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introduction and selection    
相关语句
  引种与筛选
    Introduction and selection of magnolia family in the Islands of Zhoushan
    木兰科植物海岛引种与筛选
短句来源
  引种和选育
    Introduction and Selection of Fine Types and Cultivars of Robinia pseudoacacia
    刺槐优良类型及品种的引种和选育
  引种及选择
    Introduction and Selection of Southern Type Clone of Black Poplars
    黑杨派南方型无性系引种及选择的研究
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In order to raise productivity of newly-afforestated conifer stand in mountain area of Yichang (1 000~2 000 m above sea level) so as to screen out most suitable industrial timber species for introduction and domestication in this city and aim at goals of orientation, fast-growing and high-yield, excellent quality, stablization and high-effectiveness. We developed a study on introduction and selection for several kinds of industrial timber conifer species such as European spruce, Japanese fir and Scotch...

In order to raise productivity of newly-afforestated conifer stand in mountain area of Yichang (1 000~2 000 m above sea level) so as to screen out most suitable industrial timber species for introduction and domestication in this city and aim at goals of orientation, fast-growing and high-yield, excellent quality, stablization and high-effectiveness. We developed a study on introduction and selection for several kinds of industrial timber conifer species such as European spruce, Japanese fir and Scotch pine. The result shows that increment for European spruce, Japanese fir and Scotch pine is 16%~28%, 19% and 22.8% higher than that of contrast Chinese pine in order.

为了提高宜昌山区 (海拔 1 0 0 0~ 2 0 0 0m)针叶树新造林分生产力 ,为本市引种驯化筛选出最适宜的工业用材树种 ,以达到工业用材林定向、速生、丰产、优质、稳定和高效的目标。我们于 1 980年开展了欧洲云杉、日本冷杉、欧洲赤松等几种工业用材针叶树种引种选择研究。研究结果表明 :欧洲云杉、日本冷杉、欧洲赤松的生长量分别比对照油松大 1 6%~ 2 8% ,1 9% ,2 2 8%。

By information capturing and scientific decision-making,Yunnan local government made a plan for Neem industry to guide its scientific,rational and ordered development.The paper elaborated that the sound organization of the government is a base for the industry's rapid development mainly from 3 aspects including anticipated input from local government as funds assurance, anticipatory scientific research,introduction and selection for good varieties as technical assurance,concentrated seedling-raising and...

By information capturing and scientific decision-making,Yunnan local government made a plan for Neem industry to guide its scientific,rational and ordered development.The paper elaborated that the sound organization of the government is a base for the industry's rapid development mainly from 3 aspects including anticipated input from local government as funds assurance, anticipatory scientific research,introduction and selection for good varieties as technical assurance,concentrated seedling-raising and strengthening care for young seedlings as management mechanism assurance.At the same time,it will make Neem plantation area of Yunnan the biggest in the world rapidly by taking some countermeasures such as try to seize the opportunity of national policy implementation as possible,to strengthen the development of a series of Neem products and to carry out international cooperation.

云南省地方政府通过捕获信息、科学决策,制定印楝产业发展规划,引导印楝产业科学、合理、有序地发展。文章从3个方面阐述政府的有效组织是云南印楝产业快速发展的基础,即地方政府先期投入作为资金保障;科研先行,引进、筛选优良品种作为技术保障;集中育苗、加强幼苗管护作为管理机制保障。同时,抓住国家的政策机遇,强化印楝系列产品开发,开展国际合作,壮大印楝产业,使云南印楝种植规模迅速成为世界之最。

The basic diameter of stem and height of 55 tree species for stand conversion of ecological forest in Dongguan city were investigated in each season for two years.The results showed that: Trees grown faster between spring equinox and autumn equinox.For most tree species,growth rate was influenced by temperature mostly,precipitation secondly,and sunshine hours the least. The most suitable conditions of temperature and precipitation were between spring equinox and middle summer.Further analysis found that: Dolichandrone...

The basic diameter of stem and height of 55 tree species for stand conversion of ecological forest in Dongguan city were investigated in each season for two years.The results showed that: Trees grown faster between spring equinox and autumn equinox.For most tree species,growth rate was influenced by temperature mostly,precipitation secondly,and sunshine hours the least. The most suitable conditions of temperature and precipitation were between spring equinox and middle summer.Further analysis found that: Dolichandrone cauda-felina,Kigelia africana,Phoebe bournei,Gmelina arborea,Mytilaria laosensis,Toona sinensis,Cinnamomum burmannii were sensitive to conditions of temperature and precipitation;Castanopsis hystrix,Carallia brachiata,Jacaranda mimosifolia,Rapanea neriifolia,Cinnamomum camphora,Michelia macclurei,Schima wallichii,Erythrophloeum fordii had well compatibilities.Dolichandrone cauda-felina,Kigelia africana,Gmelina arborea,Gmelina chinensis,Syzygium cumini,Artocarpus heterophyllus,Mangifera persiciformis adapted to conditions with higher temperature and more precipitation,who had the highest growth rate between middle summer and autumn equinox.Acmena acuminatissima,Erythrophloeum fordii,Artocarpus heterophyllus,Syzygium cumini,Elaeocarpus chinensis were more influenced by sunshine hours,and Rapanea neriifolia,Sloanea sinensis,Nageia fleuryi,Jacaranda mimosifolia,Carallia btachiata,Mangifera persiciformis were less influenced.The results above had conductive significance for plant introduction and selection of tree species.

对东莞板岭生态公益林林分改造所用的55个树种的基径和树高生长量按季节进行调查,为期2年,结果显示:春分~秋分是这些树种的生长峰期。对大多数树种而言,温度对生长量的影响最大,其次是降水、日照时数,春分~夏至期间的水热条件最适宜树木的生长。进一步分析发现猫尾木、吊瓜木、楠木、云南石梓、米老排、香椿、阴香对水热条件较敏感,红锥、密花树、蓝花楹、竹节树、樟树、火力楠、西南荷、格木对水热条件的适应性较强;猫尾木、吊瓜木、云南石梓、石梓、乌墨、木波罗、扁桃性喜高温多雨,生长最高峰出现在夏至~秋分;肖蒲桃、格木、木波罗、乌墨、华杜英受日照时数的影响较大,密花树、猴欢喜、长叶竹柏、蓝花楹、竹节树、扁桃受日照时数的影响较小。这对植物引种和树种选择有一定的指导意义。

 
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