1)poplar[英]['p?pl?(r)][美]['pɑpl?]杨树
1.Effect of NO on photosynthesis in different drought-enduring poplars;NO对不同耐旱性杨树光合作用的影响
2.On the Method of Controlling the Insect Pest and Disease of Poplar in Huaian City;淮安市杨树病虫害及其防治方法探讨
3.Relationship between Composition and Content of Free Amino Acids in Poplar and Damage of Saperda populnea;杨树游离氨基酸组成和含量与青杨天牛危害的相关分析
英文短句/例句
1.The wood of the box plant.黄杨木黄杨树的木头
2.The white poplar is no ordinary tree. Let me sing its praises.白杨树实在是不平凡的，我赞美白杨树!
3.Native Auxiliary Species of Mixed Broadleaf-Korean Pine Stands--Populus ussuriensis Kom.阔叶红松林的伴生乡土杨树——大青杨
4.The Resisttance of Poplar Varieties to Melamposora Larici-Populina Kleb杨树对落叶松—杨栅锈菌的抗性研究
5.Differentially expressed gene analysis of populus induced by Tetra lobulifera(Keifer)杨树抗杨四瘿螨相关基因的表达分析
6.Infestation and control of poplar clearwing moth Paranthrene tabaniformis in the stump of poplar.杨树截干上白杨透翅蛾的危害及防治
7.The blister canker on poplar trunks causd bg Botryosphaeria dothideaarewidely distributed in North China.杨树水泡型溃疡病分布广泛,严重为害杨树。
8.A Fractal Approach to Crown Structure and Rooting Characteristics of Poplar and the Strategies of Poplar Breeding;杨树冠型、根系的分形特征及杨树改良策略
9.Mechanism of Poplar s Productivity Increased by Mixture of Seabuckthorn (Hippophae Rhamnoides L.) and Poplar (P.simonii Carr.);沙棘杨树混交促进杨树生产力提高的机理研究
10.A Geostatistical Analysis on Spatial Patterns of Saperda Papulnea L. in Poplars杨树青杨天牛种群空间格局的地统计学研究
11.Studies on the Insecticidal Activity and Acting of Mechanism of Transgenic Poplars Against Micromelalopha Troglodyta;转基因杨树对杨小舟蛾杀虫活性及其机理研究
12.The Studies on Irradiation Effects of ~(60)Co-γ Ray on Four Poplar Cultivars of Sect. Aigeiros黑杨派4个杨树品种~（60）Co-γ辐射效应研究
13.A New Poplar Variety ‘Lulin-3’ for Plywood and Pulpwood杨树胶合板材纸浆材新品种‘鲁林3号杨’
14.A New Poplar Variety 'Lulin-2' for Plywood and Pulpwood杨树胶合板材纸浆材新品种‘鲁林2号杨’
15.A New Poplar Variety 'Lulin-1' for Plywood and Pulpwood杨树胶合板材纸浆材新品种‘鲁林1号杨’
16.Behavioral responses of Xylotrechus rusticus L. to poplar bark volatiles青杨脊虎天牛对杨树皮挥发物的行为反应
17.Research on Soil Respiration Dynamics and Poplar Fine Root for Four Hybrid Poplar (Populus×Euramericana cv.) Plantation Patterns in the Northern Areas of Jiangsu Province;苏北不同杨树人工林经营模式下土壤呼吸及杨树细根研究
18.The Impact of Volatile from Bark of Ten Species of Poplar to Xylotrechus Rusticus L.;十种杨树树皮挥发性物质对青杨脊虎天牛成虫的影响
相关短句/例句
populus杨树
1.Correlation between Molecular Genetic Distances among Parents and Growth Traits of Progenies in Populus;杨树杂交亲本分子遗传距离与子代生长性状的相关性
2.Effect of Yellow Leaf Virus on the Photosynthesis and Transpiration rate of Populus;杨树黄叶病害对叶片光合和蒸腾作用的影响研究
3.Studies on Propagation Technology of Populus and the Application of Plant-bioreactor;杨树扩繁技术及植物生物反应器的应用研究
3)poplar tree杨树
1.Research on water stress monitor and irrigation system on basis of virtual instrument for poplar tree;基于虚拟仪器杨树苗木水胁迫监测与灌溉系统研究
2.Compiling of one-variable volume table of standing timber of poplar tree;杨树一元立木材积表的编制研究
3.Occurrence and control of defoliate pests on poplar tree in Shaoxin city;绍兴市杨树主要食叶害虫发生规律及防治措施
4)Poplars[英]['p?pl?][美]['pɑpl?]杨树
1.Experiment on AciNPV in Control over Apocheima Cinerarius Erschoff Attacking Poplars;核多角体病毒(AciNPV)防治杨树春尺蠖试验
2.Occurrences of Batocera horsfieldi of Poplars and Control Measures in Deyang City;德阳市杨树云斑天牛发生情况及防治措施
3.The resistance of five verieties of poplars to Poecilonata variolosa Paykull;五个杨树品种对锦纹吉丁虫的抗性
5)Populus spp杨树
1.Advances in genetic engineering of insect-resistant Populus spp. with Bt toxic protein genes;杨树Bt抗虫基因工程研究进展
2.Change of moisture retention in sandy soil after planting mixed forest of Populus spp.and Robinia pseudoacacia;沙地土壤种植杨树-刺槐混交林后持水特性变化的研究
3.Feeding behavior and feeding amount of Parasa consocia (Walker) on the leaves of Populus spp.观察褐边绿刺蛾Parasa consocia Walker2个世代幼虫取食杨树叶片的习性。
6)black poplar group黑杨派杨树
1.Research on tissue-culture reproductive systems of black poplar group;黑杨派杨树组培再生系统的研究
延伸阅读
杨树杨树Populus；oplar杨柳科杨属植物落叶乔木的通称。全属有100多种，主要分布在欧洲、亚洲、北美洲的温带、寒带及地中海沿岸国家与中东地区。中国有50多种。木材用作民用建筑材，生产家具、火柴梗、锯材等，同时也是人造板及纤维用材。叶是良好的饲料。杨树又是用材林、防护林和四旁绿化的主要树种。杨树小枝具顶芽，芽鳞2枚以上。单叶互生，卵形或近圆形。柔荑花序，雌雄异株。蒴果。种子小，具冠毛。在中国分布范围跨北纬25°～53°，东经76°～134°，遍及东北、西北、华北和西南等地。近年引进南方型美洲黑杨，使栽培区南移至湖北、湖南等省的平原地区。杨属共分胡杨组、白杨组、黑杨组、青杨组、大叶杨组5组。杨树喜光。要求温带气候，具有一定的耐寒能力。对水分要求十分严格，因其光合作用和蒸腾作用比其他阔叶树均高。杨树种子小，蒴果成熟即开裂，因此采种用剪采果穗法或从地面收集。种子极易丧失发芽力，宜随采随播。在含腐植质多的砂壤土上播种育苗。杨树育苗更多的是无性繁殖法。容易生根的树种如青杨、小叶杨、欧美杨用扦插育苗。生根难的树种，如毛白杨在扦插前先用生长调节剂处理穗条，或用嫁接法，把难生根的杨树枝条嫁接到易生根的杨树上，再扦插育苗。对根蘖萌芽力强的杨树可在大树附近开沟，切断其侧根，或在苗床上切断根，以促进根蘖苗的发生。造林要求深厚的壤土或砂壤土，华北平原以砂壤质潮土或潮褐土为好。如果地下水位过高则要求开沟排水。杨树树种的改良方法有选择育种、杂交育种、多倍体育种、诱变育种等。杨树的病害种类多，且危害严重。主要有叶斑病、叶黑星病、烂皮病、溃疡病、根癌病和紫根腐病。害虫主要有杨白潜蛾、杨枯叶蛾、杨扇舟蛾、杨笠圆盾蚧等。毛白杨杨树
