按文献类别分组
关键词
西汉时期的西域研究
作者: 周建   来源: 西北师范大学 年份: 2010 文献类型 : 学位论文 关键词: 设置   作用   建制   职责   西汉   西域都护   考述  
描述: office term likely from the BC20 to BC18. Moreover, a Xiyu Duhu named Qing and he worked during AD1
全文:公元前20年至公元前18年。此外,尚有一个名为“青”的西域存在,其任期约在公元1年至公元3年。 最后,笔者对西域的职责和历史作用进行了考证,认为“国”是西域的主要职责,“道”和保障
曹魏时期河西经济恢复原因浅析
作者: 陆庆夫   来源: 社会科学 年份: 2016 文献类型 : 期刊 关键词: 食货志   经济恢复   戊己校尉   中原王朝   金城郡   汉昭帝   羌胡   韩遂   曹魏时期   河西五郡  
描述: 乱”,竟至于“户不满五百”了。随着曹魏政权的建立,河西这块曾经繁荣一时的地方重新被纳入中原王朝的经营范围。史载:“魏文帝即位,分河西为凉州”,“其剌史领戊己校尉,西域”。由于曹魏政权的重视,河西经济很快就得到了恢复。在农业上,据《晋书·食货志》记载,旧
甘州区农业用水的绩效及影响因素分析
作者: 秦宏毅   来源: 兰州大学 年份: 2014 文献类型 : 学位论文 关键词: Logistic回归模型   影响因素分析   农民用水户协会   绩效分析   网络层次分析法  
描述: 随着原有农村灌溉管理制度暴露各种问题,在现实中水资源管理也遇到了一系列的困境。此时,我国灌溉管理制度在国际背景参与式管理热潮下,开始推行农民用水户协会来实现农民自主参与灌溉管理的新制度。成立农民用水户协会后,因为其管水用水更合理,实现了降低了交易费用、明晰了水利工程的产权、并促进了节约用水、增强了农
全文:权重最高,水利工程完好变化率第三。排名第二的指标为投劳管理中的渠投劳变化率;排名最后的为面积管理中的玉米单产变化率指标。指标的权重排序大致可知,工程管理影响最大,其次是投劳管理、节水管理、水费管理
天水蜜桃开花期不同措施防霜效果试验初报
作者: 姚晓红   许彦平   万信   贾建英   李彦军   吴婷芳   来源: 中国农业气象 年份: 2016 文献类型 : 期刊 关键词: 地面覆膜   蜜桃   树冠盖膜   组合   防霜试验  
描述: -3.1℃)两次霜冻天气过程进行防霜试验。结果表明,各种防霜措施均有一定保温防霜效果,其中以树冠盖膜、地表覆膜烟熏和无膜桃园喷药(碧)烟熏3种措施的防霜效果最佳,桃树冠层1m处平均最低温度较对照偏高
《水经注》中记载的农田
作者: 陈桥驿   来源: 中国农史 年份: 2016 文献类型 : 期刊 关键词: 郦注   军事需要   面表   大概情况   《水经注》   西邸   会稽   古代农业   北堂书钞   车箱渠  
描述: 古代为了军事需要而垦殖的驻军屯田。这类屯田,大部分在西域,但也有一些在内地。下面表列的,是这类屯田的大概情况。
《水经注》中记载的农田
作者: 陈桥驿   来源: 中国农史 年份: 2016 文献类型 : 期刊 关键词: 郦注   军事需要   面表   大概情况   《水经注》   西邸   会稽   古代农业   北堂书钞   车箱渠  
描述: 古代为了军事需要而垦殖的驻军屯田。这类屯田,大部分在西域,但也有一些在内地。下面表列的,是这类屯田的大概情况。
《水经注》中记载的农田
作者: 陈桥驿   来源: 中国农史 年份: 2016 文献类型 : 期刊 关键词: 郦注   军事需要   面表   大概情况   《水经注》   西邸   会稽   古代农业   北堂书钞   车箱渠  
描述: 古代为了军事需要而垦殖的驻军屯田。这类屯田,大部分在西域,但也有一些在内地。下面表列的,是这类屯田的大概情况。
唐代西北地区政治地理格局变动研究
作者: 魏昀   来源: 陕西师范大学 年份: 2009 文献类型 : 学位论文 关键词: 唐朝   疆域   羁縻府州   屯田   交通  
描述: th about three of culture and materials the country's territory changed a lot. The country's territory was in an extending period before and the An-Shi Armed Rebellion, and once extended to the Central Asia area.At the same time, the Tang government founded the Ji-Mi-Fu-Zhou system in the Western Regions. The situation changed rapidly when the An-Shi Armed Rebellion broke out. Then the central government mobilized the troops in the Western Regions to participating in putting down the Rebellion, so the border defence was weakened. Tu-bo took the chance to occupy a large amount of territory. Almost Long You Area was oppupied by Tu-bo later in Tang Dynasty. The thesis is divided into five chapters: political geography circumstance in northwest area in early Tang Dynasty,including the situation of physical geography and the nation regime; the political geography situation in the extending period of territory from Tai Zong to Gao Zong;the political geography situation in the stable period of territory from Wu-zhou era to An-Shi Armed Rebellion;the political geography situation in the shrinking period of territory after An-Shi Armed Rebellion;relationship between the change of political geography situation and economy and traffic. Conclusion: From A.D. 7th to 9th century,Asia-Erope Continent was a place where Tang, Da-shi and Tu-bo contended for political space. The country's power of politics, economy and military strengthened before An-Shi Armed Rebellion, and part of the Central Asia area belonged to Tang government. The territory reached to an unparalleled scale at that time, which can be divided into three parts: the capital area where Chang-an and Luoyang were located in was the empire's center of politics, culture and military; the Zheng-zhou that around the captals was where the finance of central government stemmed from; the Ji-mi-fu-zhou system Tang government founded in the frontier area was the military buffer zone with nation regimes in vicnity. At the same time, Tu-bo appeared in the stage of history in A.D 7th century. After the King Song-zan-gan-bu unified the Tibet plateau, Tu-bo's power strengthed rapidly and harassed Tang's frontiers inceasingly. The Tang government put the defense police actively into effect so as to resist Tu-bo's aggression and defend country's benefit in Long-you area. When An-Shi Armed Rebellion broke out, Tu-bo took the chance to occupy vast territory of Tang Dynasty, like Minzhou, Lanzhou, Kuozhou, Guazhou, and so on. Eventually, almost all Long-you areas belonging to Tang Dynasty was occupid by Tu-bo. In the field of geopolitics, the national power strengthened in the earlier stage of Tang Dynasty and stronger than Tu-bo. Tu-bo didn't have the strength contending with Tang Dynasty, even harassed the frontier once a while. Until the An-Shi Armed Rebellion, the Tang government had no more advantage and the national power was weakened.
全文:、廓、河、鄯、洮、岷、秦、成、渭、甘、肃、瓜、西州以及北庭府,趁机占有了唐朝的大片领土,陇右地区几乎全部被吐蕃占有,使唐后期的西部边界仅维持在陇山一线。从地缘政治的角度看,唐朝方面从高祖到玄宗开元
汉代西北屯田问题探析
作者: 牟雪松   来源: 青海师范大学 年份: 2010 文献类型 : 学位论文 关键词: 西北地区   汉代   屯田  
描述: governors of HAN Dynasty. The policy was carried out in most area of the west and the north. In DONGHAN Dynasty, it also appeared in the inner area. The thesis is to tell opening up wasteland and analyses the origin and features of opening up wasteland to get the conclusion: Opening up wasteland in ancient times began in War times and was developed fully in HAN Dynasty. Opening up wasteland in northwest area of HAN Dynasty was only a comprehensive policy to defend the country, including the content of politics 、 military and economy. It was t not for the people but for the country. The policy was spread and lasted for a long time. In economy, it promoted the development of agricultural economy in northwest area by bringing new tools and ways of farming, which also joined the relationship between the central area and the northwest. In politics, it laid a solid foundation for the unity of northwest area and the victory against HUN. In culture, it advanced the communication and joint among different races. Meanwhile, it was a base for opening up wasteland by troops and common people in Cao Wei period.
全文:汉代西北地区的屯田,是汉朝统治者为了经略西北边疆而实行的一种重要举措,主要分布在朔方、河西、西域以及河湟、陇西地区,在东汉时还发展到了内郡。本文通过对汉代西北地区屯田概况的梳理,以及对屯田的起源
黄土高原地区村级农田土壤养分空间变异特征与肥力评价研究
作者: 高义民   来源: 西北农林科技大学 年份: 2005 文献类型 : 学位论文 关键词: 评价   土壤养分   空间变异性   村级尺度  
描述: 农田土壤养分的空间变异性具有普遍性。开展土壤养分空间变异性研究对于科学合理地制定农田施肥方案,提高养分资源利用率,促进变量施肥技术的发展,实现精确施肥具有重要意义。长期以来,国内外关于土壤养分空间变异的研究大都集中在田块级小尺度或县乡级大尺度,而对村级尺度下的土壤养分空间变异性研究很少。村级单位是
全文:农田土壤养分的空间变异性具有普遍性。开展土壤养分空间变异性研究对于科学合理地制定农田施肥方案,提高养分资源利用率,促进变量施肥技术的发展,实现精确施肥具有重要意义。长期以来,国内外关于土壤养分空间
< 1 2 ... 4 5 6
Rss订阅