全文获取类型
收费全文 | 665篇 |
免费 | 12篇 |
专业分类
财政金融 | 65篇 |
工业经济 | 50篇 |
计划管理 | 29篇 |
经济学 | 143篇 |
综合类 | 52篇 |
旅游经济 | 4篇 |
贸易经济 | 45篇 |
农业经济 | 179篇 |
经济概况 | 110篇 |
出版年
2024年 | 2篇 |
2023年 | 5篇 |
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 37篇 |
2019年 | 24篇 |
2018年 | 12篇 |
2017年 | 41篇 |
2016年 | 24篇 |
2015年 | 11篇 |
2014年 | 30篇 |
2013年 | 33篇 |
2012年 | 43篇 |
2011年 | 56篇 |
2010年 | 31篇 |
2009年 | 51篇 |
2008年 | 40篇 |
2007年 | 64篇 |
2006年 | 45篇 |
2005年 | 17篇 |
2004年 | 10篇 |
2003年 | 8篇 |
2002年 | 14篇 |
2001年 | 31篇 |
2000年 | 5篇 |
1999年 | 9篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1973年 | 1篇 |
排序方式: 共有677条查询结果,搜索用时 15 毫秒
71.
In 2011, Colombia started a legal land restitution process whereby government institutions help internally displaced people (IDPs) reclaim land dispossessed after 1991 through the violent conflict involving the communist guerilla, paramilitaries and the army. The designated land courts normally covers voluntary sales at the going market price at the time of dispossession, presuming buyers took advantage of the IDPs’ need for money and their low expectations of returning from their current sites of refuge. We study the rise and fall of a commercial cassava operation that started to buy land from IDPs openly in the Montes de María region on Colombia’s Caribbean coast after peace returned in 2007. After losing several land restitution court cases, the company shifted from dairy cattle that required high investments to the less demanding, but also less productive, buffalo to minimize losses in case of future successful restitution claims. The land restitution law will probably be extended beyond the initial 2021 limit due to slow progress, thereby perpetuating the insecure property rights situation that hinders investments in agriculture. 相似文献
72.
该文基于新疆水资源及农业用水现状,以目前的灌溉面积为约束条件,深入分析新疆农业水土资源平衡的可能性。以2000~2013年的相关数据资料为基础,采用灰色关联度分析法分别预测了2015年、2020年、2030年新疆有效灌溉面积和灌溉面积,后验差检验(C值)为0.15和0.16,小于标准判断值0.35,表明预测结果很好。结合回归分析的方法,进一步对新疆农业用水需求进行预测,结果显示有效灌溉面积和灌溉面积的用水量均不断提高。在此基础上,模拟了无农业用水总量控制和农业用水总量控制两种情景下水土资源的平衡性,结果发现无农业用水总量控制条件下是不可能实现水土资源平衡的;在农业用水总量控制的条件下,并且灌溉面积控制在3986.25千公顷或有效灌溉面积控制在3667.98千公顷,才可能实现水土资源平衡。为了实现新疆农业水土平衡,分析了三种解决办法,其中发展节水灌溉是当前有效、可行的解决途径。 相似文献
73.
Tebogo B. Seleka 《Agricultural Economics》1999,20(2):121-133
This study assesses the performance of Botswana's traditional arable agriculture for the 1968-90 period. Growth rate and arable sub-sector production models are specified and estimated to determine how the sub-sector performed over time, and to capture the impact of the Accelerated Rainfed Arable Programme (ARAP). Growth rate model results indicate that cultivated area increased by about 2.2% per year during the 1968-90 period. However, crop output remained unchanged and yields declined by about 6.1% per year during the review period. Sub-sectoral model results reveal that cultivated area, output and yields rose by about 27%, 120% and 74% (respectively) due to the implementation of ARAP. Therefore, ARAP was effective in improving rural household food security and welfare. However, it is further argued that the program was unsustainable since it involved phenomenal government outlays and has led to an unprecedented input substitution from animal traction to tractor traction, which seems to be unjustified given the current economic fundamentals of the country's traditional arable farming. Moreover, the results reveal loss of productivity in the sub-sector over time. Therefore, the challenge facing policy makers is to devise new ways of reversing the current trend. 相似文献
74.
Scott Steele 《Journal of Agricultural Economics》2010,61(1):163-174
Conservation in the agricultural sector is difficult to achieve. A primary complicating factor in achieving conservation is the large number of public good environmental services provided by large numbers of individuals acting under diverse economic and ecological conditions. The complexity of the problem implies that additional consideration must be given to transaction cost economics and the theory of incomplete contracting. Drawing on insights from organisational economics, this paper argues that conservation policy and research could be improved with explicit consideration of the effects of ‘holdup problems’, transaction costs and trust on the provision of conservation services. ‘Bottom‐up’ approaches are promising as they directly incorporate these organisational issues, and the paper concludes with an example of a ‘bottom‐up’ conservation programme, the Ontario Environmental Farm Planning programme. 相似文献
75.
Mahmood Hasan Khan 《Agricultural Economics》2001,24(3):315-328
This study surveys the experience of agricultural taxation in developing countries in the context of the ongoing policy debate about the tax structure and administration affecting agricultural producers. Using the examples of a number of countries, it analyzes the conceptual and practical problems associated with different tax regimes. Governments in most countries have reduced indirect (export) taxes on agricultural producers. However, the revenue from direct taxes on farmers has not increased. A major problem in most countries has been the measurement of (actual) agricultural income. Different measures for presumed income have been used with varying success. They seem to have the most potential for increased revenue in many countries, but their effective implementation is constrained by the political and administrative considerations. 相似文献
76.
The financial crisis arose in the industrial countries, but has affected developing countries through higher interest rates, sharp changes in commodity prices, and reductions in investment, trade, migration, and remittances. For most low‐income countries, shocks that affect food prices or wage rates for unskilled workers seem likely to have the biggest impact on poverty, with the declines in key food prices associated with the crisis helping to reduce poverty. Policies to address the crisis must include measures to deal with: financial sector problems; the resulting reductions in aggregate demand; and the particular vulnerabilities of poor people. 相似文献
77.
传统农业发展受土地、劳动供给的约束,绿色革命产生了以节约劳动与土地为主要特点的现代机械和生物技术的运用,使农业生产边界大大扩展,同时发展经济学家也认识到制度在农业发展中的重要作用。本文从制度变迁存在需求引致型和供给主导型两种模式出发,探讨影响我国农业发展制度变迁不足的一系列因素,并提出相应的对策措施。 相似文献
78.
Wan Leong Fee 《Land use policy》1985,2(4):289-298
Development strategies in the rural economy of peninsular Malaysia are examined in this article. Tactics used have included land settlement schemes, a guaranteed minimum price for paddy, input subsidies, grants, and agricultural credit at low or zero rates of interest. The number of development institutions has been multiplying. However, the author argues that the success of integrated rural development policies must be measured in terms of improved income for farmers. He concludes that Malaysian policy planners have yet to define their objectives clearly and to identify the priority target groups. The result has been little improvement in farm efficiency and rural poverty. 相似文献
79.
Voluntary market-based programs have been proposed as cost-effective means to reduce environmental impacts associated with agriculture. This study examines a relatively new program in Michigan USA, the Michigan Agriculture Environmental Assurance Program (MAEAP), and explores how it might serve to reduce nutrient pollution associated with intensive corn production. Interviews with corn farmers were used to explore reasons for program participation, the extent of management changes, and opinions regarding program effectiveness. Results indicate that most farmers enrolled in the program had already satisfied the majority of the requirements, therefore few changes were made that would result in environmental improvements. Interviews also revealed that in almost all cases, corn farmers were unable to market their products as MAEAP verified. Participation was largely driven by goals to avoid law enforcement and minor financial benefits through insurance discounts. Farmers indicated that a lack of monitoring and enforcement reduced the perceived effectiveness of the program. Most farmers favored direct payments through government conservation programs over MAEAP. This case illustrates the limitations of voluntary and market-based programs to address agri-environmental problems and supports the use of multiple policy approaches. 相似文献
80.
How to reduce poverty in lagging regions remains much debated and underserved with solid empirical evidence. This study illustrates an empirical methodology to analyze the pathways households followed out of poverty and to explore their potential in the future using 2000–2004 rural household panel data from two lagging provinces of China, Inner Mongolia and Gansu. It finds that rising labor productivity in agriculture has been key in understanding poverty reduction in rural lagging areas of these provinces and that it still holds much promise. Circular migration has also been important in Gansu, though less so in Inner Mongolia. On average, rural diversification has not proven to contribute much to poverty reduction and income transfers and agricultural tax abolishment have only helped at the margin. The findings from these two case studies highlight that the scope for reducing poverty in rural lagging regions can still be substantial in agriculture, also when nonagriculture drives national growth. 相似文献