阿克苏绿洲种植制度演变规律及发展对策

作者： 鱼静   来源： 新疆农业大学 年份： 2009 文献类型 ： 学位论文 关键词： 演变规律   发展对策   种植制度   阿克苏绿洲   驱动力  

描述： rategic adjustment of structure in agriculture and rural economics, work relating agriculture, rural areas and farmers remains top priority. Especially in China's accession to the WTO and national implementation of the western development strategy, the market-oriented agriculture, the process of internationalization for Aksu oasis agricultural production has brought greater opportunities and challenges.

全文：粮食安全进行评价与预测、深入研究阿克苏绿洲种植制度演变发展对策,为阿克苏绿洲建立合理可持续发展的种植制度提供了依据。研究结果表明: (1)自1978年以来,阿克苏绿洲种植业结构逐渐由以粮为纲向粮、经二元结构

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：节水种植模式的产量与节水效益,分析各区主要节水技术的节水效果、经济效益与参与式农民调查结果,主要结论如下: (1)东北灌区面临的主要问题是如何提高农业水资源的利用率,主要通过节水技术的应用与推广来实现

中国古代土壤改良技术研究

作者： 陈凡学   来源： 南京农业大学 年份： 2009 文献类型 ： 学位论文 关键词： 中国古代   农业技术   土壤改良  

描述： eat attention to adopting various techniques to improve soil quality when plowing the soil, so that the soil could keep sustainable fertility and high rate of yield.

全文：、种植、盐碱土改造等措施,来改良土壤。中国古代土壤改良建立在一定的理论基础之上,这包括古代对土壤结构与性状的认识、“地力可变”的思想、“地力常新壮”的学说以及土壤“治之得宜,皆可成就”的理论。古代在土壤

中国古代植物染料研究

作者： 谭光万   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 商品化   中国古代   植物染色技术   染色文化   植物染料   染料作物  

描述： Before the synthetic dye has been invented, all of the world were used the natural dye, especially the vegetable dye for dyeing.

全文：作物种类的归纳总结以及古代植物染色技术的科学分析层面,缺乏对染料作物种植技术,植物染料商品化以及古代常用植物染料与政治文化关系的研究。本研究立足于已有研究成果和相关史料,试图从农业史,经济史,技术史

植物河道水流特性和稳定河相关系研究

作者： 王燕   来源： 中国海洋大学 年份： 2009 文献类型 ： 学位论文 关键词： 仙农熵   水流特性   生态河流   根系加固   河相关系  

描述： made for economic prosperity. At the same time, some man-made natural disasters have been paid more and more attentions , so the research on hydraulic characteristics of the river in recent years has been put on the agenda. Considering the ecological environment, flood control, pollution prevention and control method, and in view of the perspective of the urban landscape as well as the national strategic plan for sustainable development, the research the hydraulic characteristics of river and making river reasonably repair and ecological reconstruction will become a general trend, because that is a kind of remediation measure for human to be done unreasonable exploitation, and it also will be the strong protection of river resources and sustainable model for better using river resources in the future.

全文：、便携式流速仪和界面测定仪进行流场及河道地形测量,探讨了滩地处植被对河宽调整的影响。 本文比较系统、全面地总结了植物河道水流特性及河宽调整问题的研究成果;开展了复式河道滩地植物的动床试验,观测了滩地种植

明清时期西北地区农业灾害研究

作者： 彭莉   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 明清时期西北地区   自然灾害   农业   农村   农民  

描述： cultivation development process to be especialty difficult, frequent occurrence of multiple disasters, the development of the Northwest Territories are important constraints, the reduction of agricultural land, agriculture, the substantial loss of population, agriculture, infrastructure damage, agricultural ecological environment and the poor. Based on this, the north-west areas of the process of agricultural drought introduced varieties, select a variety of agricultural disaster mitigation technology. In this paper, the Northwest Territories to explore the Ming and Qing Dynasties of natural disasters on agricultural production hazards, damage the rural economy and livelihood of the affected farmers. By the six parts.

全文：的整个过程造成了严重危害。 第三章,明清时期西北地区自然灾害对农业生产的影响。频繁的自然灾害使得西北地区农业生产结构发生变化表现在两个方面:一是种植结构发生变化,因地制宜地选种抗灾性能好的农作物和高产

清代伊犁社会经济研究

作者： 张文亚   来源： 西北师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 清代   伊犁   社会经济  

描述： After unifying Xinjiang, Qing dynasty established General governance system to govern Xinjiang on the foundation of early Qing dynasty.

全文：的基本原理,系统地、深入地研究有清一代伊犁社会经济发展的历史过程,着重对其在清代各个不同时段的经略思想、经济政策的制定和实施、民族和人口的迁移分布、农业屯垦及水利建设的兴衰、农作物的种植与分布、开垦范围

甘肃省景泰县农业生态经济系统能值分析

作者： 林长伟   来源： 兰州大学 年份： 2009 文献类型 ： 学位论文 关键词： 景泰县   可持续发展   能值分析   农业生态经济系统  

描述： le to measure and compare all kinds of energy.

全文：: (1)景泰县2007年农业投入总能值及产出总能值分别为7.65×10~(20)sej、9.65×10~(20)sej。投入能值中不可更新工业辅助能所占比例最大。产出能值中种植业和畜牧业能值产出占

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

清代康雍乾时期的民食安全研究

作者： 周全霞   来源： 江南大学 年份： 2009 文献类型 ： 学位论文 关键词： 民食   康雍乾时期   粮食安全  

描述： roblem at all times and in all over the world.

全文：因素方面,先分析中国所处的宏观地理状况,进而具体分析康雍乾时期特有的地理环境;社会因素方面,从清代人均耕地面积的变化、经济作物的广泛种植、非生产性消费与民食的阶层分配差距等角度一一展开论述,提供了一个