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- Ulmus davidianan. 黑榆
- Keteleeria davidiana (Bertr.) Beissn. 铁坚油杉
- 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。
- Ostryopsis davidiana has the highest water coefficient and the lowest water consumption and low WUE characteristics. 耗水量最少的树种是虎榛子,其耗水系数最大,对水分的利用效率最低。
- 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
- The researches on Populus davidiana forest were carried out in Wuling Mountain Natural Reserve. 对雾灵山自然保护区的山杨林进行了研究。
- 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。
- We do a prevention cure experiment to Dendrolimus superans (Butler) and Clostera anastomosis Linnaeus using low intensity prescribed fire on Populus davidiana Dode. 在落叶松人工林和山杨(Populus davidiana Dode.;) 林内分别进行了低强度计划火烧对落叶松毛虫[Dendrolimus superans(Butler)]和分月扇舟蛾[Clostera anastomosis(Linnaeus)]的防治实验。
- 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
- The storage behavior of seeds of Taiwan cow-tail fir (Keteleeria davidiana (Franchet) Beissner var. formosana Hayata) was investigated in the present study. 摘要本研究旨在探讨台湾油杉种子的储藏性质。
- 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
- Morchella natural resources, bracken, seabuckthorn, apricot, Prunus davidiana, there Chaihu,huang ling, all-in-long, 30 kinds of medicinal herbs such as licorice. 自然资源有羊肚菌、蕨菜、沙棘、山杏、山桃、还有柴胡、黄苓、全地龙、甘草等30种药材。
- 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。