您要查找的是不是:
- the tree species of afforestation 绿化树种
- tree species of afforestation 造林树种
- Shanxi allspice tree species of medicinal and spice. 山西香果药用及香料树种。
- Experiment of afforestation with multiple tree species using solid water was carried out on the wasteland of Longqingxia in Yanqing County, Beijing to select suitable tree species. 为进一步选择应用固体水效果较好的树种,为今后困难立地造林树种选择提供参考,于2004年4月在北京市延庆县龙庆峡荒滩进行固体水多树种造林应用试验。
- This paper introduces the techniques of afforestation,selection of relevant tree species andmajor factors affecting their survival and growth in a municipal waste landfill site in Hudao,Qingdao. 通过在青岛湖岛垃圾场的现场试验,研究了城市垃圾填埋场上植树造林的方法、适宜树种的筛选以及影响树木成活和生长发育的主要因素。
- The Comparison of Frozen Resistance of Several Tree Species of Ilex L. 几种冬青属植物抗冻能力比较。
- Castanopsis hystrix is one of the important planting tree species of south subtropical evergreen broad-leaved forest. 摘要红锥是南亚热带地区优良的珍贵乡土阔叶造林树种。
- Abstract : Tree species of Yulania Spach is Chinese traditional ornamental , officinal and spiceberry . 摘要 : 玉兰属树种是中国传统观赏花木和药用及香料植物。
- Relationship between water supply and consumption of main planting tree species of protection forests in loess area of western Shanxi Province. 黄土区防护林主要造林树种水分供需关系研究。
- A long-term phenological study on primary tree species of a natural broadleaf forest was conducted in the Fushan experimental forest of northeastern Taiwan. 摘要在福山试验林之天然阔叶林内对其主要树种进行长期物候调查。
- This paper presents the contents of foliar nutrients and their seasonal variations for 9 major neddle and broadleaf tree species of northeast China during a single growing season. 本文分析测定了东北地区9个主要针阔叶树种的营养元素含量和季节动态,并应用主成分分析和系统聚类分析方法分析了各树种之间的营养元素相关关系和互补性。
- He was wearing a strange species of hat. 他戴着一种奇怪的帽子。
- Tree species resources of Qingdao city consists of 400 plant species,including 200 species of arbor,139 species of bush,34 species of ground cover and 3 species of bamboo. 青岛市树种资源的调查与选择结果:青岛市城市森林营建常用植物约400余种,其中乔木200余种、灌木139种、地被34种、竹类3种。
- The name is also applied to several tree species of the genera Machaerium and Dalbergia in the pea family (see legume), the sources of commercial rosewood. 此一词又指豆科(pea family)Machaerium和黄檀属(Dalbergia)中数个乔木种(参阅legume),这些乔木种是具商业价值的紫檀木的来源。
- There are many species of chrysanthemum. 菊花品种很多。
- This species of flower flourishes in a warm climate. 这种花在温暖的气候中长得茂盛。
- The formation of the tree species of the coastal forest is rather simple, represented by Robinia preudoacacia and Ulmus pumila in the north,Casuarna equsetifolia and Eucalyptus spp. in the south. 海防林树种组成简单,在北段多以刺槐、榆树为主,南段则有木麻黄、桉树等少数几种。
- Tree species of the disaster focused on bamboo>evergreen species> deciduous trees, conifers> broad-leaved species, tree species> Lamu species, alien species> native trees. 从造林树种灾情看,其受灾重点为竹类、针叶树种、阔叶树种。
- No one has yet looked critically at the economics of afforestation. 至今还没有人有分析地对待造林经济学。
- Lower slopes of the upper dry rainforest tree species. 为低山坡干性雨林中上层乔木树种。