检索范围:
排序: 展示方式:
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期
• Degree of integration of crop and livestock was insufficient on mixed smallholdings.
• Liquid manure discharges on industrial farms hamper the closing of nutrient loops.
• Coupling with local crop farms is encouraged to achieve integration of crop-livestock systems.
The proportion of industrial livestock in China has increased over the past 30 years, which increases animal performance but causes the decoupling of crop and livestock production. Here, we aimed to quantify nutrient flows, nutrient use efficiency, and nutrient losses in different livestock systems in the North China Plain based on the NUFER-farm model. Activity data were collected by face-to-face surveys on pig and dairy (41 livestock farms) during 2016–2018. The two systems included industrial farms and mixed smallholdings. In mixed smallholdings, 4.0% and 9.6% of pig and dairy feed dry matter (DM) were derived from household farmland, but 4.8% and 9.3% of manure DM recycled to household farmland. Nutrient use efficiency in industrial farms was higher than in mixed smallholdings at animal level, herd level, and system level. To produce 1 kg N and P in animal products, nutrient losses in industrial pig farms (2.0 kg N and 1.3 kg P) were lower than in mixed pig smallholdings, nutrient losses in industrial dairy farms (2.7 kg N and 2.2 kg P) were slightly higher than in mixed dairy smallholdings. Liquid manure discharge in industrial farms was the main losses pathway in contrast to mixed smallholdings. This study suggests that feed localization can reduce nutrient surpluses at the district level. It is necessary to improve manure management and increase the degree of integrated crop-livestock in smallholdings. In industrial farms, it is desirable to increase the liquid manure recycling ratio through cooperating livestock and crop production at the district level.
Yifei MA, Ling ZHANG, Zhaohai BAI, Rongfeng JIANG, Yong HOU, Lin MA
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期 页码 58-71 doi: 10.15302/J-FASE-2020371
关键词: industrial farms mixed smallholdings pig dairy nutrient management
Iteration framework for solving mixed lubrication computation problems
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 635-648 doi: 10.1007/s11465-021-0632-8
关键词: mixed lubrication discretization formula relative error Reynolds equation asperity
Perspective of mixed matrix membranes for carbon capture
Shinji Kanehashi, Colin A. Scholes
《化学科学与工程前沿(英文)》 2020年 第14卷 第3期 页码 460-469 doi: 10.1007/s11705-019-1881-5
Zhigang LIU, Shaomin ZHU, Yansheng LI
《环境科学与工程前沿(英文)》 2012年 第6卷 第1期 页码 45-50 doi: 10.1007/s11783-010-0262-6
关键词: aluminum (Al) form resins desalination mixed bed (MB) regeneration
《环境科学与工程前沿(英文)》 2022年 第16卷 第1期 页码 6-6 doi: 10.1007/s11783-021-1440-4
• MPs were analyzed throughout three WWTPs with mixed domestic–industrial influents.
关键词: Microplastic Wastewater treatment plant Mixed domestic-industrial influent Characteristic Daily fluctuation
《环境科学与工程前沿(英文)》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1358-2
• Microbes enhance denitrification under varying DO concentrations and SIF dosages.
关键词: Scrap iron filing Nitrate removal Phosphate removal Mixed culture denitrification Zero valent iron
Fluoride ions adsorption from water by CaCO enhanced Mn–Fe mixed metal oxides
《化学科学与工程前沿(英文)》 2023年 第17卷 第2期 页码 236-248 doi: 10.1007/s11705-022-2193-8
关键词: mesoporous materials metal oxides fluoride ion adsorption mechanism
Shaojie Wang,Zhihong Ma,Ting Zhang,Meidan Bao,Haijia Su
《化学科学与工程前沿(英文)》 2017年 第11卷 第1期 页码 100-106 doi: 10.1007/s11705-017-1617-3
Jiuxiao Hao, Xiujin Wang, Hui Wang
《环境科学与工程前沿(英文)》 2017年 第11卷 第1期 doi: 10.1007/s11783-017-0896-8
关键词: Polyhydroxyalkanoates (PHAs) Valerate Mixed culture 3-hydroxyvalerate (3HV) Propionate
Lianjie Guo, Nan Jiang, Jie Li, Kefeng Shang, Na Lu, Yan Wu
《环境科学与工程前沿(英文)》 2018年 第12卷 第2期 doi: 10.1007/s11783-018-1017-z
关键词: Mixed VOCs HSPBD plasma reactor Degradation Catalyst Relative humidity
Removal of Ni(II) ions from wastewater by micellar enhanced ultrafiltration using mixed surfactants
Amar D. Vibhandik, Kumudini V. Marathe
《化学科学与工程前沿(英文)》 2014年 第8卷 第1期 页码 79-86 doi: 10.1007/s11705-014-1407-0
关键词: MEUF Ni (II) ions membrane resistance concentration polarization mixed surfactants
Berardo NATICCHIA, Alessandra CORNELI, Alessandro CARBONARI
《工程管理前沿(英文)》 2020年 第7卷 第1期 页码 131-141 doi: 10.1007/s42524-019-0071-y
关键词: information flow management BIM mixed reality common data environment facility management
Feasibility analysis of mixed-income housing in China
TIAN Ye, BI Xiangyang, LI Dexiang
《结构与土木工程前沿(英文)》 2007年 第1卷 第3期 页码 371-377 doi: 10.1007/s11709-007-0050-y
关键词: beneficial distance analysis harmonious development hypothesis perspective
Kishore Gopalakrishnan, Javad Roostaei, Yongli Zhang
《环境科学与工程前沿(英文)》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1075-2
RSM is used to explore the impact of different parameter on algal growth response. Mixed algal culture promotes algal biomass and lipid accumulation. Optimized conditions achieve maximum productivity of algal biomass and lipid.
关键词: Algal biofuels Algal mixed cultures Algal biomass Algal lipid Wastewater Response surface methodology
标题 作者 时间 类型 操作
NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTH
期刊论文
NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTH
Yifei MA, Ling ZHANG, Zhaohai BAI, Rongfeng JIANG, Yong HOU, Lin MA
期刊论文
new regeneration approach to cation resins with aluminum salts: application of desalination by its mixed
Zhigang LIU, Shaomin ZHU, Yansheng LI
期刊论文
characteristics and daily fluctuations of microplastics throughout wastewater treatment plants with mixed
期刊论文
Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture
期刊论文
Optimization and modeling of biohydrogen production by mixed bacterial cultures from raw cassava starch
Shaojie Wang,Zhihong Ma,Ting Zhang,Meidan Bao,Haijia Su
期刊论文
Investigation of polyhydroxyalkanoates (PHAs) biosynthesis from mixed culture enriched by valerate-dominant
Jiuxiao Hao, Xiujin Wang, Hui Wang
期刊论文
Abatement of mixed volatile organic compounds in a catalytic hybrid surface/packed-bed discharge plasma
Lianjie Guo, Nan Jiang, Jie Li, Kefeng Shang, Na Lu, Yan Wu
期刊论文
Removal of Ni(II) ions from wastewater by micellar enhanced ultrafiltration using mixed surfactants
Amar D. Vibhandik, Kumudini V. Marathe
期刊论文
Framework based on building information modeling, mixed reality, and a cloud platform to support information
Berardo NATICCHIA, Alessandra CORNELI, Alessandro CARBONARI
期刊论文