A Study on Ice Nucleation Active Bacteria in Northern Poplars
北方杨树上冰核活性细菌的研究

With straight trunks and branches, white poplars aim high.
那是一种力争上游的一种树，笔直的干，笔直的枝。

ANATOMICAL OBSERVATIONS ON LEAVES OF AIGEIROS AND CATHAY POPLARS
黑杨派和青杨派叶片的比较解剖

Annual Dynamic Changes of Soil Enzyme and Microorganism under Poplars Forests in Jianghan Plain
江汉平原杨树林下土壤酶及微生物的年动态变化

Leaf Area Index and Specific Leaf Area of Natural Poplars in Ergis Basin
额尔齐斯河天然杨树林叶面积指数及比叶面积的研究

Avenue of Poplars in Autumn
深秋的白杨林荫道

Avenue of Poplars at Sunset
日落下的白杨林荫道

These methods could be used as references for the biological evaluation on the insectresistance of transgenic poplars.
这些方法可作为今后转基因林木抗虫性生物评价得参考。

Poplars thrusting their Branches upward
白杨的枝干向上生长

There are exuberent pine trees,towering white poplars,and calm streams.
这儿有密密的松树和参天的白杨，还有静静的溪流。

poplars clones
杨树无性系品种

The lotuses conceal him poplars by the stream surround him.
莲叶得阴凉遮蔽它。溪旁得柳树环绕它。

Frost crack phenomena of poplars and preventive measures
杨树冻裂与防治

Highlights include the vast desert, ancient poplars, dinosaur valley, the famous seven swords going in Tianshan Mountain.
旅游景点包括大沙漠, 古杨木, 恐龙谷, 还有著名的上天山七剑。

Stigma Receptivity and Its Detection Methods of White Poplars
白杨派树种雌蕊柱头可授性及其检测方法的研究

Stages of MMC meiosis and its timely discrimination of white poplars
白杨大孢子母细胞减数分裂进程及其即时判别

Surveys on red heart disease of poplars
杨树红心病危害的调查研究

There are two rows of Simon poplars growing neatly on either side of the street.
道路的两侧整整齐齐地长着两排小叶杨。

Management of Pests on poplars of Returning Farmland to Forest Project.
退耕还林中速生杨树害虫的发生与防治

Poplars also provide wood, fibre and fuelwood for forest industries.
杨树还可为森林产业提供木材、纤维和薪材。

Foreign Studies on wet heart wood of poplars
国外对杨树湿心材的研究

Two tall and straight poplars stand in front of the gate.
门前有两棵挺拔得白杨。

There are some poplars in the garden.
庭院里有几棵杨树。

Grafting techniques on stumps of poplars
杨树伐根嫁接技术

The newly planted poplars had turned green again.
新栽的白杨叶子又绿了。