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- Ulmus bergmannianan. 兴山榆
- Technology of Grafting Ulmus pumila var, pendula Rehd. 垂榆嫁接技术。
- Experiment on Grafting and Planting of Ulmus pumila var. Pendula Rehd. 垂榆嫁接及栽植的试验研究。
- A Preliminary Study on the Mathematic Model of Leaf Area of Ulmus pumila Linn. 与相似的文献。
- An elm tree(Ulmus alata) of the southeast United States,having twigs with winged,corky edges. 翅榆一种美国东南部榆树(翼枝长序榆榆属),具有有翼和软木质的小枝
- Preliminary analysis on genetics of phenotype measuration of plus tree of Ulmus pumita Linn. 白榆优树表型测定的遗传学初步分析。
- A Study on the Distant Hybridization between Populus alba Linn. And Ulmus pumila Linn. 银白杨与白榆远缘杂交的研究。
- When Urochela quadrinotata Reuter harms Ulmus pumila,the spread of disease will take a turn for the worse. 红足壮异蝽的危害能加重病害的流行和扩展。
- Otherwise, the phenology phases of ulmus pumila are not significantly related to precipitation and sunshine duration. 研究表明,榆树物候与降水、日照关系不显著。
- Title: Effect of salt stress on activity of superoxide dismutase (SOD) in Ulmus pumila L. 关键词:白榆;盐胁迫;电解质相对外渗率;超氧物歧化酶
- The main plant are Ulmus pumila and Celtis bengeana community, Acer mono and Quercus mongolica community. 天然残存林植被,主要为榆树、小叶朴群落和色木、蒙古柞群落。
- An elm tree(Ulmus alata) of the southeast United States, having twigs with winged, corky edges. 翅榆一种美国东南部榆树(翼枝长序榆榆属),具有有翼和软木质的小枝
- Title: Preliminary analysis on genetics of phenotype measuration of plus tree of Ulmus pumita Linn. 关键词:白榆;优树;遗传参数;通径分析;直接影响;间接影响
- Ivela ochropoda is one of the main defoliator pest occurred in Ulmus pumila, and is very serious in Wuqi County. 摘要榆毒蛾是榆树的食叶害虫之一,在吴起县发生严重。
- The application of the structure of leaf epidermis in the classiffication of Ulmus. 叶表皮结构在榆属分类中的应用.
- The main plant distribute on moving dune are Aneurolepidium chinense, Cleistogenes chinensis, Arundinella hirta, Ulmus macrocarpa, Rhamnus davuricum. 固定沙丘分布的主要植物为羊草、中华隐子草、野古草,大果榆、鼠李等。
- Spatial patterns of main woody plant populations are aggregative, Ulmus macrocarpa, Acer mono, Ulmus pumila populations in some communities are random. 主要木本植物种群的分布格局大多为集群型,只有部分群落中大果榆、色木槭及家榆种群为随机分布。
- Phellodendron amurense,Fraxinus mandshurica,Acer mono and Ulmus propinqua can be chosed as broad-leaved ones to be planted together with Larix gmelini. 结果表明,加大阔叶树的比例,有利于提高其林下生物多样性指数。
- While the Ulmus pumila had the longest growth peak then Elaeagnus angustifolia,Populus euphratica,and Tamarix chinensis in turn. 生长高峰期到达的时间不同,白榆生长高峰期最长,其次为沙枣、胡杨、柽柳;
- The site, an evenly sloped lawn, had two allees of cedar elms( Ulmus crassifolia), planted circa1936, cutting across its entire width, perpendicular to the slope. 基地中,均匀的草坡上两排大约植于1936年的榆杉树列切穿了基地全宽,垂直于草坡。