Broadleaved tree是什么意思

网络释义

用法例句

One-year old seedlings of six broad-leaved tree species,Michelia macclurei,Castanopsis fissa,Castanopsis sclerophylla,Castanopsis kawakamii,Cyclobalanopsis myrsinaefolia and Castanopsis lamontii,were separately planted under 25-year-old Masson s pine plantation,and developed into different closed mixed forests after 16 years.

在25 a生的马尾松林下分别套种火力楠、闽粤栲、苦槠、格氏栲、青栲和拉氏栲等阔叶树种的1 a生幼苗,16年后形成郁闭的针阔混交异龄林。

A quantitative analysis of the growth of moso bamboo(Phyllastachys pubescens)in the mixed forest of moso bamboo and evergreen broad-leaved trees and their competition were studied.

以人为干扰较少的竹阔混交林为研究对象,对竹阔混交林中毛竹Phyllostachys pubescens空间分布以及阔叶树对毛竹生长影响及竞争进行了定量分析研究。

The results indicated that: average DBH and increasing rates of volume for broad-leaved trees increased with the increase of intermediate cutting intensity,but influenced a little on height;the growth of Pinus koraiensis s DBH and height were promoted obviously as the increase of intermediate cutting intensity,but declined just in the year of the first intermediat.

结果表明:阔叶树胸径生长和蓄积增长率随间伐强度加大而增加,但对树高的影响较小;间伐强度的增大会明显促进红松胸径和树高的生长,但是首次抚育间伐会使当年的树高生长量显著降低,以后随林龄的增加树高生长量会逐渐恢复正常生长;中度间伐措施对阔叶树和红松的生长均比较有利,10a生的阔叶红松林实施上层抚育的适宜间伐强度为45%左右;中度间伐的林分由于资源水平适中(主要是光资源),因而有利于林下植被均匀度和多样性的提高。

With broad-leaved trees,such as Manglietia yuyuanensis,Michelia maudiae,Cinnamomum porrectum and Sloanea sinensis Hemsl,as experimental materials,the light media,the standards of the containers,the quality of broad-leaved trees raised in the seedling containers and so on were studied.

以容器育苗为研究方向,以乳源木莲、深山含笑、大叶樟、猴欢喜等阔叶树种为试验材料,开展了育苗轻型基质、育苗容器规格、阔叶树容器苗出圃质量评价等方面的研究。

Water conservation functions of mixed plantations among Pinus massoniana and broad-leaved trees(Elaeocarpus sylvestris, Liquidambar formosana,Alniphyllum fortunei,Betula luminifera)were studied.

通过对马尾松与山杜英、枫香、拟赤杨和光皮桦混交后水源涵养功能的研究,结果表明:地上部分持水量以马尾松纯林最大,其次是混交林,最小为阔叶树纯林;活地被物枯落物部分持水量以阔叶树纯林最大,其次为混交林,最小为马尾松纯林;土壤渗透能力和贮水能力以混交林最大,其次为阔叶林,最小为马尾松林。

In the middle and lower reaches of Xijiang river,32 species of broadleaf tree were planted in the experiment in order to select the excellent ones for ecological forestation.

在西江中下游,对32个阔叶树种进行造林生长比较试验,4年生林木调查结果表明:不同树种间的造林保存率存在着明显的差别,除幌伞枫、秋枫、凤凰木、小叶杜英、木棉、鸭脚木保存率较低外,其余树种保存率都较高,达93%以上;树种间树高、胸径、冠幅生长量差异均达到极显著水平,且各性状之间的相关均达到极显著水平,西南桦、红胶木、黎蒴、红荷木、红椎、荷木、锥栗、仪花、樟树、火力楠、蒲桃在树高、胸径、冠幅生长上都表现较好,青梅、小叶杜英、腊肠树、猫尾木、秋枫、木菠萝都表现较差。

Description was made on establishment and management of broadleaf tree seed base in Linhai,Zhejiang province by selection of target tree species,road designing,tendering and thinning,production designing and implementation.

从目的树种选择、林道规划设计、林分抚育间伐、生产经营设施规划与建设几方面总结了临海市阔叶树采种基地的营建与管理技术,指出建立采种基地的关键是选择好目的树种,并且要依立地条件和不同树种而选用不同的经营方式。

This paper had studied on physiological moisture characteristic of yearling tree seedlings at seedling stage of four broadleaf tree species of Gleditsia japonica Miq, Albizia julibrissin Durazz,Cornus controrersa Hemsl and Buxus microphylla Sieb.

对皂角、合欢、灯台树、黄杨4种阔叶树种一年生播种苗的苗期水分生理特性进行研究,结果表明,4个树种的叶片鲜重含水量在73%～81%之间,各树种的抗旱能力依次为黄杨>合欢>皂角>灯台树;对各树种蒸腾强度的测定结果表明,皂角、灯台树蒸腾强度日变化为双峰曲线,黄杨、合欢为单峰曲线;通过测定皂角、合欢裸根苗的叶和根的水势,进一步证明了合欢的抗旱性强于皂角。

The BCTMP properties of 4 kinds of Broadleaved trees of Alniphyllum fortunei,Michelia macclurei,Castanopsis carlesii and Sapium discolor have been studied and analyzed and the results show that all these species possess the better pulping adaptivity.

对拟赤杨、火力楠、米槠、山乌桕等 4种阔叶树进行BCTMP制浆、打浆强度分析、漂白工艺研究、与硫酸盐木浆配抄强度比较及黑液分析 ,结果表明 ,拟赤杨、火力楠、米槠、山乌桕等 4种阔叶树具有较好的制浆适应

Allocation pattern of biomass and productivity in the mixed uneven-aged stands of Masson s pine and hardwood species;

马尾松-阔叶树混交异龄林生物量与生产力分配格局

Chemical analyses of five nutrient elements (N,P,K,Ca,and Mg) for the arbor,undergrowth,and forest floor were conducted in the pure Pinus massoniana stand and its mixed forests with hardwood species.

在马尾松纯林及其与阔叶树混交林生态系统中,对乔木层、林下植被层和森林地被物层的主要养分元素含量进行了系统的分析 结果表明:①N在乔木层中的含量最小,而在林下植被层中则普遍较高;P、K的含量大小在各植被层中表现为:林下植被层>乔木层>地被物层;Ca、Mg则在地被物层中的含量最高 ②在乔木层中,Ca含量最高,Mg的含量最低,而N、P、K的含量则随器官不同而异,但表现出一致的趋势,即叶>枝>根>皮>干 ③马尾松与阔叶树的养分含量存在一定差异,N在阔叶树叶片中的含量普遍高于马尾松,P、K在阔叶树叶片和根系中的含量大于马尾松,而在树皮中的含量则相反 ④不论是马尾松还是阔叶树,N的含量随林木根系径级增大而下降(细根>中根>粗根) ⑤森林地被物层中各养分元素的含量在群落和组分之间存在明显差异,但总的趋势表现为Ca>N>Mg或K>P。

The CTMP properties of four kinds of broad leaved tree were studied and analyzed The results showed that all those species are suitable to CTMP pulpin

对火力楠、拟赤杨、米槠、山乌桕等 4种阔叶树进行 CTMP制浆、打浆强度分析、漂白工艺研究、与硫酸盐木浆配抄强度比较及黑液分析 ,结果表明 ,拟赤杨、米槠、山乌桕等 3种阔叶木具有较好的制浆适应性 。

Among of them, arbor species are 35 altogether 7879 trees(the needleleaf are 8 kinds and 1556 trees; the broadleaf are 27kinds and 6323 trees. They make up 19.7 and 80.3 per cent of the total number, respectively);

阔叶树27种6323株,占80.3%;

Broadleaf hedge such as laurel, spirea, photinia, etc.

阔叶树篱，如月桂、绣线菊、 光叶石楠等。

An elm be a type of large tall broad - leave tree

榆树是一种高大的阔叶树

An elm is a type of large tall broad-leaved tree.

榆树是一种高大的阔叶树。

Cultivation of Pleurotus ostreatus Using Elaeagnus angustifolia as a Substitute for Broad-leaved Tree

沙枣树代替阔叶树木屑栽培平菇试验

A variety of conifers and hardwoods makes up the bulk of the vegetation.

大部分植被由各种针叶树类和阔叶树类构成。

The results indicated that the average water consumption rate of broadleaf trees was more than conifer trees.

结果表明,针叶树种耗水速率低于阔叶树种。

Comparison of Litter Decomposition of Six Species of Coniferous and Broad-leaved Trees in Subtropical China

亚热带6种针叶和阔叶树种凋落叶分解比较

General use plywood of tropical broadleaved species

GB/T13009-1991热带阔叶树材普通胶合板

Aphrodisium faldermannii rufiventris Gressitt is an important pest of broadleaf trees.

红腹柄天牛是阔叶树的重要害虫之一。

Present Situation and Development of Indigenous Broadleaf Species in Yunnan Hot Areas

云南热区乡土阔叶树种的现状及发展

Comparison of the early growth of 23 broad-leaved tree species in Western Guangdong Province

粤西地区23个阔叶树种早期生长比较

Research of Machine Recognition for Broad-Leaved Trees Based on Leaves Synthetic Features;

基于叶片综合特征的阔叶树机器识别研究

made of the hard-to-cut wood of a broad-leaved tree, as e.g. oak.

由阔叶树的难以切割的木材制成的，例如橡树。

This region contains areas which are prinarily covered with either high density conifers or meadow hardwoods.

该地区，主要的植被覆盖是高度的针叶树类或草地阔叶树类。

the wood of broad-leaved dicotyledonous trees (as distinguished from the wood of conifers).

阔叶双子叶树木的木料（区别于针叶树木材）。

Broadleaf evergreen tree such as evergreen magnolia, castor tree, etc.

阔叶长绿树包括长绿木兰、蓖麻树等等。

and the boys made cups of broad oak or hickory leaves,

孩子们就用阔大的橡树叶和胡桃树叶做成杯子，