【摘 要】
：
Korean insam(ginseng) is recognized as an indigenous crop of Korea.Direct seeding and transplanting technology were introduced in 1700years already.Dimensions of the seed bed for insam(ginseng); width
【机 构】
：
Han Kyong National Univ.Dept.of Mechanical Engineering
【出 处】
：
中国农业历史学会,日本农业历史学会,韩国农业历史学会
论文部分内容阅读
Korean insam(ginseng) is recognized as an indigenous crop of Korea.Direct seeding and transplanting technology were introduced in 1700years already.Dimensions of the seed bed for insam(ginseng); width of ridge is 120cm and width of furrow was 90cm in those times but width of ridge is 90cm and width of furrow is 90cm in modem times.The planting distance of insam(ginseng) was 4.0cm x 3.6cm(201ines 50rows) and 1,000grains/3.3 m2 with seeding scale (2lines x 20holes) 100 years ago.Nowadays big grain insam(ginseng) seeds planted 3.6cm x 3.6cm(1,200grains/3.3 m2), small grain insam(ginseng) seeds 3.0cm x 3.0cm(1,740grains/3.3 m2) were planted.The planming density was 20% increased for big grain insam(ginseng) seeds and 70% increased 70% for small one.The height of sun roof in 1800years was higher than modem times sun roof.Cultivation of insam(ginseng) was increased various region of Korea recently.But cultivation of insam(ginseng) is one of the most laborious operations requiring an extended human labor hours.Due to the reason, it is necessary to reduce the cost of production and save the labor cost.Cultivation machinery of insarn(ginseng) asked to develop for every working step.Thus, developed for insam(ginseng) cultivation equipments such as ridger, direct seeder, transplanted, digger was introduced to insam(ginseng) farmer now days.But it is very difficult to do work under the sun roof after plant insam(ginseng) because of small scale shadows system.It must be improved to be operating easily with big tractor inside of the sun roof of insam(ginseng) cultivation.
其他文献
为解决目前我国农业循环经济评价中存在模糊笼统的问题,文章提出采用直接由样本数据驱动的PPC模型做出客观评价.选取2010年中国统计年鉴数据—3类17个评价指标,计算31个省、市农业循环经济的影响因素及综合水平,对其最佳投影方向a*和最佳投影值z*(i),并做出排序和分类,结果表明:资源减量投入类、资源循环利用类指标是主要影响因素,需重点解决.建议国家对不同评价类别制定差异化农业循环经济发展策略.
九江是鄱阳湖生态经济区的主阵地,化工产业是九江的主要支柱产业之一.九江化工产业发展的质量高低直接影响着鄱阳湖生态经济区目标地位能否实现.本文通过对九江化工产业的调研,结合地理资源禀赋条件,为九江化工产业生态集群发展提出了切合实际情况的具有可操作性的建议.
产业集群的可持续发展关系到国家、地区经济建设、社会发展,并对资源、环境产生重大的影响.本文借助可持续发展的思想,对产业集群可持续发展的概念进行了界定,揭示了产业集群可持续发展的内涵.在分析了海西产业集群发展的现状和存在的问题的基础上,提出了产业集群可持续发展的战略指导思想、战略模式的选择及战略对策.
农业无毒化泛指生产无化学药剂残留的农渔畜产业流程,主要遵循的是有机农业规范,强调全产业链完全或者基本不使用农药、化学肥料、植物生长调节剂等非天然物质,完全不采用基因改造作物,而使用天然物质驱虫与施肥.同时,通过规范全产业链产销管理,落实终端抽检验证,严格奖罚制度,来保证上市产品符合安全规范.从产业层面看,由无公害农业向绿色农业进而发展到有机农业领域,借助农业清洁生产技术的运用推进无毒化流程实施,这
本文以实践循环经济与绿色发展、构建农业循环经济产业体系为主题,以亚行贷款河川农业综合开发项目为平台,发展优势农业主导产业为重点,探索农业产业化发展模式,深化农业循环经济.
循环经济是推进生态文明建设的重要途径.20世纪末以来,福建省循环经济发展经历了探索尝试、示范带动和加快推进的演进历程,循环经济取得显著成效,并形成了一些具有代表性的发展模式.本文指出，目前,福建省循环经济还存在着能源供需矛盾凸显、科技研发和技术推广薄弱、规范化的循环经济市场尚未建立、相关理论支撑不足等现实问题,需要从循环经济产业体系、规范化的循环经济市场、技术研发与推广平台、废旧资源回收利用网络体
The global food system literally means the production, processing, distribution, and consumption of food at global level.The local food system as an altemative to the global food system aims at the re
本文以条件评估法的视角对我国西江流域二十四个地级市居民水质改善的经济偏好进行了严谨的分析。由于条件价值法需要通过问卷来了解受访者对公共品(在本文中为水环境)的偏好，本文在NOAA专家小组的研究建议指导下，通过焦点小组讨论、实验性调研等方式科学、合理地设计了本次调研所需要的问卷。考虑到在计量分析过程中，支付意愿的估计容易受到模型设定的影响。本文运用二元Probit模型、区间数据模型以及Probit模
康熙帝发现丰泽园内稻田中的早熟变异稻穗,将它单独藏,单独种植,以相当于现在的“单株选育法”育成了良种“康熙御稻”.相关的研究,前人已经做了很多工作.本文在前人工作的基础上,对其培育、推广及效果作进一步的分析.认为:当时的御稻种是在“玉田稻”的基础上培育出来的,应为粳稻.传种近三百多年后,御稻会发生变化,后来北京一带的御稻在性状上虽然与“康熙御稻”有所不同,但仍应为其后代.至于推广效果不理想的原因,
The Korean people had been used to dye textiles with dyestuffs from plants and minerals which were collected easily around residential area.They expressed social position with types and colors of thei