首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   4382篇
  免费   226篇
  国内免费   56篇
财政金融   132篇
工业经济   50篇
计划管理   542篇
经济学   700篇
综合类   566篇
运输经济   1篇
旅游经济   8篇
贸易经济   537篇
农业经济   1456篇
经济概况   672篇
  2024年   41篇
  2023年   165篇
  2022年   121篇
  2021年   165篇
  2020年   182篇
  2019年   114篇
  2018年   132篇
  2017年   149篇
  2016年   192篇
  2015年   125篇
  2014年   288篇
  2013年   280篇
  2012年   356篇
  2011年   388篇
  2010年   289篇
  2009年   315篇
  2008年   350篇
  2007年   250篇
  2006年   223篇
  2005年   140篇
  2004年   119篇
  2003年   78篇
  2002年   41篇
  2001年   56篇
  2000年   27篇
  1999年   16篇
  1998年   12篇
  1997年   5篇
  1996年   11篇
  1995年   10篇
  1994年   1篇
  1993年   8篇
  1992年   6篇
  1991年   3篇
  1989年   1篇
  1985年   2篇
  1984年   1篇
  1983年   2篇
排序方式: 共有4664条查询结果,搜索用时 593 毫秒
951.
龚映梅  张瑜 《科技和产业》2020,20(1):105-108
社会经济的发展,品牌化、个性化消费理念的普及使得消费者把消费目光转向品牌特色农产品。云南省拥有品种丰富的特色农产品,但在品牌化建设中存在品牌建设滞后的现象。基于此,从分析云南省特色农产品品牌化建设的现状及存在的问题入手,探讨如何更好的推动云南省特色农产品品牌化建设。  相似文献   
952.
The development of rural tourism and tourism to protected areas relies heavily on visitors' appreciation of scenery. This paper assesses visitor responses to Taiwan's changing rural landscapes, which have experienced agricultural decline, and a government-aided shift to rural tourism, with landscapes rapidly transformed from farm production scenery to recreation-oriented scenery. The study describes the changing character of the visual landscape characteristics of the Dongshan River Basin in Yilan County, and the influence of those changes on visitors' landscape preferences. Using a recognized nine landscape characteristics typology, survey results indicated participants believed that agricultural landscapes represented the qualities of historicity, naturalness and ephemera more than tourist landscapes, but showed fewer qualities of stewardship, disturbance and visual scale than tourist landscapes. Participants did not perceive the two types of landscapes differently for their qualities of coherence, imageability and complexity. They also preferred tourist landscapes to agricultural landscapes. For agricultural landscapes, when the qualities of ephemera, coherence, imageability, complexity, visual scale, stewardship, naturalness and historicity increased, participants appreciated the landscapes more. However, as the quality of disturbance increased, participants appreciated both landscapes less. Overall, when ephemera, coherence, imageability, complexity, visual scale, stewardship and naturalness increased, participants liked the landscapes more.  相似文献   
953.
文章对在广西农垦金光乳业有限公司改革取得一定成效的同时,如何进一步加强广西农垦领导班子及企业活力建设的问题进行探讨。  相似文献   
954.
That researchers look for the inverted-U shape in inequality in the arbitrary periods of arbitrary countries underlies the divergent empirical evidence across studies. To point to the right context for the pattern, this paper establishes a formal mechanism in line with Kuznets' explanation that relates to the industrialization-cum-urbanization phases of closed trade regimes. The mechanism involves an interaction among urban–rural sectoral size differences, agricultural tastes/income, and migration, and predicts an inverted-U shape in inequality in the following way: (i) widening differences in the sizes of urban and rural sectors due to exogenous shocks affect negatively the agricultural tastes/income, worsening inequality; (ii) increasing sectoral size differences and decreasing agricultural tastes/income jointly foster intersectoral migration; (iii) migration acts, in turn, as an equilibrating effect, improving the income distribution. Empirically testing these predictions, non-Sub-Saharan developing countries' data support the mechanism, while data from developed and Sub-Saharan African countries provide little support, as per our prior expectations. This highlights a contrasting evidence on the inverted-U shape across country groups of differing development stages.  相似文献   
955.
李珂  史维良 《科技和产业》2023,23(17):92-97
利用2000—2020年的相关数据计算农业和森林碳汇量,研究黄河流域农林碳汇的时空变化特征,并运用地理探测器模型对其影响因素进行分析。结果表明:黄河流域各省份农林碳汇量均有不同幅度的提升,但空间分布不均衡现象仍存在;降水、气温、坡度、坡向及人口数量是黄河流域农林碳汇的主导因子;交互作用的解释力度增强,且以双因子增强型为主;各因素均与农林碳汇有显著差别,可以得到农林碳汇量达到最大的因子范围。  相似文献   
956.
我国是一个农业大国,然而农业保险的发展仍处于初级阶段,相关政策还缺乏一定的科学性,其运营存在诸多困难。本文针对目前政策性农业保险实施过程中面临的问题,从保险公司供给意愿以及农户投保需求的角度,为政府制定政策措施提出了一系列可行的建议。  相似文献   
957.
文章运用豪泰林市场需求模型,从经济学的角度对农产品区域品牌竞争力进行了解析。经过分析认为,农产品所在地域的区域要素,即地域资源禀赋、组织管理能力、农业生态环境等以及消费者对品牌的差别感知,形成了农产品区域品牌竞争力的重要来源。最后通过对分析结论的总结,提出了具有针对性的提升农产品区域品牌竞争力的对策。  相似文献   
958.
The formation of interest groups is path-dependent. The ideology and thus behavior of interest groups cannot be isolated from history, customs, economic conditions and changing alternatives open to individuals. In Australia, there were historical and traditional divisions concerning farmers producing for international markets that depend on flexible world prices and those producing for the domestic market with stabilized and subsidized prices. The National Farmers Federation (NFF) (1979) is the result of a historical-evolutionary-developmental process of preceding agricultural interest groups. Hence, an understanding of the NFF ideology that promotes free competition and the elimination of agricultural subsidies worldwide, in contrast to the agricultural interest groups in the United States and UK, requires an examination, using an institutional and economic complexity approach, of the evolution of agricultural interest groups in Australia.  相似文献   
959.
960.
Preface     
The paper examines the main issues surrounding distributional effects in the domains of natural resource management and land policies, agricultural technology and research policies, agricultural market and trade policies, and consumer‐oriented policies, including standards, subsidies, and labeling. Agriculture is drifting into an ever more drastic bifurcation at a global level and within many countries. Correcting that bifurcation will require large investments in rural areas and rural people, in institutions, and in information and biological technologies accessible by the poor in the world's smallholder sector. Large and growing national and international inequalities related to agriculture and rural areas threaten peace, growth, and sustainable development.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号