查询词典 Ulmus

Effect of returning hill terraced fields for farming to forestry and grass were surveyed based on fixed point observation for nine years continuously. The results showed that death rate of Popular cathayana, Ulmus pumila and Hippophae rhamnoides was 100%, 92% and 12.7% respectively in terraced fields.

通过对湟源地区阴坡梯田退耕还林还草工程连续9年样区定点观测，结果表明，在梯田栽植的杨树到第9年100%死亡，榆树的成活率只有8%，沙棘的成活率为87.3%，柠条的成活率达100%，但长势不旺。

Ulmus pumila L. var. sabulosa is an indigenous plant in Hunshandake sandy land.

沙地榆是浑善达克沙地的乡土树种。

Ulmus lamellosa ; Community characteristics ; Flora ; Species diversity

脱皮榆；群落学特征；区系；物种多样性

Mongolica and Ulmus laciniata populations were aggregated distribution; they displayed different degrees of aggregation intensity during different times of forest conservation; aggregation intensity of populations inclined as a whole.

封山育林一般是针对采伐迹地、火烧迹地或弃耕农田等宜林地采取的营林措施。20世纪80年代以后我国封山育林的理论与应用技术研究均得到了迅速发展，研究内容涉及封山育林后的分布格局、群落类型、营养动态等领域[1]。

The injury tolerance of cell plasma membrane and the correlative enzymes activities of plasma-membrane protection system in the Ulmus pumila leaves treated by nine concentrations (0.3%, 0.6%, 0.9%. 1.2%, 1.5%, 1.8%, 2.1%, 2.4%, 3.0%) of Na2CO3 and NaHCO3 mixtures were studied in a greenhouse of Northeast Forestry University, Harbin, China.

在东北林业大学育种基地，利用9种浓度(0.3%、06%、0.9%、1.2%、1.5%、1.8%、2.1%、2.4%、3.0%)的Na2CO3和NaHCO3混合液对白榆扦插苗进行胁迫处理，探讨其在盐胁迫下，细胞质膜的伤害程度和质膜保护系统相关酶的活性。

These pollen maps show significant vegetation changes during the past 10 000 years in the current forest regions of Northeast China, with the early Holocene characterized by the widely distributed Birch, the mid-Holocene by the development of temperate deciduous forest mainly consisting of Quercus and Ulmus, and the late Holocene by the marked increase in Pinus abun dance and the development of temperate mixed conifer and deciduous forest.

花粉图展示了东北地区植被演化的主要特征。桦树在全新世初期遍布从三江平原到辽东半岛南端的东北东部地区，在森林中占据绝对优势地位；榆属和栎属等阔叶乔木在早中全新世的大部分时间内是东部森林中的主要种类；在大约5kaBP以后，松属在东北现在的森林地区开始增加，云、冷杉属也表现出较明显扩大，中北部地区的森林覆盖度可能比原来增大了。

According the difference of plant community in Daqinggou Nature Reserve, the environment was divided into 7 kinds of habitats, they are Fraxinus mandshurica plant community, Quercus mongolicus plant community, Ulmus macrocarpa plant community, conifer community, lakefront plant community, paddy field plant community and grassplot plant community in sandlot.

按照植物群落的不同将保护区内的环境划分为7种生境，分别为水曲柳植物群落、蒙古栎植物群落、大果榆植物群落、针叶林植物群落、湖边湿地植物群落、稻田植物群落和沙丘草地植物群落。

The results indicated that the growth of 3-year-old Prunus salicina was significantly higher than that of the other species, such as 139.1% and 153.7% higher than Toona sinensis and Juglans regia in height growth, respectively. The maximum percentage of DBH more than 1.0 cm was 91.9% for P. salicina. Next were 49.5% and 48.8% for Ulmus pumila and Pteroceltis tatarinowii, respectively. The contents of total N, total P and total K ranged from 1.36% to 2.52% in the leaves of testing species. The highest content of total N and total P was found in the leaves of Catalpa bungei, while the highest content of total K was observed in P. saltcina leaves. The results indicated that P. salicina, P. tatarinowii, U. pumila had well adaptability on the Karst area both in the growth status and the improvement to the soil with the fallen leaf.

结果表明：(1)3年生冰脆李的生长量明显优于其他树种，其高生长比香椿、核桃分别大139.1%和153.7%；植株胸径大于等于1.0 cm株数的百分比以冰脆李最高达到91.9%，其次是榆树和青檀，分别是49.5%和48.8%；(2)8个树种落叶的全N、全P和全K的总含量变动为1.36%~2.52%，其中全N、全P含量以滇楸最高，全K含量以冰脆李最大；(3)从各树种落叶前后各元素含量及其转移情况看，冰脆李、青檀表现出对大部分营养元素具有较高的循环利用养分或保持养分的能力，而香椿及刺槐相对较弱。

Extraction of genome DNA ligneous plant ; Ulmus Lamellosa ; Elaeagnus mollis ; Ziziphus Jujuba

基因组DNA提取；木本植物；翅果油树；脱皮榆；酸枣

The proportions of the main tree species (Quercus mongolica, Ulmus pumila, Fraxinus mandshurica, Juglans mandshurica) at di...

结果表明，研究范围内样方的坡度在10.2°一22.5°之间。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。