中国北方地区节水农作制度研究

作者： 王婧   来源： 沈阳农业大学 年份： 2009 文献类型 ： 学位论文 关键词： 北方地区   节水   节水技术   节水农作制度   种植模式  

描述： ium between the grain production and water resource: the drought and the irrigation area in northeast china, the drought and the irrigation region in Huanghuaihai area, the drought and the irrigation area in northwest china.The article analized the characteristic of water using of the main crops and the main cropping systems, compared the economic benefit of the water-saving planting patterns, studied the economic benefit, the water-saving benefit and participatory farmers survey results etc. of the water-saving technologies.

全文：耗水作物,夏棉花、夏玉米与春棉花耗水量与降水量的耦合率好于冬小麦,应适当“压麦扩棉”、“压粮-粮扩粮-经”,以一年两熟为主,适当改小麦-玉米一年两熟为小麦-玉米→春棉花→小麦-玉米三年五熟制;缺水灌区

不同耕作措施对麦—豆轮作条件下土壤有机碳库的影响

作者： 毕冬梅   来源： 甘肃农业大学 年份： 2009 文献类型 ： 学位论文 关键词： 碳素有效率   耕作措施   碳库管理指数   土壤有机碳库   轮作  

描述： 本文以甘肃农业大学定西旱农综合试验站的长期定位试验为基础,对麦-豆轮作次序下不同耕作措施间的土壤有机碳、易氧化碳、微生物量碳以及水溶性有机碳的含量进行了测定,计算了土壤碳素利用效率和碳库管理指数在

全文：各个序列中变化。 本试验设4个处理,即T:传统耕作;NT:免耕不覆盖;TS:传统耕作结合秸秆还田;NTS:免耕秸秆覆盖。主要研究结论如下: (1)两种轮作次序下,NT和NTS处理下的土壤有机碳含量均高于

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：东汉末年,群雄并起,战乱频繁,最终形成以曹操为首的曹魏集团、刘备为首的蜀中集团、孙权为首的江东集团,其中以曹操为首的政治军事集团实力最为雄厚,人材辈出,并在长期征战中形成了内部的两大派别:汝颍集团

古代保健“茶汤”的医学史研究

作者： 苏诺   来源： 中国中医科学院 年份： 2009 文献类型 ： 学位论文 关键词： 医学发展史   保健饮品   茶汤  

描述： ning traditional tea or non-tea drinks (soft drinks).

全文：,分化成茶、汤两大系列。保健“汤”系列还包括“熟水”等类型的饮品。 ⑤元明:元蒙时期的保健饮品受到北方游牧民族饮食习惯的影响,以酥入茶,保健汤品也由咸变甜、制作原料则由香药转向花、果等。保健“茶汤”开始被

明清时期巢湖流域农业发展研究

作者： 陈恩虎   来源： 南京农业大学 年份： 2009 文献类型 ： 学位论文 关键词： 农业经济   农业发展   明清   巢湖流域  

描述： 区域农业经济研究是目前经济史研究的热门课题,至今已有许多成果问世。相对而言,巢湖流域农业经济的研究较为滞后,并且研究领域和成果比较分散,尚未形成全面、系统的研究体系,其主要原因应当是学术界常常会以明清时代的巢湖流域与全国其他区域相比不具备“典型性”为由,漠视了对巢湖流域的经济研究。因此,努力填补明清

全文：成为一种普遍现象,间作制和套种制也在不断发展,一年多熟的耕作制度已十分普遍,开始形成水、旱两种土壤耕作体系,实行水耕、旱耕结合,水旱轮作。土地的合理利用技术也有所发展,主要表现在利用山岗、湖溪、旱地

清代甘肃黄土高原的土地利用

作者： 刘维   来源： 陕西师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 清代   农业技术   土地制度   甘肃黄土高原   土地资源  

描述： ainly chooses three aspects, the quantity and quality of farmland, the land system and agricultural technology, to analysis the fact that the land system, the land utilization patterns and the selection of agricultural technology are constrained by natural environment and land resources, accordingly reveal the main-land relationship which is influenced by natural environment. The thesis is composed of four parts.

全文：农业技术的选择,在一定程度上要受自然条件和土地资源的制约,从而揭示出自然环境影响下的人地关系。全文共分为四个部分。 第一部分说明了甘肃黄土高原土地利用的基础。首先,从自然地理范围和行政区划两方面,对本

清代甘肃黄土高原的土地利用

作者： 刘维   来源： 陕西师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 清代   农业技术   土地制度   甘肃黄土高原   土地资源  

描述： ainly chooses three aspects, the quantity and quality of farmland, the land system and agricultural technology, to analysis the fact that the land system, the land utilization patterns and the selection of agricultural technology are constrained by natural environment and land resources, accordingly reveal the main-land relationship which is influenced by natural environment. The thesis is composed of four parts.

全文：农业技术的选择,在一定程度上要受自然条件和土地资源的制约,从而揭示出自然环境影响下的人地关系。全文共分为四个部分。 第一部分说明了甘肃黄土高原土地利用的基础。首先,从自然地理范围和行政区划两方面,对本

近代中日文化交流中的一侧面

作者： 于春龙   来源： 东北师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 中日文化交流   文献学价值   大金得胜陀颂碑  

描述： hen Characters on the back side, commemorating the victory of Jin Kingdom over Liao kingdom led by Wanyan Aguda.

全文：,考察记录详尽,同时个别学者还录有早期的金碑照片及碑文的拓片,这为此后对于金碑的研究提供了有力的实物资料。拙论中,笔者将在对大金得胜陀颂碑进行实物考察的基础之上,对中日两国关于大金得胜陀颂碑的研究著作

订单农业中农户与龙头企业对契约的博弈研究

作者： 罗迎春   来源： 贵州大学 年份： 2009 文献类型 ： 学位论文 关键词： 农户   龙头企业   博弈研究   订单农业   契约  

描述： e improvement of link-up of production and marketing, the maintenance of market order and the protect of the interests of farmers .However in the process of the development, there appears a

全文：前言部分通过对目前订单农业中所存在的一些问题进行了介绍而引出了研究的主要内容,同时也对国内外的目前的对订单农业的研究现状进行了介绍。第二章分别对订单农业中的农户与龙头企业以及两者的特征与两

明罗汝敬事功研究

作者： 王敬伟   来源： 兰州大学 年份： 2009 文献类型 ： 学位论文 关键词： 罗汝敬   事功   西北开发  

描述： g Bu between Yong Le and Zheng Tong. He had participated in the third recession of ,Ming Dynsty called troops back from An Nan(The Fouth and Fifth Chapter) and affirms his role on the the mutation relationship between Ming Dynasty and An Nan. Luo Rujing took an important part in the development of Shan Xi Military-Farmsettlement for ten years. He had made enormous contribution on Shan Xi Military-Farmsettlement's restoration and water conservancy facilities management. Compared with the later period of Yong Le, Shan Xi military farm settlement has restored greatly on a stage as intermediate period of Xuan De. With Luo Rujing's absent from Shan Xi, Military一Farmsettlement in northwest of Ming Dynasty degraded obviously. "Paeificated Jiao Zhi, Carried out the mission successfully" and had come into ShanXi four times to manage in the opening up wasteland and "He contributes in many aspects".

全文：罗汝敬是明代前期的重要文官,在永乐至正统年间历任侍讲、御史、工部右侍郎等职,曾参与《太祖实录》的第三次修订;两次“抚谕交趾,不辱命”;四次入陕督理屯田,“多所建制”。 本文以罗汝敬的生平为主线,重点