield temporal stability map (ROSE-YSTTS) and evaluate it against two other approaches using only soil and landscape information (ROSE) or clustering multiple year yield maps (CMYYM). The study was carried out on two no-till corn-soybean rotation fields in eastern Illinois, USA. Two years of nitrogen (N) rate experiments were conducted in Field B to evaluate the delineated MZs for site-specific N management. It was found that in general the ROSE approach was least effective in accounting for crop yield variability (8.0%–9.8%), while the CMYYM approach was least effective in accounting for soil and landscape (8.9%–38.1%), and soil nutrient and pH variability (9.4%–14.5%). The integrated ROSE-YSTTS approach was reasonably effective in accounting for the three sources of variability (38.6%–48.9%, 16.1%–17.3% and 13.2%–18.7% for soil and landscape, nutrient and pH, and yield variability, respectively), being either the best or second best approach. It was also found that the ROSE-YSTTS approach was effective in defining zones with high, medium and low economically optimum N rates. It is concluded that the integrated ROSE-YSTTS approach combining soil, landscape and yield spatial-temporal variability information can overcome the weaknesses of approaches using only soil, landscape or yield information, and is more robust for MZ delineation. It also has the potential for site-specific N management for improved economic returns. More studies are needed to further evaluate their appropriateness for precision N and crop management.
关键词: economically optimum nitrogen rate fuzzy cluster analysis precision nitrogen management site-specific management soil landscape property yield map
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 doi: 10.15302/J-FASE -2020355
Agriculture faces the dual challenges of food security and environmental sustainability. Here, we investigate current maize production at the field scale, analyze the yield gaps and impacting factors, and recommend measures for sustainably closing yield gaps. An experiment was conducted on a 3.9-ha maize seed production field in arid north-western China, managed with border and drip irrigation, respectively, in 2015 and 2016. The relative yield reached 70% in both years. However, drip irrigation saved 227 mm irrigation water during a drier growing season compared with traditional border irrigation, accounting for 44% of the maize evapotranspiration (ET). Yield variability under drip irrigation was 12.1%, lower than the 18.8% under border irrigation. Boundary line analysis indicates that a relative yield increase of 8% to 10% might be obtained by optimizing the yield-limiting factors. Plant density and soil available water content and available nitrogen were the three major factors involved. In conclusion, closing yield gaps with agricultural sustainability may be realized by optimizing agronomic, irrigation and fertilizer management, using water-saving irrigation methods and using site-specific management.
关键词: boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 525-544 doi: 10.15302/J-FASE-2020355
关键词: boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
SUSTAINABLE NITROGEN MANAGEMENT IN AUSTRALIAN AGROECOSYSTEMS: CHALLENGES AND OPPORTUNITIES
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 366-372 doi: 10.15302/J-FASE-2022447
● There is huge potential for improvement of nitrogen management in Australia.
关键词: Australian agroecosystems reactive nitrogen sustainable development
SUSTAINABLE NITROGEN MANAGEMENT FOR VEGETABLE PRODUCTION IN CHINA
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 373-385 doi: 10.15302/J-FASE-2022455
● Sustainable nitrogen management strategies for Chinese vegetable production are summarized.
关键词: enhanced-efficiency nitrogen fertilizer integrated knowledge and products strategy nitrogen rate reactive nitrogen loss vegetable yield
NITROGEN USE AND MANAGEMENT IN ORCHARDS AND VEGETABLE FIELDS IN CHINA: CHALLENGES AND SOLUTIONS
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 386-395 doi: 10.15302/J-FASE-2022443
● Excessive application of N fertilizers in orchards and vegetable fields (OVFs) in China is particularly common.
关键词: nitrogen fate nitrogen fertilizer orchards vegetable fields
SUSTAINABLE NITROGEN MANAGEMENT INDEX: DEFINITION, GLOBAL ASSESSMENT AND POTENTIAL IMPROVEMENTS
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 356-365 doi: 10.15302/J-FASE-2022458
● A composite N management index is proposed to measure agriculture sustainability.
关键词: global assessment indicator nitrogen management sustainable agriculture sustainable development goals
A NEW APPROACH TO HOLISTIC NITROGEN MANAGEMENT IN CHINA
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 490-510 doi: 10.15302/J-FASE-2022453
● Progress on nitrogen management in agriculture is overviewed in China.
关键词: 4R technology food chain N management N use efficiency soil-crop system sustainable management
IMPROVING NITROGEN SAFETY IN CHINA: NITROGEN FLOWS, POLLUTION AND CONTROL
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 465-474 doi: 10.15302/J-FASE-2022454
● It is necessary to address the N flows and their impacts on environment in China for sustainable N management.
关键词: barriers future management ammonia emissions nitrogen input water N pollution
Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China
Hui RAN,Shaozhong KANG,Fusheng LI,Ling TONG,Taisheng DU
《农业科学与工程前沿(英文)》 2016年 第3卷 第1期 页码 55-64 doi: 10.15302/J-FASE-2016091
关键词: yield components biomass partitioning harvest index irrigation nitrogen maize for seed production
GASEOUS REACTIVE NITROGEN LOSSES FROM ORCHARDS, VEGETABLES AND TEA PLANTATIONS
《农业科学与工程前沿(英文)》 2023年 第10卷 第2期 页码 155-166 doi: 10.15302/J-FASE-2022477
● Gaseous N emissions from orchards, vegetables and tea plantations (OVT) are reviewed.
关键词: fruit greenhouse gas green development fertilizer management climate change
Review of operational management in intelligent agriculture based on the Internet of Things
Xiangpei HU, Lijun SUN, Yaxian ZHOU, Junhu RUAN
《工程管理前沿(英文)》 2020年 第7卷 第3期 页码 309-322 doi: 10.1007/s42524-020-0107-3
关键词: Internet of Things (IoT) agricultural Internet of Things (Agri-IoT) operational management intelligent agriculture precision management traceability
Zhenling CUI, Zhengxia DOU, Hao YING, Fusuo ZHANG
《农业科学与工程前沿(英文)》 2020年 第7卷 第1期 页码 14-20 doi: 10.15302/J-FASE-2019295
Balancing crop productivity with resource use efficiency and beneficial environmental consequences is essential for sustainable agricultural development worldwide. Various strategies and approaches have been proposed and debated, but turning the concept into management practices in the field with measurable outcomes over several scales remains a challenge. An innovative approach, Integrated Soil-Crop System Management (ISSM), for producing more grain with greater nutrient use efficiencies and less environmental pollution is presented. The ISSM approach has been used in China, in field experiments as well as in thousands of farmer fields, to substantially increase the yields of maize, rice and wheat while simultaneously increasing nitrogen use efficiency and reducing environmental footprints. The scientific principle, implementation strategy and procedures of ISSM are discussed and examples of its demonstrated successes at local and regional levels across China are given. Perspectives for further development of ISSM and expanding its potential impact are also proposed and discussed.
关键词: China environmental protection food security high-yielding nitrogen management
Do not let precision medicine be kidnapped
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《医学前沿(英文)》 2015年 第9卷 第4期 页码 512-513 doi: 10.1007/s11684-015-0425-8
Obama’s precision medicine initiative made the medical community boil over after the initiative’s release. Precision medicine has been advocated by the majority of scientists and doctors. However, some experts have questioned this concept. This article does not oppose precision medicine. However, the incentive of vigorously promoting precision medicine at present is a concern.
Review on the progress of ultra-precision machining technologies
Julong YUAN, Binghai LYU, Wei HANG, Qianfa DENG
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 158-180 doi: 10.1007/s11465-017-0455-9
Ultra-precision machining technologies are the essential methods, to obtain the highest form accuracy and surface quality. As more research findings are published, such technologies now involve complicated systems engineering and been widely used in the production of components in various aerospace, national defense, optics, mechanics, electronics, and other high-tech applications. The conception, applications and history of ultra-precision machining are introduced in this article, and the developments of ultra-precision machining technologies, especially ultra-precision grinding, ultra-precision cutting and polishing are also reviewed. The current state and problems of this field in China are analyzed. Finally, the development trends of this field and the coping strategies employed in China to keep up with the trends are discussed.
关键词: ultra-precision grinding ultra-precision cutting ultra-precision polishing research status in China development tendency
标题 作者 时间 类型 操作
An integrated approach to site-specific management zone delineation
Yuxin MIAO, David J. MULLA, Pierre C. ROBERT
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL
Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU
期刊论文
NITROGEN USE AND MANAGEMENT IN ORCHARDS AND VEGETABLE FIELDS IN CHINA: CHALLENGES AND SOLUTIONS
期刊论文
SUSTAINABLE NITROGEN MANAGEMENT INDEX: DEFINITION, GLOBAL ASSESSMENT AND POTENTIAL IMPROVEMENTS
期刊论文
Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China
Hui RAN,Shaozhong KANG,Fusheng LI,Ling TONG,Taisheng DU
期刊论文
Review of operational management in intelligent agriculture based on the Internet of Things
Xiangpei HU, Lijun SUN, Yaxian ZHOU, Junhu RUAN
期刊论文
Producing more with less: reducing environmental impacts through an integrated soil-crop system management
Zhenling CUI, Zhengxia DOU, Hao YING, Fusuo ZHANG
期刊论文