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Value of Horizontal Inscribed Boards in Jiuxia Village from the Perspective of Farming-reading Culture
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作者 Qi LUO Shaomin NI +1 位作者 Zihan WEN Xiyu CHEN 《Asian Agricultural Research》 2019年第6期96-100,共5页
Horizontal inscribed boards are the main form for working people to long for and pursue a better life,and are an important carrier of traditional culture. From the perspectives of sociology,architecture and ecological... Horizontal inscribed boards are the main form for working people to long for and pursue a better life,and are an important carrier of traditional culture. From the perspectives of sociology,architecture and ecological folklore,this article analyzes the intrinsic relationships between people’s values,neighborhoods,customs and horizontal inscribed boards,and interprets the decorative value,human value and modern value of horizontal inscribed boards through preliminarily studying the cultural connotation of horizontal inscribed boards in Jiuxia Village. 展开更多
关键词 farming-reading culture Traditional villages Jiuxia VILLAGE value of HORIZONTAL inscribed BOARDS
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Case Study:Promoting Sustainable Energy Greenhouse Heating Systems to Small-Scale Local Farms
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作者 Jeremy Ferrell Ok-Youn Yu Heiyoung Kim 《Journal of Agricultural Science and Technology(A)》 2020年第4期165-180,共16页
Biomass energy generated from livestock manure,other agricultural by-products and food waste can be an affordable greenhouse-heating energy source for those seeking lower energy costs.Appalachian State University,Nort... Biomass energy generated from livestock manure,other agricultural by-products and food waste can be an affordable greenhouse-heating energy source for those seeking lower energy costs.Appalachian State University,North Carolina(NC),USA,has built a 6.1 m×9.1 m greenhouse,called the“Nexus”to test the integrated sustainable energy heating system for growing season extension with less energy cost.This is done by using on-farm biomass resources/wastes such as agricultural waste and wood chips to produce energy coupled with solar water heating to store and supplement required thermal inputs.Growing season extension with heated greenhouses increases the availability of local food throughout the year,expands available markets and increases farmers’profits.Nexus includes an above ground 5,680-L water storage tank and an aquaculture pond.It is supported by a small-scale pyrolysis system,an anaerobic digestion system,solar thermal and compost heating.The preliminary result showed that compared to a conventional space heating system,about 30%of energy was saved to keep the greenhouse temperature available for growing by radiation from the water storage tank.The main purpose of this study was to test the proposed greenhouse heating systems developed at Nexus by implementing pilot systems on two local farms.Pyrolysis and solar thermal system in conjunction with heat storage and delivery system for each farm were built and tested in order to demonstrate how to reduce greenhouse energy use.This paper describes the results of the case study,which showed significant energy savings that can promote the resource-limited farmers’interest. 展开更多
关键词 GREENHOUSE sustainable energy farms heating system small-scale.
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Enhancing Access to Bank Credit for Small-Scale Farmers in Kisumu and Kiambu Districts, Kenya Through Public-Private Partnership Initiative
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作者 Charles M. Rambo 《Chinese Business Review》 2012年第11期946-969,共24页
In Kenya, small-scale fanning has immense potential in poverty reduction. The growth of farming activities requires sustainable access to affordable credit to boost and sustain production. This study is initiated to i... In Kenya, small-scale fanning has immense potential in poverty reduction. The growth of farming activities requires sustainable access to affordable credit to boost and sustain production. This study is initiated to investigate factors influencing access to bank credit by small-scale farmers in Kisumu and Kiambu Districts, Kenya. It is necessitated by lack of a comprehensive study documenting the effectiveness of the partnership initiative in improving access to credit for small-scale farmers. The study seeks to address the following concerns: what factors influence access to bank credit by small-scale farmers under the initiative? Are small-scale farmers in various parts of the country accessing bank credit equally? Through which sources do farmers get to know about credit products provided through the initiative? Primary data was collected from 144 farmers in Kiambu and 127 farmers in Kisumu, sampled using systematic random procedure. The cross-sectional survey design was applied to guide the research process. Quantitative analysis generated cross-tabulations with chi-square and binary logistic regression. The study found that out of 144 credit applicants in Kiambu about 56.3% were successful, while in Kisumu only 37.8% were successful. Access to bank credit was significantly associated with farmers' gender, education level, income level, farm size, and farming experience. Besides, women were 1.3 times less likely to access bank credit than men. In terms of regional variation, a Kiambu farmer was 2.7 times more likely to obtain bank credit than a Kisumu farmer. The initiative is an innovative approach for enhancing access to bank credit; however, its potential has not been fully exploited. The study recommends the need: to inform farmers about credit products to clear misconceptions and myths associated with bank credit; develop innovative financing packages for small-scale farmers that are also gender-sensitive; and to initiate a training program targeting farmers with appropriate information. 展开更多
关键词 access to bank credit small-scale farming public-private partnership commercial banks government credit request
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Analysis on Value Rationality of Traditional Farm Tools in the Taomin Area
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作者 Tingting WANG 《Asian Agricultural Research》 2023年第5期55-57,共3页
This paper introduces the types of traditional farm tools,and analyzes the value rationality of these traditional farm tools:on the one hand,these farm tools have witnessed the farming culture,and they are also a mani... This paper introduces the types of traditional farm tools,and analyzes the value rationality of these traditional farm tools:on the one hand,these farm tools have witnessed the farming culture,and they are also a manifestation of local culture in the Taomin area,representing the cultural characteristics and civilization progress of this area. 展开更多
关键词 Taomin farm tools value rationality
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Assessment of Coffea Shade Value through Comparison of Mountainous Area with Farm Land Coverage,in Arsi Gololcha District,Oromia,Ethiopia
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作者 Alemayehu Diriba Roba 《Journal of Botanical Research》 2021年第4期29-36,共8页
Coffea cultivation with shade tree is used for improving soil health,increasing coffea production,sustaining agro ecology.The study was attended in two kebele,on 36 farmers’fields,at Gololcha district of East Arsi zo... Coffea cultivation with shade tree is used for improving soil health,increasing coffea production,sustaining agro ecology.The study was attended in two kebele,on 36 farmers’fields,at Gololcha district of East Arsi zone.The study was intended to assess the influence of coffea shade trees on farm lands versus mountainous area.Household interviews were used to get imperative separately,i.e.from old farmers,middle age farmers and young farmers.Significant difference value was observed between farm land and mountainous area coverage.Based on this respondents’idea,before 25-30 years;the‘condition of tree coverage at mountainous’area in Arsi Gololcha district was‘medium condition’but not normal that means as deforestation of mountainous area have been starting before 30 years’time;while the condition of tree coverage at farmland area also has been starting before 30 years’time.The third respondents’idea was interpreted with the real situation of the district,that it gave us a constructive inspiration on the role of coffea shade tree to enable the farm land to be taken as regular natural forest.The existing coffea shade trees are Cordia africana followed by Erythrina abyssinica and Acacia senegal.Farmers accounted 95%of coffea shade users and 4.6%without shade users.The respondents said that even if the rainfall intensity is increasing at farmland rather than mountainous area occasionally due to shade tree effect.On the contrary side,mountainous area exposed to deforestation since the farmers have been shifting to hilly side for their livelihood dependency. 展开更多
关键词 farm lands versus mountainous areas Ecological value of Coffea shade trees
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区域经济发展Data Farming决策支持技术及其应用 被引量:1
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作者 彭敏晶 林健 《系统管理学报》 北大核心 2008年第5期514-519,共6页
为解决现有的决策支持技术不能解决的区域经济历史数据稀少的问题,提出了区域经济发展Data Farming决策支持技术。所提出的技术采用基于智能体仿真的Data Farming技术,对参数空间进行遍历搜索,以利用各个参数值对应的仿真结果来获取大... 为解决现有的决策支持技术不能解决的区域经济历史数据稀少的问题,提出了区域经济发展Data Farming决策支持技术。所提出的技术采用基于智能体仿真的Data Farming技术,对参数空间进行遍历搜索,以利用各个参数值对应的仿真结果来获取大量的数据,使决策者可以有效地识别到系统的最优控制值,并了解在控制值下的系统风险性。最后,以江门市社会消费品零售总额的控制优化为例,说明了该技术的有效性。 展开更多
关键词 区域经济 决策支持 DATA farming 智能体仿真 社会消费品零售总额
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Stand Structure, Diversity and Regeneration Status of Woody Species in Open and Exclosed Dry Woodland Sites around <i>Molapo</i>Farming Areas of the Okavango Delta, Northeastern Botswana 被引量:2
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作者 John Neelo Demel Teketay +1 位作者 Keotshephile Kashe Wellington Masamba 《Open Journal of Forestry》 2015年第4期313-328,共16页
Stand structure, diversity and regeneration status of woody species were investigated in open and exclosed dry woodland sites in Island Safari, Shorobe and Xobe, northeastern Botswana. A total of 105, 111 and 130 quad... Stand structure, diversity and regeneration status of woody species were investigated in open and exclosed dry woodland sites in Island Safari, Shorobe and Xobe, northeastern Botswana. A total of 105, 111 and 130 quadrats, measuring 20 × 20 m each, were laid down along parallel line transects in the three sites, respectively, to collect data. A total of 47 species, representing 16 families and 24 genera, were recorded in the study sites. Of these, 33 species representing 13 families and 20 genera, 41 species representing 15 families and 23 genera and 27 species representing 10 families and 14 genera were encountered in Island Safari, Shorobe and Xobe, respectively. The most diverse family was Fabaceae followed by Combretaceae and Tiliaceae at all the three sites. The most diverse genus was Acacia, followed by Combretum and Grewia. The diversity of woody species in the study sites were 2.18, 2.15 and 1.5 in Shorobe, Island Safari and Xobe, respectively, while their corresponding evenness values were 0.6, 0.6 and 0.5, respectively. The mean densities of the woody species encountered in Island Safari, Shorobe and Xobe were 2629, 4271 and 2745 individuals ha&#451, respectively. The five densest species were Colophospermum mopane, Dichrostachys cinerea, Acacia tortilis, Philenoptera violacea and Terminalia prunioides in Island Safari, C. mopane, A. tortilis, A. erioloba, P. violacea and D. cinerea in Shorobe and Acacia mellifera, A. tortilis, P. nelsii, A. luederitzii and A. erubescens in Xobe. The highest important value index values were exhibited by C. mopane, D. cinerea, A. tortilis, P. violacea and T. prunioides in Island Safari, C. mopane, A. erioloba, A. tortilis, P. violacea and C. imberbe in Shorobe, and A. mellifera, A. tortilis, P. nelsii and A. luederitzii in Xobe. The alarming result was the fact that 71%, 80% and 85% of the woody species recorded in Island Safari, Shorobe and Xobe, respectively, exhibited hampered regeneration and, thus, unhealthy population structures. Therefore, there is an urgent need to address the observed unhealthy population structures of the woody species through investigation of the major causes of their hampered regeneration, and also designing measures that will facilitate natural and artificial regeneration of these species at the three study sites. 展开更多
关键词 Anthropogenic Disturbance Area EXCLOSURE Deforestation Density DIVERSITY Flood Recession (Molapo) farming Important value Index Population Structure REGENERATION
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Small-Scale Tomato Cultivators’ Perception on Pesticides Usage and Practices in Buea Cameroon 被引量:1
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作者 Tinyami Erick Tandi Choi Jae Wook +2 位作者 Tumenta Terence Shendeh Eko Alain Eko Chick Ofilia Afoh 《Health》 2014年第21期2945-2958,共14页
It has been shown that farmers with limited knowledge of the use and safe handling of pesticides may suffer exposure which results in adverse health effects. In Buea, Cameroon, small-scale tomato farmers commonly use ... It has been shown that farmers with limited knowledge of the use and safe handling of pesticides may suffer exposure which results in adverse health effects. In Buea, Cameroon, small-scale tomato farmers commonly use pesticides for pest control. Information was obtained from these tomato farmers to determine the extent and types of their pesticide use, their knowledge of pesticide use and effectiveness, and their perception of potential harm resulting from pesticide use. A standardized questionnaire, interviews, field observations and an analytical ranking game were used to describe the pesticide use of 93 tomato farmers. Many farmers (47.6%) used pyrethiod and organophosphorus insecticides and identified these chemicals as the most effective in pesticide control;these are WHO Class II pesticides which are the most hazardous to humans. Most farmers (83.8%) used knapsack sprayers to apply pesticides, with 76.3% using no or partial personal protective equipment (PPE). It was notable that 55.5% of farmers expressed no concern regarding the wind direction (pesticide drift) during spraying. The results showed a significant association between the method of pesticides application and farm size (P < 0.001). Most farmers (85.0%) reported at least one symptom of acute pesticide poisoning following spraying. This study revealed that the tomato farmers have a high exposure to pesticides secondary to inadequate knowledge of the safe and judicious use of pesticides. Strategies that provide training on the appropriate use of pesticides, how to reduce exposure to and health risks of pesticides and alternative options of pest management and control are required. The study also raised concerns that further control of the sale and distribution of pesticides may be indicated. 展开更多
关键词 small-scale farming TOMATO Cultivation PESTICIDES POISONING Cameroon
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Nature-Resource Potential of the Carpathian Region of Ukraine and Specificities of Its Use by Farming Enterprises 被引量:1
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作者 Valeriy Rudenko Myroslav Zayachyk Mariya Palamaryuk 《Natural Resources》 2013年第3期257-262,共6页
Method of nature-resource potential cost revaluation is suggested. The method proceeds from natural crop yield of Ukrainian lands provided that crops rotation is observed and lands are operated only mechanically with ... Method of nature-resource potential cost revaluation is suggested. The method proceeds from natural crop yield of Ukrainian lands provided that crops rotation is observed and lands are operated only mechanically with the use of no fertilizer. Nature-resource potential of Ukraine and its Carpathian Region are assessed in the aspect of administrative oblasts. Specificities of nature-resource potential’s use by farming enterprises are characterized. Peculiarities that effected upon formation of farming in Ukraine are reviewed. Indices of land availability are presented. 展开更多
关键词 Ukraine NATURE RESOURCES value Assessment Carpathian REGION of Ukraine farming ENTERPRISES
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A Unit Study of Externality of Shrimp Farming on Provisioning Services (Paddy Farming)
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作者 Suvendu Das Prosenjit Saha +2 位作者 Arnab Banerjee Manaswee Maity Santanu Ray 《NASS Journal of Agricultural Sciences》 2019年第2期13-18,共6页
Externality;the term can define as a positive or negative impact from either production or consumption of goods or services.Services provided by particular location have very specific dependency on spatial characteris... Externality;the term can define as a positive or negative impact from either production or consumption of goods or services.Services provided by particular location have very specific dependency on spatial characteristics of that region.A region’s distinct characteristics make it ecologically unique from other such regions.Ecosystem services are offered by these regions thus differ according to these unique ecological features.In this particular study,artificially imposed expansion of coastal shrimp farming towards the inland and its impact over paddy cultivation have been addressed.Optimization of the extent of this manipulative coastal expansion has been supported by little modification of a previously described model.Here the investment prediction for both shrimp and paddy farming has been investigated by calculating net present value(NPV).Shrimp farming has very specific externality on local ecosystem services.In this particular case,some contradictory results are presented and with respect to positive or negative externality;but the externalities are strong.NPV results indicate that there is no long-term profitability in case of shrimp farming.Hence,an overall externality of shrimp farming has been described in context of this study. 展开更多
关键词 Shrimp culture Altered ecosystem services Paddy farming Spatial influence Net Present value EXTERNALITY
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Characterization of Farming Systems Using Land as a Driver of Production and Sustainability in the Vhembe District, Limpopo, South Africa
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作者 Fenji Materechera Mary Cathrine Scholes 《Agricultural Sciences》 2021年第11期1352-1373,共22页
South African agricultural farming systems are characterised by a duality in which there exists large-scale commercial farmers and small-scale farmers. Large-scale commercial farmers, historically identified as capita... South African agricultural farming systems are characterised by a duality in which there exists large-scale commercial farmers and small-scale farmers. Large-scale commercial farmers, historically identified as capital intensive and characterized by the size of the landholdings, are considered as the main drivers of national food security. Small-scale farmers on the other hand are viewed as important drivers of food security at the household level. These two main farming systems can be found within the Vhembe district municipality of the Limpopo Province and are characterised differently according to land descriptors. The study used an analysis of primary data obtained from in-depth interviews and secondary data obtained from an agricultural database to identify and characterize large- and small-scale farming systems within the Vhembe district. The study examined the land resource namely farm size and land ownership, topography and soil description, rainfall and its variability and threats and hazards used under three different high value crop (HVC) commodities, macadamia nuts, mangos and avocado pears. The study further examined yield and income from farming as drivers of production that would ensure the sustainability of long-term food security at both national and household level. The study revealed that gender of farmers within the farming systems was predominantly (79%) male across all commodities. Age distribution results showed an aging population of farmers mostly (90%) above the age of 51. Communal land ownership was the dominant (74%) land ownership amongst participants. Yield is not solely dependent on farm size and requires consideration of a broader array of land management aspects. There was a strong, significant correlation between income and farm size. These factors have implications for sustainability of the two farming systems and illustrate how certain aspects of land as a driver of production such as land ownership, rainfall variability, yield and income from farming can impact sustainability. 展开更多
关键词 High-value Horticulture Crop Systems PRODUCTION farm-Size LAND SUSTAINABILITY Food Security
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An ecological value evaluation method based on ecological restoration:A case study of the Saihanba Mechanized Forest Farm in Chengde City
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作者 Chao Li Feng Yang +1 位作者 Maomao Yan Ying Qu 《Chinese Journal of Population,Resources and Environment》 2024年第4期493-500,共8页
As China continues to develop its ecological civilization,it is crucial to quantitatively assess the ecological value to understand its potential impact on regional sustainable development.While previous studies have ... As China continues to develop its ecological civilization,it is crucial to quantitatively assess the ecological value to understand its potential impact on regional sustainable development.While previous studies have highlighted the importance of ecological value,they have not fully reflected the value of ecological restoration work or considered social costs and benefits,lacking a people-centered approach.Hence,this study analyzes the essence of ecological value from the perspective of sustainable development.By studying emblematic ecological restoration areas such as the Saihanba Mechanized Forest Farm in Chengde City,it aims to identify the significance of ecological restoration efforts in enhancing regional sustainable development capacity.The results underscore the necessity of comprehensively considering the value chain from ecological construction to ecological output,highlighting the value of ecological restoration in the ecological construction process as well as the well-being of people in the ecological output process.This approach assigns more economic and humanistic attributes to ecological value,thereby better serving the development of ecological restoration areas. 展开更多
关键词 Ecological value Ecological restoration Evaluation methods Sustainable development Saihanba Mechanized Forest farm
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Comparative study of the nutritional composition and toxic elements of farmed and wild Chanodichthys mongolicus 被引量:3
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作者 姜海峰 程小飞 +3 位作者 耿龙武 汤施展 佟广香 徐伟 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2017年第4期737-744,共8页
Information of the difference in quality between farmed and wild fish is central to better ensuring fish products produced in aquaculture meet regulatory and consumer requirements. Proximate composition, amino acid an... Information of the difference in quality between farmed and wild fish is central to better ensuring fish products produced in aquaculture meet regulatory and consumer requirements. Proximate composition, amino acid and fatty acid profiles, and toxic elements contents of fanned and wild Chanodichthys mongolicus were established and compared. Significantly higher crude protein content while lower moisture content in farmed fish compared to wild fish were observed (P〈0.05). The percentages of total amino acids (TAA), total essential amino acids (TEAA), total non-essential amino acids (TNEAA) and total delicious amino acids (TDAA) in farmed fish were all significantly higher than those in the wild equivalent (P〈0.05). Compared to the FAO/WHO recommended reference values, the ratios of TEAA/ TAA (39.84%o-40.33%) were comparable to 40% and TEAA / TNEAA (66.22%-67.60%) were above 60%. Fatty acid profiles in both farmed and wild C. mongolicus were dominated by monounsaturated fatty acid (MUFA), with farmed fish contained much more MUFA content compared to wild counterpart (P〈0.05). Notably, wild fish exhibited significantly higher levels of total polyunsaturated fatty acid (PUFA) including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) than fanned fish (P〈0.05). The EPA (C20:503) and linoleic acid (C18:206) were the predominant PUFA in wild and farmed C. mongolicus, respectively. Moreover, farmed fish displayed an overall lower toxic element levels (As, Cd, Pb and Hg) in comparison with wild fish, and both were far lower than the established limit standard. In conclusion, our results suggest that the nutritional quality of fanned C. mongolicus was inferior to their wild counterpart with respect to fatty acids nutrition, and therefore further studies should focus on the improving C. mongolicus diet in order to enhance the overall nutritional composition. 展开更多
关键词 Chanodichthys mongolicus farmed versus wild nutrition value quality safety
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论高校耕读教育的当代价值与实现路径 被引量:2
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作者 郑可春 薛鹤南 焦傲 《镇江高专学报》 2024年第2期68-71,共4页
耕读文化是中国几千年农耕实践过程中形成的文化形态,蕴含着自强不息的奋斗精神、身体力行的实干理念、全面发展的人才价值观念。应重塑耕读文化,强化高校耕读教育,大力培养知农爱农新型人才。分析当前高校耕读教育存在的现实困境,探索... 耕读文化是中国几千年农耕实践过程中形成的文化形态,蕴含着自强不息的奋斗精神、身体力行的实干理念、全面发展的人才价值观念。应重塑耕读文化,强化高校耕读教育,大力培养知农爱农新型人才。分析当前高校耕读教育存在的现实困境,探索构建耕读教育课程体系、强化师资队伍建设、提供社会实践平台、打通教育传播渠道的破解策略。 展开更多
关键词 高校 耕读文化 耕读教育 社会主义核心价值观
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中华优秀农耕文化融入涉农高校思政课教学的价值及路径 被引量:1
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作者 王颖 《辽宁农业职业技术学院学报》 2024年第1期44-48,共5页
中华优秀农耕文化蕴含了丰富的思想政治教育资源,与涉农高校思政课教学目标契合相通。优秀农耕文化融入涉农高校思政课教学对于落实立德树人根本任务、为乡村振兴输送新型农业人才、实现涉农高校思政课守正创新、坚定文化自信具有重要... 中华优秀农耕文化蕴含了丰富的思想政治教育资源,与涉农高校思政课教学目标契合相通。优秀农耕文化融入涉农高校思政课教学对于落实立德树人根本任务、为乡村振兴输送新型农业人才、实现涉农高校思政课守正创新、坚定文化自信具有重要的现实价值。优秀农耕文化融入涉农高校思政课教学面临融合客体对农耕文化的了解不深认同不强、融合主体农耕文化素养不高、教学中“供给”和“需求”矛盾、融入形式缺乏创新等主要问题。切实加强优秀农耕文化融入思政课的实效性,关键要做好加强队伍建设,提升教师教学能力素养,坚持在思政课理论教学、实践教学、网络教学中融入优秀农耕文化,形成“三位一体”协同融入,实现思政课与优秀农耕文化的深度融合。 展开更多
关键词 中华优秀农耕文化 涉农高校 思政课 价值 路径
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Output Value of Farming,Forestry,Animal Husbandry and Fishery
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作者 Li Renyuan Wu Hui 《中国经济景气月报》 2003年第11期123-123,共1页
The output value of farming,forestry,animal husbandry and fish-ery refers to the total volume of all the products of farming,forestry,animal husbandry and fishery in monetary terms as wellas the value of various servi... The output value of farming,forestry,animal husbandry and fish-ery refers to the total volume of all the products of farming,forestry,animal husbandry and fishery in monetary terms as wellas the value of various service activities supporting the produc-tive activities of farming,forestry,animal husbandry and fishery.It reflects the total scale and total results of farming,forestry,animal husbandry and fishery in a certain period.1.The accounting coverage of the gross output value offarming,forestry,animal husbandry and fisheryThe statistical coverage of the gross output value of farming,forestry,animal husbandry and fishery includes all the produc-tion units of farming,forestry,animal husbandry and fishery,which belong to the various types of economic organizationsand various systems,as well as all the units engaged in the pro-ductive activities of farming,forestry,animal husbandry 展开更多
关键词 Output value of farming Forestry Animal Husbandry and Fishery
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碱性清洁剂安全性及对PEDV杀灭效果的评估
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作者 欧阳康 黄夏玲 +8 位作者 黄家宝 秦秋英 曾令佑 冯晋平 牛宇峰 覃一峰 陈樱 韦祖樟 黄伟坚 《广西农学报》 2024年第3期34-40,共7页
近年来,猪病毒性腹泻在我国流行日趋严重,引起仔猪大量腹泻和死亡,给养猪业带来巨大的经济损失。研究评估了碱性清洁剂对猪流行性腹泻病毒(Porcine epidemic diarrhea virus,PEDV)的杀灭效果,为猪场选用合适的清洁消毒剂提供参考。通过p... 近年来,猪病毒性腹泻在我国流行日趋严重,引起仔猪大量腹泻和死亡,给养猪业带来巨大的经济损失。研究评估了碱性清洁剂对猪流行性腹泻病毒(Porcine epidemic diarrhea virus,PEDV)的杀灭效果,为猪场选用合适的清洁消毒剂提供参考。通过pH值测定、细胞增殖和细胞毒性实验以及细胞病变观察测定不同浓度碱性清洁剂A、B和NaOH对Vero细胞增殖活性的影响以及在有机物干扰条件下碱性清洁剂对PEDV的杀灭作用。NaOH对Vero细胞增殖活性无影响的最高稀释浓度为0.03125%,而碱性清洁剂A和B分别为2%和0.5%,在安全性上优于NaOH;在含有不同浓度血清的环境下,碱性清洁剂A、B浓度达到0.5%时均能杀灭病毒。研究证明,碱性清洁剂在体外对PEDV有一定的杀灭效果,可用于猪场的清洗消杀,帮助养殖场做好疫病防控。 展开更多
关键词 碱性清洁剂 猪流行性腹泻病毒 PH值 病毒杀灭 猪场应用
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农耕文化融入高校外语教学的价值意蕴与实践路径
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作者 朱山姊 《牡丹江教育学院学报》 2024年第5期67-72,共6页
农耕文化是中华文化之根本,也是构建中华民族核心价值观的精神资源。农耕文化融入高校外语教学具有丰富的价值意蕴,但同时也面临诸多困境。将中华优秀传统农耕文化融入高校外语教学应在内容依托式教学理念指导下,坚持以课程为主导,健全... 农耕文化是中华文化之根本,也是构建中华民族核心价值观的精神资源。农耕文化融入高校外语教学具有丰富的价值意蕴,但同时也面临诸多困境。将中华优秀传统农耕文化融入高校外语教学应在内容依托式教学理念指导下,坚持以课程为主导,健全校社协同育人机制,注重虚实并重的教学方法,达成思言融合的教学成效。结合该路径对浙江农林大学涉农专业学生的外语教学进行改革,并对改革效果进行评价。 展开更多
关键词 农耕文化 外语教学 价值意蕴 实践路径
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森林生态产品价值实现的生态产业化经营实践与探索——以腾冲市沙坝国有林场为例
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作者 马裕霞 刘娟 +3 位作者 姚能昌 邢晓琳 徐昀 杨倩 《内蒙古林业调查设计》 2024年第1期77-80,共4页
文章阐述了腾冲市沙坝国有林场探索森林生态产品价值实现的生态产业化经营实践现状,分析研究了其在资金、用地、经营权限、价值评估、收益分配等方面存在的问题,并提出了相关优化措施与政策建议,以期进一步提升生态产业化经营水平,促进... 文章阐述了腾冲市沙坝国有林场探索森林生态产品价值实现的生态产业化经营实践现状,分析研究了其在资金、用地、经营权限、价值评估、收益分配等方面存在的问题,并提出了相关优化措施与政策建议,以期进一步提升生态产业化经营水平,促进以市场为主导的森林生态产品价值实现。 展开更多
关键词 国有林场 腾冲市 森林生态产品价值 实现路径 生态产业化经营
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现货市场环境下考虑条件风险价值的风电场最优售电模型
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作者 尹立敏 向紫炜 +1 位作者 王艺博 王春鹏 《电气应用》 2024年第10期93-100,共8页
随着我国电力市场的逐步开放,风电产业进入市场成为必然的发展趋势,风电场的售电决策和风险评估是其适应市场的关键。为根据风电场在现货市场环境中对风险和收益的不同偏好,提出相应的售电决策,使得收益最大化和风险最小化。提出了一种... 随着我国电力市场的逐步开放,风电产业进入市场成为必然的发展趋势,风电场的售电决策和风险评估是其适应市场的关键。为根据风电场在现货市场环境中对风险和收益的不同偏好,提出相应的售电决策,使得收益最大化和风险最小化。提出了一种考虑条件风险价值的风电场最优售电双层优化模型。将风电场在现货市场中的报量和报价分别作为模型上下层的优化目标进行求解,考虑了预测偏差对售电计划的影响,并以偏差惩罚的形式并入目标函数,同时运用条件风险价值法来控制风电场出力的不确定性,得到风电场不同风险偏好下的报量报价曲线以及综合效用。最后,以某地区工程实际数据为例,利用所提模型就不同的风险系数和偏差价格系数对风电场在日前市场中的报量和报价进行了仿真,验证了所提模型的有效性与合理性。 展开更多
关键词 电力现货市场 风电场 售电模型 条件风险价值 双层优化
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