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1.
牡丹寒地推广应用解析   总被引:1,自引:0,他引:1  
从牡丹寒地引种栽培的现状和牡丹在园林中的应用两大方面论述了牡丹在高寒地区大面积引种驯化的可行性及推广应用的价值。  相似文献   

2.
以引种的4种宿根花卉为研究材料,对其形态特征、生态习性进行阐述,归纳和总结了4种宿根花卉寒地繁育、栽培技术并对其园林应用方式提出建议,为宿根花卉在寒冷地区的推广应用奠定了基础。  相似文献   

3.
中华金叶榆是目前我国北方高寒地区景观园林中使用量最大的一种彩叶树。现主要存在苗木繁殖速度慢,育苗成本高,苗木质量不高等问题。本文综述了北方寒地扦插育苗快速繁殖中华金叶榆的简易技术和方法,为高寒地区繁殖和生产中华金叶榆苗木提供技术指导和参考。  相似文献   

4.
该文在对寒地黑土区农业生态环境保护的现状和存在的主要问题进行调查研究的基础上,分析了 目前寒地黑土区农业生态环境和防灾减灾法律保障机制的现状及其存在的问题,并在此基础上为构建寒地 黑土区农业生态环境保护和防灾减灾法律体系提出了对策和建议,以期为寒地黑土区农业生态环境和防灾 减灾提供完善的法律保障制度支持。  相似文献   

5.
“寒地黑土”是一种独特的气候和土壤特征。寒地指气候寒冷的地带,黑土是指地表植被经过长时间腐化形成腐殖质后演化而成的土壤。在这种寒冷的气候下形成的黑土,有机质含量高,土壤肥沃,土质疏松,最适农耕。除了肥力高之外,寒地黑土所含的汞、镉、铅和铬、锰等污染物含量部非常低,具有无毒无害的特性。寒地的区域性、黑土的难以再生性以及物产的丰富性,也是寒地黑土的显著特征。寒地黑土是黑龙江省大黑土、大森林、大湿地三宝之一,目前世界上只有美国密西西比河流域、乌克兰大平原和中国东北拥有寒地黑土。近年来,由于人们掠夺式的开发,化肥等产品的过度施用,土地贫瘠化现象日益严重,寒地黑土作为稀缺性资源也因此越发显得珍贵。  相似文献   

6.
采用显微观测法结合冬态滞尘量测定分析法,研究了24种寒地植物的冬态滞尘量与组织器官结构的相关性。结果表明,具有较好冬态滞尘能力的寒地植物包括:紫丁香、红皮云杉、银中杨等,冬态寒地植物的滞尘量与植物宿存组织及其特征、分枝类型等因子密切相关。  相似文献   

7.
该研究以主要处于东北平原地带的寒地黑土区域为对象,文章表述了寒地黑土区域生态农业发展具有的地理、气候、土壤等自然条件和发达的交通网络、丰富的动植物资源、充沛的水系和蓬勃发展的系列产业基础优势。文章分析了当前区域生态农业发展的重点之一是充分合理开发利用生态农业资源,打造寒地黑土生态农业品牌;寒地黑土品牌以黑土文化为品牌价值核心,代表着黑土地域资源特征和天然健康的生态产品品质,是区域内绿色有机物产的公用商标品牌。该文的主要的结论和建议是:在寒地黑土品牌打造过程中应主要从品牌注册、品牌宣传推广、品牌产品认证、品牌统一标准体系、品牌整合保护等方面来不断升级品牌建设;从寒地黑土品牌知识产权保护的策略上要依托商标战略整合品牌,利用农产品地理标志培育品牌,运用涉农专利保护品牌。  相似文献   

8.
寒地野生花卉在城市园林生态修复中的利用价值研究   总被引:1,自引:0,他引:1  
本文针对黑龙江省城市现阶段绿化中存在的主要问题,通过对已引种成功的寒地野生花卉的植被特点、应用前景、开发价值和经济效益等方面的综合分析论述,阐明野生花卉在北方城市园林生态修复中的利用价值,论述了寒地野生花卉在北方城市园林绿化建设中的重要地位和作用.提出了利用野生花卉进行城市园林生态修复的观点,大力倡导把本地野生花卉资源...  相似文献   

9.
中国古典园林主要包含皇家园林、私家园林和寺观园林三大类。在现存的中国古典园林中,寺观园林的数量远大于其他两类园林,且广泛分布于各地风景名胜中,它们不仅种类多样,而且独具特色。本文通过对杭州现存寺观园林的发展历史,文化传承,公共空间的处理,植物配置等方面进行剖析,进一步了解杭州寺观园林独有的造园手法及特色,为当代景观的设计与建设提供参考。  相似文献   

10.
园林不仅能够改善我们的生态环境还拥有观赏价值,具有美化环境的作用,需要相关人员好好的设计和维护,但是园林中常见的病虫害问题对植物具有很大的破坏力,需要对其进行积极的防治,本文就园林防治病虫及实现可持续发展的重要性为出发点,对园林中常见的病虫害做简单分析,然后提出对园林可持续发展的建议。  相似文献   

11.
The primary objective of this paper is to examine changes in the level of output, prices and exports of major export crops resulting from the Structural Adjustment Program (SAP) in Nigeria. THere two main sources of data: the Central Bank of Nigeria (CBN) through its annual reports, Economic and Financial Review, and the Nigerian Federal Office of Statistics (FOS) through its Trade Summaries. Although the SAP led to appreciable increases in output and producer prices, its effects on exports were insignificant. The implications of these for the implementation of the program are explored.  相似文献   

12.
This paper aims to analyse and draw together results from similar studies in England, Switzerland and France which investigated farmers’ understanding of soil and compared it with that of scientists, researchers and advisors (collectively called scientists in this analysis). A range of methods were used across the three studies and different theoretical approaches, looking at forms of knowledge, local practice of knowledge production and conceptions of reality, were employed to explain the results. Despite the different contexts, methodologies and theoretical approaches in the three studies, the results reveal similar patterns of difference in farmer and scientist understanding of soil. In the English study, farmers demonstrate a ‘know-how’ form or intuitive working knowledge of soil while advisors rely on scientifically established forms of ‘know-why’ and seek to understand and explain soil processes. Similarly in the Swiss study farmers’ and scientists’ differing perceptions are directed and shaped by their respective aims, methods and context of work. In the French study, farmers and researchers are shown to have different conceptions of soil, they attribute different meaning to the same activities, and use different words and language to describe the same features. In all three studies understanding is shown to be cultural and contextual, as such an integrative theoretical framework is proposed.  相似文献   

13.
森林生物多样性评价模型的改进   总被引:3,自引:0,他引:3  
针对2002年的评价模型中的不足,提出了新的改进后的森林生物多样性变化的评价模型,并在我国第六次森林资源清查(1999~2003)资料的基础上,对1973~2003年我国森林生物多样性的变化进行了补充评价。评价结果表明:我国森林生物多样性的压力越来越大,压力指数由1973年的100,上升到2003年的199.10,上升了1.99倍;森林物种多样性总体的下降趋势已有一定幅度的改变,森林物种多样性指数增加了31.12%。森林生态系统多样性和森林生物多样性先逐渐上升,尔后又下降,第六次森林资源清查时又有所恢复,并分别上升了4.67个百分点和17.90个百分点。  相似文献   

14.
Although trust research has been extensive and substantial, the constitution and actual merits of trust in land use planning remain nebulous. What do participants of a local land use planning process actually mean when they say they trust the planning committee? How important is participants’ trust in the planning committee in shaping their perceptions of the planning process and their cooperation in it? To explore the everyday meaning of trust in the specific context of local land use planning, semi-structured interviews with the participants of a local planning project in Switzerland were conducted (n = 9). Based on these results, the constitution and the relevance of trust in the responsible planning committee among a wider circle of participants were assessed (n = 66). The results show that participants trust the planning committee if they perceive its members as competent, honest, open, fair, reliable, reciprocating, respectful and committed. Interestingly, a considerable part of trust in the planning committee hinges explicitly on whether the committee incorporates the personal interests of the participant. Trust is indeed vital to participants’ belief that a meaningful discussion and cooperation with the members of the planning committee is possible. However, trust is neither a guarantee for people's approval of planning decisions nor for their cooperation. One implication of the findings is that in order to evaluate trust-building practice comprehensively, it is necessary to first understand the specific everyday meaning of trust for ‘real people’ in real planning processes.  相似文献   

15.
天津市地矿局注重加快转变经济发展方式,发挥地质工作优势,推进低碳清洁能源的开发利用创新和技术进步,紧紧依托地质工作的人才、技术和行业优势,加大清洁环保资源的勘查、研究、开发、利用。针对天津市水资源缺乏的情况,积极加强后备和应紧水源勘查。按照“两种资源,两个市场”的思路,通过实施中外合作勘查项目,以境外勘查工作为载体和平台,实施引进来和走出去战略,为天津市经济社会发展提供地质技术支撑。  相似文献   

16.
Since the late 1980s, markets involving agricultural land have emerged in the Socialist Republic of Vietnam. One major reason is that collective farms, previously a central feature of the country's political economy, ended. And a major reason for that was villagers' everyday politics gnawed the underpinnings of the collectives until they collapsed. Rural households, for the most part, wanted to farm separately. Today they do. Land is not privatized, however. Farming households have land use rights, not ownership. This tempers markets, as do other conditions arising from contending schools of thought in Vietnam about how land should be used, distributed and regulated.  相似文献   

17.
This project was initiated to promote conservation agriculture (CA) in Tanzania so as to improve the food security and rural livelihood of small- and medium-scale farmers through the scaling-up of CA as a sustainable land management (SLM) tool as well as increasing the numbers of SLM-CA farmer field schools (FFS) in communities. The project had two phases from 2004 to 2010. It was funded by a Government of Germany trust fund and implemented by the Food and Agriculture Organization of the United Nations (FAO) and the Ministry of Agriculture in Tanzania. The project pilot districts include Arumeru (Arusha and Meru Councils), Karatu, Babati, Hanang and Moshi districts. CA has been shown to offer positive elements that could contribute to fighting hunger and poverty.  相似文献   

18.
Abstract

California is one of the world's largest wine producers, yet it has exported only a small portion of its products. Many US wineries want to pursue opportunities in foreign markets but only a few are actually doing this successfully. Therefore, this study attempts to identify the successful practices of 12 California wineries that have achieved their financial targets and other export goals. A qualitative research design of in-depth interviews was employed. Results indicate that there are 5 major success factors, with the two most important being the foreign partner relationship and top management vision and commitment to exporting.  相似文献   

19.
A survey of agribusiness firms identifies characteristics associated with above average starting salary offers in the allied fields of agribusiness, agricultural economics, business, and economics. A complementary survey is made of students at Texas A&M University and University of Georgia. Results show that firms value work experience and leadership experience more than students do, whereas students value raising grade point average and interview preparation more than do firms. Students seeking a firm's maximum starting salary offer will need to enhance academic performance with substantial work experience and leadership experience.  相似文献   

20.
Progress in the Doha Round is assessed against the changes tothe common agricultural policy (CAP) brought about by the Fischlerreforms of 2003–2004, and that proposed for sugar. Anelimination of export subsidies could place EU exports of processedfoods at a competitive disadvantage because of high sugar andmilk prices. Provided the single payment scheme falls withinthe green box, the likely new limits on domestic support shouldnot be problematic for the post-Fischler CAP. However, an ambitiousmarket access package could open up EU markets and bring pressurefor further reform. If there is no Doha agreement, existingprovisions will continue to apply, but without the protectionof the Peace Clause; and increased litigation is likely. FurtherCAP reform is to be expected.  相似文献   

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