检索范围：
排序： 展示方式：
DESIGNING DIVERSIFIED CROPPING SYSTEMS IN CHINA: THEORY, APPROACHES AND IMPLEMENTATION
《农业科学与工程前沿（英文）》 2021年 第8卷 第3期 页码 362-372 doi: 10.15302/J-FASE -2021392
Intensive agriculture in China over recent decades has successfully realized food security but at the expense of negative environmental impacts. Achieving green transformation of agriculture in China requires fundamental restructuring of cropping systems. This paper presents a theoretical framework of theory, approaches and implementation of crop diversification schemes in China. Initially, crop diversification schemes require identifying multiple objectives by simultaneously considering natural resources, limiting factors/constraints, and social and economic demands of different stakeholders. Then, it is necessary to optimize existing and/or design novel cropping systems based upon farming practices and ecological principles, and to strengthen targeted ecosystem services to achieve the identified objectives. Next, the resulting diversified cropping systems need to be evaluated and examined by employing experimental and modeling approaches. Finally, a strategic plan, as presented in this paper, is needed for implementing an optimized crop diversification in China based upon regional characteristics with the concurrent objectives of safe, nutritious food production and environmental protection. The North China Plain is used as an example to illustrate the strategic plan to optimize and design diversified cropping systems. The implementation of crop diversification in China will set an example for other countries undergoing agricultural transition, and contribute to global sustainable development.
SUSTAINABLE SUGARCANE CROPPING IN CHINA
《农业科学与工程前沿（英文）》 2022年 第9卷 第2期 页码 272-283 doi: 10.15302/J-FASE-2022442
Demand for sugar is projected to grow in China for the foreseeable future. However, sugarcane production is unlikely to increase due to increasing production cost and decreasing profit margin. The persisting sugarcane yield plateau and the current cropping system with fertilizer overuse, soil acidification and pests and diseases remain the major productivity constraints. Sugarcane agriculture supports the livelihood of about 28 million farmers in South China; hence, sustaining it is a socioeconomic imperative. More compellingly, to meet the ever-increasing Chinese market demand, annual sugar production must be increased from the current 10 Mt to 16 Mt by 2030 of which 80% to 90% comes from sugarcane. Therefore, increasing sugar yield and crop productivity in an environmentally sustainable way must be a priority. This review examines the current Chinese sugarcane production system and discuss options for its transition to a green, sustainable cropping system, which is vital for the long-term viability of the industry. This analysis shows that reducing chemical inputs, preventing soil degradation, improving soil health, managing water deficit, provision of clean planting material, and consolidation of small farm holdings are critical requirements to transform the current farming practices into an economically and environmentally sustainable sugarcane cropping system.
关键词： sustainable sugarcane cropping / soil health / rotation and intercropping / soil acidification
《农业科学与工程前沿（英文）》 2022年 第9卷 第2期 页码 284-294 doi: 10.15302/J-FASE-2021435
Bioenergy, currently the largest renewable energy source in the EU (64% of the total renewable energy consumption), has sparked great interest to meet the 32% renewable resources for the 2030 bioeconomy goal. The design of innovative cropping systems informed by bioeconomy imperatives requires the evaluate of the effects of introducing crops for bioenergy into conventional crop rotations. This study aimed to assess the impacts of changes in conventional cropping systems in mixed dairy cattle farms redesigned to introduce bioenergy crops either by increasing the biomass production through an increase of cover crops, while keeping main feed/food crops, or by substituting food crops with an increase of the crop rotation length. The assessment is based on the comparison between conventional and innovative systems oriented to feed and biogas production, with and without tillage, to evaluate their agri-environmental performances (biomass production, nitrogen fertilization autonomy, greenhouse gas emissions and biogas production). The result showed higher values in the biogas cropping system than in the conventional and feed ones for all indicators, biomass productivity (27% and 20% higher, respectively), nitrogen fertilization autonomy (26% and 73% higher, respectively), methanogenic potential (77% and 41% higher, respectively) and greenhouse gas emissions (15% and 3% higher, respectively). There were no negative impacts of no-till compared to the tillage practice, for all tested variables. The biogas cropping system showed a better potential in terms of agri-environmental performance, although its greenhouse gas emissions were higher. Consequently, it would be appropriate to undertake a multicriteria assessment integrating agri-environmental, economic and social performances.
DESIGNING DIVERSIFIED CROPPING SYSTEMS IN CHINA: THEORY, APPROACHES AND IMPLEMENTATION
Wen-Feng CONG, Chaochun ZHANG, Chunjie LI, Guangzhou WANG, Fusuo ZHANG
《农业科学与工程前沿（英文）》 页码 362-372 doi: 10.15302/J-FASE-2021392
关键词： Agriculture Green Development crop diversification cropping system modeling ecosystem services sustainable agriculture
Nicolas MUNIER-JOLAIN, Martin LECHENET
《农业科学与工程前沿（英文）》 2020年 第7卷 第1期 页码 21-27 doi: 10.15302/J-FASE-2019292
Redesigning cropping and farming systems to enhance their sustainability is mainly addressed in scientific studies using experimental and modeling approaches. Large data sets collected from real farms allow for the development of innovative methods to produce generic knowledge. Data mining methods allow for the diversity of systems to be considered holistically and can take into account the diversity of production contexts to produce site-specific results. Based on the very few known studies using such methods to analyze the crop management strategies affecting pesticide use and their effect on farm performance, we advocate further investment in the development of large data sets that can support future research programs on farming system design.
关键词： data mining holistic Integrated Pest Management economics DEPHY network.
《农业科学与工程前沿（英文）》 2022年 第9卷 第2期 页码 295-308 doi: 10.15302/J-FASE-2021434
Since the Green Revolution cropping systems have been progressively homogenized and intensified with increasing rates of inputs such as fertilizers, pesticides and water. This has resulted in higher crop productivity but also a high environmental burden due to increased pollution and water depletion. To identify opportunities for increasing the productivity and reducing the environmental impact of cropping systems, it is crucial to assess the associated trade-offs. The paper presents a model-based analysis of how 30 different crop rotations practiced in the North China Plain could be combined at the regional level to overcome trade-offs between indicators of economic, food security, and environmental performance. The model uses evolutionary multi-objective optimization to maximize revenues, livestock products, dietary and vitamin C yield, and to minimize the decline of the groundwater table. The modeling revealed substantial trade-offs between objectives of maximizing productivity and profitability versus minimizing ground water decline, and between production of livestock products and vitamin C yield. Six strategies each defining a specific combination of cropping systems and contributing to different extents to the various objectives were identified. Implementation of these six strategies could be used to find opportunities to mitigate the trade-offs between objectives. It was concluded that a holistic analysis of the potential of a diversity cropping systems at a regional level is needed to find integrative solutions for challenges due to conflicting objectives for food production, economic viability and environmental protection.
关键词： crop rotation / food security / multi-objective optimization / water use
《农业科学与工程前沿（英文）》 2022年 第9卷 第3期 页码 457-464 doi: 10.15302/J-FASE-2022452
● A simple model was used to evaluate how increasing temporal variability in precipitation influences crop yields and nitrogen losses.
关键词： crop yield fertilizer timing nitrogen loss precipitation variability toy model
Strain and process engineering toward continuous industrial fermentation
《化学科学与工程前沿（英文）》 2023年 第17卷 第10期 页码 1336-1353 doi: 10.1007/s11705-022-2284-6
关键词： continuous fermentation productivity contamination strain degeneration metabolic engineering
Ant colony optimization in continuous problem
YU Ling, LIU Kang, LI Kaishi
《机械工程前沿（英文）》 2007年 第2卷 第4期 页码 459-462 doi: 10.1007/s11465-007-0079-6
CH4 and N2O emissions from double-rice cropping system as affected by Chinese milk
Heshui XU,Dengyun LI,Bo ZHU,Kai ZHANG,Yadong YANG,Chen WANG,Ying JIANG,Zhaohai ZENG
《农业科学与工程前沿（英文）》 2017年 第4卷 第1期 页码 59-68 doi: 10.15302/J-FASE-2017137
关键词： Chinese milk vetch CH4 double-rice cropping system grain yield N2O rice straw
Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems
Gu FENG, Jingping GAI, Xionghan FENG, Haigang LI, Lin ZHANG, Keke YI, Jialong LV, Yiyong ZHU, Li TANG, Yilin LI
《农业科学与工程前沿（英文）》 2019年 第6卷 第4期 页码 341-347 doi: 10.15302/J-FASE-2019280
A four-year project, entitled “The mechanisms of fraction transformation and high use efficiency of P fertilizer in Chinese cropping systems” commenced in 2017. The project was established to answer three key questions and looked at 17 cropping systems on ten soils. First, we asked what are the dynamics of transformation, fixation and mobilization of P fertilizers in soil-cropping systems? Second, what are the mechanisms of soil-crop-microbe interactions by which P fertilizer can be efficiently used? Third, how to manipulate the processes of P use in cropping systems? The targets of this project are (1) to explore the mechanisms of P fixation, the pathways of loss of P availability and the threshold of migration of fertilizer P in the field; (2) to uncover mechanisms by which soil legacy P is mobilized through root physiological and morphological processes and through arbuscular mycorrhizal fungi and P-solubilizing bacteria in rhizosphere and hyphosphere; (3) to estimate the biological potential of crops for high efficiency P absorption and use; (4) to innovate new approaches for improving the efficiency of P fertilizers. The outcomes will provide theoretical support for setting standards for limitation of P fertilizer application rate in the main cropping zones of China.
关键词： fixation mobilization phosphorus fertilizer rhizosphere transformations utilization
Anti-biofouling strategies for implantable biosensors of continuous glucose monitoring systems
《化学科学与工程前沿（英文）》 2023年 第17卷 第12期 页码 1866-1878 doi: 10.1007/s11705-023-2340-x
关键词： implantable glucose biosensor anti-biofouling continuous glucose monitoring immune responses
Bending and rotational behaviour of semi-continuous composite beams
WANG Jingfeng, LI Guoqiang
《结构与土木工程前沿（英文）》 2008年 第2卷 第2期 页码 116-122 doi: 10.1007/s11709-008-0015-9
关键词： rotational effective deflection calculation semi-continuous composite full-scale semi-rigid
《结构与土木工程前沿（英文）》 页码 827-854 doi: 10.1007/s11709-023-0954-1
关键词： seismic performance continuous girder bridge grouting sleeve-prestressed tendon composite connections grouted sleeve connection design parameters
标题 作者 时间 类型 操作
AGRI-ENVIRONMENTAL ASSESSMENT OF CONVENTIONAL AND ALTERNATIVE BIOENERGY CROPPING SYSTEMS PROMOTING BIOMASS
期刊论文
DESIGNING DIVERSIFIED CROPPING SYSTEMS IN CHINA: THEORY, APPROACHES AND IMPLEMENTATION
Wen-Feng CONG, Chaochun ZHANG, Chunjie LI, Guangzhou WANG, Fusuo ZHANG
期刊论文
Methodological considerations for redesigning sustainable cropping systems: the value of data-mininglarge and detailed farm data sets at the cropping system level
Nicolas MUNIER-JOLAIN, Martin LECHENET
期刊论文
TRADE-OFFS IN THE DESIGN OF SUSTAINABLE CROPPING SYSTEMS AT A REGIONAL LEVEL: A CASE STUDY ON THE NORTH
期刊论文
CLIMATE-CHANGE-INDUCED TEMPORAL VARIATION IN PRECIPITATION INCREASES NITROGEN LOSSES FROM INTENSIVE CROPPING
期刊论文
CH4 and N2O emissions from double-rice cropping system as affected by Chinese milk
Heshui XU,Dengyun LI,Bo ZHU,Kai ZHANG,Yadong YANG,Chen WANG,Ying JIANG,Zhaohai ZENG
期刊论文
Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems
Gu FENG, Jingping GAI, Xionghan FENG, Haigang LI, Lin ZHANG, Keke YI, Jialong LV, Yiyong ZHU, Li TANG, Yilin LI
期刊论文
京公网安备 11010502051620号
