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渭河平原县域农田土壤养分肥力空间特征研究
作者: 李志鹏   来源: 西北农林科技大学 年份: 2014 文献类型 : 学位论文 关键词: 土壤养分   空间变异性   地统计学   养分肥力   时空变化  
描述: 渭河平原地势平坦,气候温和,土壤肥力水平主要受土壤养分含量的影响。本研究选取渭河平原腹地,素有“白菜心”之称的兴平市作为研究区,基于GIS技术支持平台,综合运用传统统计学、数理统计、地统计学等方法,结合“3414”田间肥效试验结果和1980s第二次土壤普查的珍贵历史数据集,研究兴平市农田土壤有机质、
全文:生态环境建设、精准农业的发展,测土配方项目的推进提供科学依据和理论指导。本研究的主要结果: (1)目前,兴平市农田土壤养分含量表现为:13项农田土壤养分属性指标的变异系数介于23.56%~74.87
中国古代害虫观念与防治技术研究
作者: 龚光明   来源: 南京农业大学 年份: 2010 文献类型 : 学位论文 关键词: 观念   防治技术   农作物害虫   中国古代  
描述: 中国古代以农立国,农业丰歉直接关乎社会稳定、人类幸福。因此,农业害虫一直受到关注,人们不断探索、总结其规律及应对措施。在生产实践中,害虫观念、防治技术在继承的基础上不断发展与更新。不同时期害虫观念的变化对防治政策的制定及防治技术的实施产生深远影响。 古代农业害虫以蝗、螟、好蚄及未知名害虫为主,次数依
全文:,隋唐还设置救灾使职,通过监督、安抚等措施加强中央对地方灾害制度的管理,地方也设有相应官职。认识到蝗虫惧怕幡帜、金声的特性,从而利用它吓跑蝗虫。姚崇把火烧和坑埋结合起来取得治蝗成功。此外,对鸟类天敌有
我国农村微型金融服务及风险防范研究
作者: 刘星   来源: 西南财经大学 年份: 2010 文献类型 : 学位论文 关键词: 农村经济   微型金融服务   风险控制   农村金融  
描述: Finance is the core of modern economy. Economy determines finance and finance counter-react to economy. Keeping a virtuous cycle between economic
全文:的基础上,结合我国农村金融风险的现状,探讨农村微型服务的风险防范和安全体系,具有重要的理论和实践意义。 1、论文的主要内容 全文分为前言和正文两个部分。前言部分首先阐述了论文选题的国内外背景和研究意义
新农村公共服务体系的构建研究
作者: 周美岑   来源: 西南大学 年份: 2010 文献类型 : 学位论文 关键词: 公共服务   新农村公共服务   社会主义新农村建设  
描述: est strategic decision. In the "Proposal on the
全文:发展农村经济、提高农业务生产力为根本目的,以生产发展、生活宽裕、乡风文明、村容整洁、管理民主”为总体要求,以培养“有文化、懂技术、会经营”的新型农民为长期目标,以扩大农村公共财政覆盖面为核心手段,可以从
宋朝宣抚使制度研究
作者: 郑丽萍   来源: 河北大学 年份: 2009 文献类型 : 学位论文 关键词: 中央集权   地方军政   行政制度   宋朝   宣抚使  
描述: as the top power in local areas.Famous politician and prime minister in feudal China Li Gang once said,“From the forefather,Xuan Fu was the most important position which can be held by current archon."
全文:的战争、组织军队招募、军队校阅、严明赏罚、体恤军兵、维持军队秩序、调发与管理粮草、武器、战马等军需资料、点检、修筑城池、组织防御、布置战略、平息兵变、叛乱及农民起义、组织并参与对境内少数民族作战
曹魏两大政治集团论析
作者: 王建明   来源: 山东大学 年份: 2009 文献类型 : 学位论文 关键词: 曹魏政治集团   汝颍   谯沛  
描述: Group headed by Cao Cao, Shuzhong Group led by Liu Bei, Jiangdong Group led by Sun Quan. The political bloc led by Cao Cao had the most abundant strength and talents came forth in large numbers. During the long-term expedition two major factions within formed: Ru一Ying Group and Qiao Pei Group. Ru-Ying Group charged civil service mainly and Qiao Pei Group was mainly made up of generals. These two groups had a long-term punitive expedition since Cao Cao fought against Dong Zhuo. Finally they unified vast areas of Northern China and carried out fruitful management, which avoided serious damage in the region by a long war and laid a good economic, political and military foundation for the unification of China in the future. Cao Cao fought against Dong Zhuo at the beginning, seizing Yanzhou, Zhangxiu, Xuhuai, Guandu, the four states, Wuhuan and Jingzhou, beat the seemingly invincible powerful opponents one after another. His forces got stronger and stronger. The two major political groups of Cao Wei supported Caocao on political and military aspects. Because these two groups represented the interests of their own, inevitably buried hidden dangers of can get on well with in adversity but can not share wealth. Ru-Ying Group is represented by the family of Han who was in the name of safeguarding the rule of the Eastern Han dynasty but to protect their interests. They can support Cao Cao's domination, but resolutely oppose his taking over Han dynasty. Qiao Pei Group on behalf of Cao Cao's family numbers who wished to gain greater benefits through Cao Cao's taking over Han dynasty. AD 209 years, The Battle of Red Cliff, which was Cao Cao's great cause of reunification of the most important ended in failure. As the highest strategic staff groups, Ru Ying Group throughout the campaign process simultaneously inconceivable aphasia, and the army of Cao Cao was defeated. Cao Cao became unable to dominate the country again in the rest of his life. This result was what Sun Quan, Liu Bei would like to see, Ru Ying Group was also willing to see it. From the historical records there was no record of staff at the Advanced Medium's death to give people the impression that Ru-Ying Group seemed to have known the defeat in advance. When Cao Cao was still alive, Qiao Pei Group holded the upper hand. But after the death of Cao Cao, Ru-Ying Group strongly supported Cao Pi to be the king. Finally Chen Qun put forward "Jiupinzhongzheng system", which established the family of Han's political monopoly. The two major political groups gradually moved towards a balance. After the death of Wei Ming King, the two major political groups split from co-operation, eventually formed a situation of endless immortality. Cao Shuang and He Yan of Qiao Pei Group were launched by Sima Yi through Gaopingling case when the situation was good. Sima Yi killed Cao Shuang and holded military and political power in the country. He cruelly blowed members of the Group Qiao Pei through a series of charges against them. Then, Jin Dynasty took place Wei. Ru-Ying Group obtained a comprehensive win. While Qiao Pei Group after its three generations with a heavy heart exit stage of history.
全文:和谯沛集团,汝颍集团多以文官为主,谯沛集团多以统兵大将为主,这两大集团从曹操起兵讨董卓始就围绕在曹操身边进行了长期的南征北战,最终统一了中国北方的广大地区,并对这一地区进行了卓有成效的管理,避免了长期
敦煌绿洲农业生态安全评价
作者: 白杨   来源: 西北师范大学 年份: 2009 文献类型 : 学位论文 关键词: P   R模型   S   多层次多目标模糊优选模型   农业生态安全   敦煌绿洲   熵值法  
描述: e.
全文:,以联合国规划署的压力-状态-响应(P-S-R)概念模型为基础选取评价指标,利用生态安全评价模型对敦煌绿洲农业可持续发展的生态安全进行定量评估,以期为敦煌绿洲农业可持续发展和生态安全的管理提供科学依据
陕北地区特色农业发展战略研究
作者: 卢小雅   来源: 西北农林科技大学 年份: 2009 文献类型 : 学位论文 关键词: 战略研究   特色农业发展   陕北地区   农业可持续发展  
描述: as well as improving market competitive power to highlight the regional characteristic and allocate production factors according to the entire resources superiority and characteristic as well as market demand by advanced technology so as to establish the non-balanced and distinctive agricultural production system characterized by moderate scale, favorable benefit and strong market competitive power.
全文:的问题是:土地资源相对不足且退化严重,水土流失加剧,自然灾害频繁,土地污染严重,人地矛盾突出,宏观管理失控等,这些限制因素直接影响到该地区农业可持续发展。本文以农业推广学、农业市场学、资源经济学的基本原理
论玉树马术文化及其特点
作者: 索南求着   来源: 中央民族大学 年份: 2009 文献类型 : 学位论文 关键词: 马术文化   玉树藏族   特点  
描述: 在玉树现代社会当中,马文化的发展是伴随着玉树人民生活情趣的提高而逐渐发展和变化的,在玉树人民的生产生活等各方面都在飞速发展的过程当中,依然能感受到传统文化的存在。在玉树人民心目当中,传统文化的存在和发展,使绿草如茵的原野也因为“马”的存在而变成了“奔腾”的草原盛会。 玉树马术文化从客观上反映了玉树藏
全文:,青海省人民解放军军政委员会驻玉树特派员办公处成立,宣告玉树地区已完全由人民政府行使管理职能。1951年12月25日成立玉树藏族自治区,1955年改为自治州。自此开始在玉树州扎西科草原上开始进行
清代灾荒救济法制研究
作者: 郑庐   来源: 中国政法大学 年份: 2009 文献类型 : 学位论文 关键词: 清代   立法效果   灾荒救济法制   荒政  
描述: 荒政在我国历史悠久,是封建时期国家行政的一个重要方面。历来研究荒政史和荒政制度的著作有很多,但迄今为止专门研究荒政制度中的法律制度的学术成果寥寥无几。笔者认为对保障各项赈灾救荒措施得以施行的灾荒救济法制,有必要给予足够的重视并加以研究。 本文的研究重点是清代灾荒救济法制,之所以选择清代进行研究,概因
全文:朝代的荒政立法成就并有所发展,研究清代即可窥见整个中国封建时代荒政立法的特征和面貌。可以说清代各项救灾措施乃至防灾减灾设施的使用管理皆有法可依,如遇灾荒,各级政府和官员仅需按照法律规定的程序和事项展开
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