共查询到19条相似文献,搜索用时 187 毫秒
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对黑龙江省的绿篱树种资源进行概括,阐述了不同种类绿篱在各领域的应用,并分析了黑龙江省绿篱树种资源的应用情况及存在的一些问题,为绿篱种质资源应用和发展提供依据。 相似文献
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指出了绿篱是用乔木、灌木密植而形成的篱垣,分析了绿篱的种类,从松土、培土、肥水管理、修剪、病虫害防治等方面探讨了绿篱的种植及养护技术. 相似文献
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指出了绿篱是用乔木、灌木密植而形成的篱垣,分析了绿篱的种类,从松土、培土、肥水管理、修剪、病虫害防治等方面探讨了绿篱的种植及养护技术。 相似文献
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本文梳理多年监测资料,概述了十堰市核桃病虫害种类及现状,分析了十堰市核桃病虫害多发原因,针对常见的7种虫害提出了防治措施,可供核桃规模种植产区参考借鉴。 相似文献
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山西省的绿篱植物资源与利用 总被引:1,自引:0,他引:1
对山西省现有23种主要绿篱植物,分别从形态、习性、繁殖、利用等方面作了介绍,并就一般绿篱的分类,及通用的栽培方法作了简要介绍,以便为绿篱植物资源的开发利用和城乡环境的绿化、美化提供依据。 相似文献
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树木栽植与养护作业中使用的机械类型比较多,专用的包括挖坑(穴)机、植树机、树木移植机、枝桠和绿篱修剪机等。文中着重介绍了这些机械的类型、技术特点、常用型号和生产企业以及国内外的发展趋势。 相似文献
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This paper presents results from a survey of border hedges on farmland in western Kenya. The survey covered 160000 ha of high
potential land in eastern Siaya District and Vihiga District of western Kenya. The survey attempted to widen the knowledge
of the typology, the biomass and the parameters influencing the spatial distribution of hedge types. Spatial analysis was
used to delimit hedge type sub-regions (using cluster analysis) and to identify the variables influencing the spatial distribution
of hedge types (using discriminant analysis). It is demonstrated that a complex association of variables is influencing the
subdivision of the two districts in hedge type sub-regions in which ethnicity, population density, area in woodlots and ecological
variables like elevation, rainfall and soil fertility are important variables. These variables are influencing each other
and are responsible for the contrasting situation in Vihiga and Siaya District. Border hedges have similar functions in both
districts (demarcation of land, to prevent cattle from entering), nevertheless species composition and dimensions differ remarkably
in both districts. Border hedges in Siaya District are poorly managed or not managed at all. In Vihiga District people are
used to manage their hedges. Agroforestry techniques, for example techniques based on frequent pruning of border hedges, have
a high chance in being successful in this district because no additional investment in labour or time is required. The spatial
distribution in the amount of biomass is strongly correlated with the distribution in the per cent area ground cover of border
hedges. This means that secondary data on the area in hedges derived from aerial photographs can serve as a useful indicator
of the biomass present. As a result, the most difficult part of the field survey, the destructive sampling for the determination
of the biomass, can be eliminated, making general surveys considerably easier.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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通过植物篱栽培实践表明:多年生灌木植物篱效果最好,且植物篱治理坡地投资少,见效快。本文通过对秭归县植物篱治理模式的总结和评价,为其它林业生态工程建设提供参考。 相似文献
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在对齐云山的野生观赏植物进行多年调查研究的基础上,筛选出了具有观赏价值的野生植物402种(包括种下分类单位),隶属118科304属,划分为绿化及风景植物、花卉植物、草坪及绿篱植物、垂直绿化植物和树桩盆景植物5大类,并对齐云山的野生观赏植物的保护及开发利用提出了建议。 相似文献