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在城乡一体化发展的新形势下,农业剩余劳动力大规模地向城市和非农产业转移,这加快了城市化和工业化的进程,与此同时,大量的农民工如何融入城市的问题也愈发凸显。文章认为,劳动力实现合理的转移就业,是促进农民工融入城市,进而推进城乡一体化发展的关键,一方面,农民工进城就业参与城市的建设推进了"三化"(工业化、城镇化、农业产业化)的进程,另一方面,农民工返乡创业服务农村的建设带动了"三农"的发展。 相似文献
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目前,我国的城镇化进程明显快于农业现代化,带来了半城镇化、农村空心化等问题.为促进城乡融合发展提供借鉴,以山东省滨州市为研究对象,深入分析滨州市城镇化与农业现代化发展现状,提出推进新型城镇化与农业现代化协调发展的建议,包括推进农业标准化、注重培养农业科技人才、加快基础设施建设、培育新型农业经营主体. 相似文献
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城镇化是伴随社会经济发展的一个过程和客观发展规律,世界各国发展的实践证明,进入工业化中期阶段之后,城镇化会进入快速发展的时期。我国目前正处在这样一个发展阶段,正确认识城镇化发展规律,重视城镇化过程中可能带来的资源环境问题,采取正确的方针政策,把建设现代农业、生态农业、切实加强农业资源环境保护作为推进城镇化发展的条件和基础,努力促进我国城镇化过程的健康发展,是城乡一体化建设的重大问题。 相似文献
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推进工业化和城镇化的发展,促进城乡一体化发展进程,是我国经济社会发展必须要经历的社会变革。城镇化发展进程中,必然也会改变传统的土地利用格局和耕地利用占比。基于此,分析了城镇化发展对耕地保护的正面效应和反面效应,提出了当前耕地保护面临的几大问题,并提出了耕地保护的对策,以期同行们商榷与讨论。 相似文献
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A comparative-ecological approach for studying the general regularities of soil ecology on the basis of geoinformation systems
is suggested. It has been applied to analyze the distribution of Al-Fe-humus horizons. The quantitative climatic parameters
of soils with Al-Fe-humus horizons have been estimated, and the relationships between them have been established. The applicability
of this approach for assessing the general regularities of soil ecology is shown. 相似文献
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The analysis in this paper is directed at comparing the relative effectiveness of meeting the objectives outlined in the recently passed Clean Air Act Amendments of 1990 through taxation and through regulation. The analytical vehicle used in the analysis consists of a computable general equilibrium model composed of 12 producing sectors, 13 consuming sectors, 6 household categories classified by income, a foreign sector and a government. We find first that, irrespective of what type of strategy is followed, both output and consumption decline. Hence, there is an identifiable and quantifiable tradeoff between economic activity (economic growth) and the quality of the environment. Beyond this, the aggregate loss in production and economic welfare (measured by consumption expenditures and utility) is less under a policy which stresses reliance on alternative fuels than through one that requires the installation of pollution abatement devices. 相似文献
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随着多媒体技术的发展,多媒体技术对教育改革起了很大的推进作用。本文通过在学生中对多媒体课件教学效果的调查,从多媒体教学课件在教学中的作用和地位、制作的过程以及使用者的出发点等方面,对影响到多媒体教学效果的因素进行了分析并提出了自己的解决方法。 相似文献
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跟踪学科前沿,引导学科发展——《农业工程学报》的发展探索 总被引:1,自引:1,他引:1
论述了《农业工程学报》跟踪农业工程学科发展的成功经验,详细分析了未来《农业工程学报》跟踪学科各个专业的报道方向。指出随着学科的发展及时调整学术期刊的报道方向是科技学术期刊的任务和职责,是使期刊保证及时反映相关学科的发展,保持在学科发展中应有的促进作用,在众多期刊的竞争中立于不败之地的保证。在充分分析中国学术期刊面临的形势和问题、机遇与挑战的基础上,提出了学术期刊如何规避不利因素等应对策略,为中国科技学术期刊的发展提供参考。 相似文献
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《农业生物技术学报》2012,(4):435
生物钟在动物植物生理调节中都发挥着重要的作用,但是目前对于其调节机制的了解仍然十分有限。在植物中存在白昼和夜晚的振荡器,这些振荡器包含了拟南芥中已经发现的一些相关的生物钟基因。目前的模型认为白昼振荡器相关基因 相似文献
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The composition of the organic matter of the forest Phaeozem soil of Kostroma oblast, which is unusual in its genesis, was investigated by the method of physical fractionation. The Phaeozems were formed in an automorphic position on loamy sediments of Triasic age. The carbon distribution in fractions of organic substance (OS) is the evidence of the hydromorphic nature of the OS origin. A hypothesis about the cause of the formation of the modern organic profile of the soil during evolution is discussed. 相似文献
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The objects of the study are lime-pine and pine-lime park communities of different age at the Arkhangelsk Estate situated near Moscow. In this research, we study spatial variability of the soil properties depending on the type of studied soil cover parcels and with regard to areas under the crowns and near the trunks. The article shows the influence of the grass cover parcel structure on the properties of the soil. The humidity, the content of carbon and nitrogen, and basal and substrate-induced soil respiration are higher in the 120-year-old pine forest stand than in the 80-year-old one. This is explained by the fact that with the increasing age of the pine phytocenoses, we can observe an increase in diversity of species composition, complication of volumetric-spatial structure due to the overgrowth of undergrowth and understory, changes in the volume of the crown, and dying out of old trees. 相似文献
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物联网是一个集信息通信、数据交换、传感器技术与软件工程于一体的综合性产业,探讨和分析了物联网的结构体系与发展中遇到的安全问题。 相似文献