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   裂叶榆 的翻译结果: 查询用时:0.173秒
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裂叶榆
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  “裂叶榆”译为未确定词的双语例句
     U.laciniata Mayi,2n+2x=28=2m=8sm+14st+4t.
     裂叶榆,2n=2x=28=2m+8sm+14st+4t;
短句来源
     Techniques for the Seedling Culture of Ulmus laciniata
     珍贵树种—裂叶榆育苗技术的研究
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  相似匹配句对
     Techniques for the Seedling Culture of Ulmus laciniata
     珍贵树种—育苗技术的研究
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     STUDIES ON SONCHUS ARVENSIS L QU GUIRONG
     苣荬菜的研究
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     Studies on Chemical Constituentsof Sonchus arvensis L.
     苣荬菜的化学成分研究
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     Method:The pollens of five species S.officinalis,S.
     officinalis,长S.
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     Study on the Biological Characteristics of Ambrostoma quadriimopressum
     甲生物学特性的研究
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Ulmus laclnlata Mayr. is a precious broadleaf timber tree species in north-east of China. In the paper, on U. laciniata, procedure of pregermination, sowed norm, retaining seedling density, fertilization,etc. were studied comprehensively and systematically. The results indicated that germination rate of fresh sand-mixed seeds in grean house is 47.6 %. If the seeds are not pregerminated, its germination rate is 13.6 %. The suitable amount of fresh seeds or air-dried seeds for sowing is 315~375 kg/ ha or 90~150...

Ulmus laclnlata Mayr. is a precious broadleaf timber tree species in north-east of China. In the paper, on U. laciniata, procedure of pregermination, sowed norm, retaining seedling density, fertilization,etc. were studied comprehensively and systematically. The results indicated that germination rate of fresh sand-mixed seeds in grean house is 47.6 %. If the seeds are not pregerminated, its germination rate is 13.6 %. The suitable amount of fresh seeds or air-dried seeds for sowing is 315~375 kg/ ha or 90~150 kg/ha respectively. The best retaining seedling density is 0.36 million seedling/ha. The techniques of raising seedlings of U. laciniata characterized by low cost and more economical benefit.

裂叶榆为东北地区珍贵用材树种。本文对其催芽方法、播种量、留苗密度、施肥技术等进行了比较系统的研究。试验指出:鲜种混沙塑料棚催芽的种子发芽率达47.6%,比未催芽的提高34%,每公顷鲜种播量为315~375 kg,气干种播量为90~150 kg,每公顷的适宜留苗密度为36万株,其苗木生长良好,成本低,经济效益显著;裂叶榆苗木施肥效果比较明显。

According to the forest types, sites for plantation of precious deciduous trees are selected by quantitative analysis method. The forest communities in Baishilazi Natural Reserves are classified into three groups and eight types, and their site productivities are evaluated by means of stepwise regression and site index methods. It is indicated that depth of horizon A, soil humidity, slope direction and slope degree are the key factors influencing tree growth. In broadleaved-Korean pine and picea-abics mixed...

According to the forest types, sites for plantation of precious deciduous trees are selected by quantitative analysis method. The forest communities in Baishilazi Natural Reserves are classified into three groups and eight types, and their site productivities are evaluated by means of stepwise regression and site index methods. It is indicated that depth of horizon A, soil humidity, slope direction and slope degree are the key factors influencing tree growth. In broadleaved-Korean pine and picea-abics mixed forest, the selected order of planting tree species is Tilia amurensis, Ulmus laciniata, PheIlodendron amurense, Juglans mandshurica, and Fraxinus mandshurica: and that in broadleaves trees mixed forest is Tiliaamurensis, Juglans mandshurica, Ulmus laciniatam, Phellodendron amurense and Fraxinus mandshurica.

本文以森林类型为基础,利用数值分析法对东北地区珍贵阔叶树种适地适树进行了研究。白石砬子自然保护区可划分为3个森林类型组和8个森林类型,用逐步回归和立地指数法进行树种立地生产力评价,结果表明A层土厚、坡向、坡度、土壤湿度等是影响人工林生长的主导因子。在阔叶红松混交林,造林树种选择顺序为紫椴、裂叶榆、黄波罗、胡桃楸、水曲柳;而在阔叶杂木林,则是紫椴、胡桃楸、裂叶榆、黄波罗、水曲柳。

By the system test of anotomy characters,physics properties,the pH value,buffering ca-pacity of acid and alkaline and gelation time of urea formaldehyde resin to four species such as Ulmuspropinqua,U.laciniata Mayr,U. pumila L.and U.macrocapa Hance,the results show that four specieselm are all suitable as the materials of plywood.Their pH value and acid buffering capacity are obvioustaller than the common tree species,such as Fraxinus mandshurica Rupr,and Tila amurenisis Rupr.So,the mixed nadening agent should...

By the system test of anotomy characters,physics properties,the pH value,buffering ca-pacity of acid and alkaline and gelation time of urea formaldehyde resin to four species such as Ulmuspropinqua,U.laciniata Mayr,U. pumila L.and U.macrocapa Hance,the results show that four specieselm are all suitable as the materials of plywood.Their pH value and acid buffering capacity are obvioustaller than the common tree species,such as Fraxinus mandshurica Rupr,and Tila amurenisis Rupr.So,the mixed nadening agent should be used in the production of elm plywood.

通过对春榆(Ulmuspropingquakoidz,),裂叶榆(UlmuslacinialaMayr,),家榆(UlmuspumilaL.)和黄榆(Ul-musmacrocarpaHance)4种木材的解剖特征、物理性能、pH值、酸、碱缓冲容量以及脲醛树脂胶凝时间进行系统测试,结果表明,4种榆木均适合做胶合板用材,从而可以扩大胶合材用材树种,4种榆木的pH值、酸缓冲容量明显高于水曲柳(Frax-inusmandshuricaRupr.)、椴木(TilaamurensisRupr)寻常用胶合板材树种。建议生产榆木胶合板应该使用混合型固化剂.

 
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