Response to Light of Ulmus pumila in Different Soil Moisture;
不同土壤水分条件下白榆的光响应研究
Study on the Root Distribution Characteristic and Root Biomass of Ulmus pumila in Yanerwo Scenery Site of Urumqi;
燕尔窝古白榆根系分布特征
Effect of Paclobutrazol on Drought_Resistance of Populus alba × Populus berolinensis, Ulmus pumila, and Betula platyphylla;
多效唑对银中杨、白榆和白桦抗旱性的影响
Genetic relationship between parents and hybrid progenies of Populus alba L. ×Ulmus pumila L. using AFLP marker.;
利用AFLP标记研究银白杨×白榆的亲子关系
From practice of cultivating and pruning of Ulmus pumila L.
白榆(UlmuspumilaL。
A study was conducted, using some physiological parameters related to water relations of plants such as water potential, soluble protein, net photosynthetic rate, stomatal conductance, and so on, to determine the responses of three tree species Populus alba x Populus breolinensis, Ulmus pumila L.
为探讨外源物质对苗木抗旱性的调节机制，采用盆栽试验和室内测定相结合的方法，用不同浓度的多效唑、黄腐酸、脱落酸对银中杨(Populus alba×Populusberolinensis)、白榆(Ulmus pumila L。
Elm bark was dried and ground.
将榆树皮干燥后磨制成粉。
Study on Ulmus lamellosa Community Characteristics and Species Diversity in the South of Shanxi;
山西南部脱皮榆群落生态特征及其物种多样性的研究
Study on niche of population of Ulmus lamellosa in the south area of Shanxi province;
山西南部脱皮榆种群生态位的研究
Study on Paternity Test of Populus Alba Linn. × Ulmus Pumila Linn. and Filial Generation Utilization;
银白杨×白榆亲子鉴定及子代利用研究
Seed zones of Chinese forest trees--Seed zones of Ulmus pumila L.
GB/T8822.13-1988中国林木种子区白榆种子区
Physiological and Morphological Responses of Ulmus Pumila Seedlings to Water Stress;
水分胁迫下白榆幼苗的生理形态反应
Study on the Resistance of Siberian Elm Clone 65212 to Beetle
白榆优良无性系65212对榆毛胸萤叶甲的抗虫性研究
Effect of Sugar and N to Tip Rooting of Elm Tissue Culture
糖和氮对白榆组织培养新梢生根的影响
Study on the Relation of Different Afforestation Densities to Increment of White Elm
白榆不同造林密度与生长量关系的研究
Drought-Resistance of Ulmus Pumila and Ligustrum Lucidum under Different Water and Fertilization Conditions;
不同水肥条件下白榆和女贞抗旱性的研究
The Application of New Anti-transpiration Foliar Fertilizer on Rhus Typhina, Robinia Pseudoacacia and Ulmus Pumila
新型抗蒸腾叶面肥在火炬树、刺槐、白榆上的应用
Dynamic Changes of Storage Materials in Ulmus pumila L. Seeds of Different Soil Types
不同土壤类型白榆种子贮藏物质的动态变化
Ion Distributing Characteristic of Ulmus pumila, Fraxinus velutina, Amorpha fruticosa and Tamarix chinensis in Different Saline and Alkali Area
不同盐碱区白榆、白蜡、紫穗槐、柽柳体内离子分布特征
C and N conternt as well as C/N ratio can be taken as a rooting index of elm tip.
插穗中碳、氮的绝对量及碳 /氮比率可作为白榆新梢生根的指标。
It is suggested that these characters could be consideredd as early selection and evaluation indexes of white elm.
可以考虑用它们作为白榆早期选择与评价的指标。
Cold resistance Species selected are weeping willow,spruce,white elm,Chinese tamarisk and desert date.
经抗寒性分析得出垂柳、云杉、白榆、柽柳、沙枣抗冻性较强 ;
Genetic Variations and Early Selection of White Elm in Half-sib Families and among Clones
白榆半同胞家系、无性系遗传变异与早期选择研究
The result shows that the soil water content in which Ulmus pumila and Hippophae rhamnoides have high-output and high-efficiency respectively is 11.4%～17.2%;
结果表明白榆沙棘具有高产高效的土壤含水量分别为11.4%~17.2%;
Study on the Change of the Soil Moisture Content and Its Effect on the Vegetation in the Ulmus Pumila Umbrella Area;
白榆树伞区土壤含水量变化及其对植被影响的研究
Study on Growth Dynamics and Ecological Function of Robinia Pseudoacacia and Ulmus Pumila Mixed Forest in the Loess Plateau
黄土区白榆/刺槐混交林生长动态与生态功能研究
Poplar, elm, walnut, camphor, fir, rosewood, bamboo, etc.
白杨，榆木，胡桃，樟树，枞树，紫檀，竹子等。