poplar

The wind set the poplar leaves rustling .

风吹得杨树叶淅淅飒飒直响。

Effect of Electric Field Action Time on Bonding Property of Poplar Wood

电场作用时间对杨木胶合效应的初探

There are great white poplars along the road .

沿路有很多高大的白杨树。

A tall poplar tree once stood there .

该处曾有一棵高大的白杨树。

Cryptorrhynchus lapathi is an important trunk borer of poplar and nationwide object of forest plants quarantine .

杨干象是杨树重要的蛀干害虫，为全国性森林植物检疫对象。

In Beijing , for example , the most common allergenic pollens in spring include those from the large-fruited elm tree , Cathay poplar , ash , acacia and white birch .

以北京为例，春季最常见的致敏花粉包括榆树、杨树、白蜡、合欢树和白桦的花粉。

Beijing has about 2 million female poplar and willow3 trees which produce catkins to spread their seeds every spring , the Beijing Municipal Bureau of Landscape and Forestry4 ( BMBLF ) was quoted as saying on Wednesday by the Beijing Morning Post .

据《北京晨报》援引北京市园林局的信息显示，目前，北京约有200万株杨柳树雌株，每年春季都产生大量飞絮。

Design and application of the stand density form of Chinese white poplar

毛白杨林分密度表的编制及其应用

A study on the density effect law of the southern type poplars

黑杨派南方型杨树密度效应规律的研究

Study on the Environment Improvement of Jiangsu 's Poplar Industry during It 's Sustainable Development

试论江苏杨树产业可持续发展过程中的产业环境建设

Study on Use of Two Kinds of Cultivating Techniques to Control Poplar Canker

两种栽培技术防治杨树溃疡病的研究

Correlation Analysis on Poplar 's Growth and Climatic factors

杨树生长量与气候因素的关联分析

Study on the Growth Process Genetic Variation and Selection of the Poplar Clones

杨树无性系生长过程遗传变异及选择研究

The Comment and Investigation on Regional Test of Poplar Fine Varieties

杨树良种区域试验品评调查

The Key Technology of Production of Poplar Veneer for Export Floor

出口地板用杨木单板生产技术关键

Evaluation on the wood properties of plantation poplar grown in different conditions

不同生长培育条件下人工林杨树木材性质的综合评价

The ways of poplar pollen development and the effect of some factors in vitro

杨树花粉发育途径及某些因素的影响

The Volume Forecast of the Speed up and High Yield Forest for Poplar

杨树速生丰产林材积生长量的预测

Studies on Characteristics of Phosphorus Adsorption in Rhizosphere Soil of Poplar

杨树根际土壤磷吸附特性的研究

Physical and Mechanical Properties of Poplar Wood Modified with Nanometer Hybrid Material

纳米复合材料改性杨木木材的物理力学性能

The Trends of Poplar Research in China

中国杨树研究动态

Storage capacities of poplar seeds were studied using germination method indoor .

通过室内发芽试验研究了杨树种子的耐贮性。

Effect of Fertilization on the Wood Properties of Poplar 69

施肥处理对Ⅰ-69杨木材材性的影响

Dry Weight Method for Photosynthetic Rate of Poplar Leaf

用干重法测定Ⅰ-69杨光合速率的几个问题

Study on the Economic Benefit of Lesser Black Poplar Pulp Plantation

小黑杨纸浆林经济效益的研究

A Study on Rooting Characteristics of Cuttings of New Poplar Clones

杨树新无性系扦插生根特性的研究

Study on control effects of different compound management patterns to trunk longicorn of poplar

不同复合经营模式对杨树蛀干害虫天牛控制效果的调查研究

Cultivation technique and management pattern for poplar cultivar using as wood were studied .

其次就作为工业用材林的杨树栽培技术模式、管理模式进行了多方位的分析研究。

The application of Richards growth function on growth prediction of poplar artificial stands

Richards生长函数在意大利杨树无性系人工林生长预测上的应用

A preliminary study on the seedling growth rhythm of the poplar new clones

杨树新无性系苗期生长节律研究初报