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Ecological characters of rare-endangered plant Ulmus lamellose in Shanxi Province 山西稀有濒危植物脱皮榆的生态学特征
Ulmus lamellose 脱皮榆
The results showed: 1) there are in evidence the land vegetation of warm temperate zone in \%Ulmus lamellose \%communities and the property of the north temperate zone in the flora; 结果表明 :1)脱皮榆群落具有暖温带地带性植被的特点 ,区系成分具有北温带性质。
8.The results showed: 1) there are in evidence the land vegetation of warm temperate zone in \%Ulmus lamellose \%communities and the property of the north temperate zone in the flora; 结果表明 :1)脱皮榆群落具有暖温带地带性植被的特点 ,区系成分具有北温带性质。
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。