甘肃农业大学农耕特色库

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西部干旱地区农户旱地种植行为实证研究: 作者： 叶晶晶 来源： 南京农业大学 年份： 2010 文献类型： 学位论文 关键词： 农户旱地水资源决策干旱风险; 描述： ncentrated v}}ith 85% of the total dry lands. and it is important for the national economy and the countr<0's strategic agricultural growth. Northwest arid areas basically depend on natural precipitation. water shortage has seriously affected the farmers practices. The decision of farmers to plant dry land is a two-stage decision-making behavior: They first have to decide whether to plant dry land, and then decide what kind of crops planted in the dry lands. It is essential to find effective ways to raise the enthusiasm of farmers planting and reasonable arrangements for dry land crop structure. However. ver}} few people study dry land farming practice from the perspective of water shortages.; 全文：旱地农业生产关系到我国的粮食安全,旱地占全国耕地面积的60%,集中有全国85%旱地的北方地区更是成为了国民经济和国家农业增长的战略要地。西北干旱地区旱地灌溉基本上是以自然降水为主,干旱严重影响了农户

气候变暖趋势下甘肃省粮食供需问题研究: 作者： 王海强 来源： 甘肃农业大学 年份： 2010 文献类型： 学位论文 关键词： 甘肃省粮食供需气候变暖; 描述： Climate change have been one of the most important factors that influence the global development.; 全文：。甘肃省地处黄土高原、青藏高原、内蒙古高原之间和西北干旱区、青藏高寒区、东部季风区三大自然区域的交汇处,降水不足,森林覆盖率低,是一个水资源匮乏、农业生产条件薄弱的内陆省份。农业生产受自然条件的制约很大

青海海西州汉族移民文化变迁及民族关系研究: 作者： 刘瑶瑶 来源： 兰州大学 年份： 2010 文献类型： 学位论文 关键词： 海西汉族移民文化变迁民族关系; 描述： mic development. The fourth chapter discusses the change of marriage culture from aspects of ethnic intermarriage, uxorilocal marriage and village marriage. The fifth chapter mainly investigates and analyzes present situation and characters of Han immigrants' religion belief on Tibetan Buddhism, discusses fusion between Han's folk custom and Tibetan Buddhism. The sixth chapter detailed describes the process of funeral ritual, and illustrates characters and function of funeral ritual. The seventh chapter chooses six variables, namely inhabitation pattern, individual communication, language use, religion belief, national consciousness and social distance, to comprehensively considerate ethnic relation, furthermore concludes the characters of ethnic relation and puts forword several suggestions. The eighth chapter is concluding remarks to this topic, which discusses characters and trends of Han immigrants' cultural change, and concludes characters，influencing factors and tendency of ethnic relations in Haixi immigrant region. Haixi Autonomous Prefecture of Qinghai province lies at northern Qinghai-Tibet Plateau. Most areas are alpine and hypoxia, and natural condition is very bad, which is unfit for agriculture production, so it has been the habitation of nomadic minority groups. As the border area, the past dynasties continuously recruited and migrated Han immigrants to Haixi region to open up waste land and garrison the frontier in order to maintain national stability and secure territorial integrity. For thousands years, in order to improve living environment, develop economy and build multiple cultural; 全文：青海省海西州地处青藏高原北部,大部分地区高寒缺氧,自然条件十分恶劣,不适宜农耕生产,因而自古便是游牧少数民族的聚居地。作为边疆重地,自汉代起,历代中央政府不断从各地招募和迁移汉族群众到海西地区屯田

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