中国古代农业灾害防减体系研究

作者： 邵侃   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 农业灾害史   农业灾荒文献   减灾技术   灾荒赈救   灾害预防  

描述： n the 1920s when China was called “the Land of Famine” by an American relief worker, the phrase immediately gained currency.

全文：民在承受各种灾害打击的同时,也开始了认识灾害、防治灾害的探索和实践,采取了各种积极的措施防灾抗灾,取得了巨大的成就,主要表现在救荒制度建设和减灾技术进步两个方面。本文以历史时期的抗灾救荒活动为基本

中国古代农业灾害防减体系研究

作者： 邵侃   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 农业灾害史   农业灾荒文献   减灾技术   灾荒赈救   灾害预防  

描述： n the 1920s when China was called “the Land of Famine” by an American relief worker, the phrase immediately gained currency.

全文：民在承受各种灾害打击的同时,也开始了认识灾害、防治灾害的探索和实践,采取了各种积极的措施防灾抗灾,取得了巨大的成就,主要表现在救荒制度建设和减灾技术进步两个方面。本文以历史时期的抗灾救荒活动为基本

中国古代农业灾害防减体系研究

作者： 邵侃   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 农业灾害史   农业灾荒文献   减灾技术   灾荒赈救   灾害预防  

描述： n the 1920s when China was called “the Land of Famine” by an American relief worker, the phrase immediately gained currency.

全文：民在承受各种灾害打击的同时,也开始了认识灾害、防治灾害的探索和实践,采取了各种积极的措施防灾抗灾,取得了巨大的成就,主要表现在救荒制度建设和减灾技术进步两个方面。本文以历史时期的抗灾救荒活动为基本

历史时期青海地区自然灾害与区域社会经济发展研究

作者： 刘雯   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 青海地区   自然灾害   历史时期   社会效应  

描述： e distinctive features in Western and Eastern of Qinghai's natural disaster in history which based on the historical materials and studied the Interaction Relationship Between the natural disasters and social-economic development, we used the theory and analysis method from the research area of disaster history and agricultural history, try to have a comprehensive investigation between the natural disasters and social-economic development in the history of Qinghai. Firstly, we divided Qinghai into two parts: the eastern and the western, under the study of the geographical features of Qinghai. We summarized the natural disaster of the eastern part mainly as flood, drought, hailstone and frost with distinctive features of variety, continuity and growth accompany while the western is mainly as earthquake and snow disaster with distinctive features of unexpected and severity. Secondly ， as the great influence on agriculture and the resulting changement in agriculture is most profound, so the progress in agriculture sciences is related to withstand the natural disaster in some ways. The paper discussed the natural disasters affected Qinghai's agriculture in history, from the aspect of seed selection 、 production 、 processing and storage to invest the development of mitigation techniques in this area. And for the livestock we investigated in two sides bred of livestock and prevention of livestock, furthermore we invested the mitigation techniques which full of geographical characteristics. Thirdly, the article investigated the relationship between natural disasters and the economic fluctuation in Qinghai from the perspective of the change in population and grain price. And then, we analyzed the influence on regional industrial structure from the aspect of expansion in rural areas, the relationship between agriculture and animal husbandry, disaster-relief crop introduction and the structure of animal species. In the view of pastoral economic exchange, we studied the interaction relationship between the natural disasters and economic development. Finally, we studied the interaction relationship between the natural disasters and social development in Qinghai. What is more, we analyzed the policy which includes grain storage, relieved and help the people in disaster , reduced taxes to control the disaster in history. We wish these could be helpful to the prevention and control of natural disasters in Qinghai today.

全文：很大程度上与抵御自然灾害相联系。文章探讨了历史时期青海地区的农业灾害情况,从选种、生产、加工、储藏的角度对该地区种植业减灾技术的发展进行了考察,对畜牧业则从畜种选育和畜疫防治的角度进行了分析,此外还

小麦蓝矮病植原体β-1，4-内切葡聚糖酶基因的分离、序列分析与致病性测定

作者： 张珏   来源： 西北农林科技大学 年份： 2010 文献类型 ： 学位论文 关键词： 致病性   1   植物病毒表达载体   β   4   原核表达   小麦蓝矮病植原体   内切葡聚糖酶  

描述： Northwest China, this disease was transmitted by Psammotettix striatus in a distinct way.

全文：持久方式专化性传播。表现病症的叶片多为黄化,植株矮缩,叶片厚硬,造成减产,严重时全田发病绝收,极大威胁小麦产量。因此,小麦蓝矮病的研究和防治意义重大。β-1,4-内切葡聚糖酶(FrvX)是一类由真菌

周秦汉晋时期农业灾害和农业减灾方略研究

作者： 卜风贤   来源： 西北农林科技大学 年份： 2001 文献类型 ： 学位论文 关键词： 周秦汉晋   减灾方略   农业灾害   历史研究  

描述： 农业灾害的历史与农业生产的发展相始终。在古代社会，中国农业灾害频繁发生，对农业生产和国民经济造成严重危害和破坏。在现代灾害学昌兴的新的历史形势下，农业灾害史的研究需要汲取灾害学的理论成果，重新审视古代灾害的发生发展及农业减灾的措施和成效。为此，本文研究了周秦汉晋时期的农业灾害和农业减灾方略。全文由三

全文：。 针对历史农业灾害史料处理中存在的法则零乱问题，本文提出了灾害史料灾度等级量化办法，根据现代灾害学中的灾度理论，确立了1度灾害的基准线，在此基础上，依据历史灾害资料的有关信息，以灾区大小、灾情状况和灾期