速生树种
- Fast-growing tree species;quick growing species of trees
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黎蒴(Castanopsisfiss)为优良的乡土速生树种。
Castanopsis fiss is an excellent indigenous fast-growing tree species .
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速生树种集成材(Glulam)受弯构件结构性能研究速生树种胶合板弯曲弹性性能优化设计
Study on the Structural Performance of Poplar Glued-Laminated Beams ; Optimizing design of fast-growing woody species plywood bend elastic properties
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速生树种胶合板弯曲弹性性能优化设计
Optimizing design of fast-growing woody species plywood bend elastic properties
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发展速生树种定向培育工业用材林的研究
Study on development of fast growing species and directed cultivation of industrial timber stands
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黎蒴栲和尾巨桉是中国南方两种比较具有代表性的速生树种。
Breakingfruit Chinkapin and eucalypt are the representational tree species in south of China .
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速生树种(杨树)与微量元素的关系及产生的经济效果
Relationship Between Poplar And Microelement And Economy Effect
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工程的核心是选择多功能速生树种。
The key of this project is to select multipurpose and fast growing trees and herbs .
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相思树是我国南方一种对土壤适应性强,根瘤固氮的速生树种。
Acacia is a kind of fast growing wood that strongly fit for soil in south China .
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试验结果表明:水杉、Ⅰ-69杨、Ⅰ-72杨是宜于制浆的优良的速生树种,可以考虑在造纸工业中使用。
Results indicate that the fossil tree , poplar 1-69 and poplar 1-72 are excellent fast-growing wood which merits consideration in its application to paper-making industry .
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大力发展用速生树种制造高强度、高弹性、耐气候、耐室外四季变化的自然条件的结构胶合板,对我国具有现实意义。
It has great meaning to develop structural plywood with high strength , high flexibility , resistance to climate , and resistance to outdoor conditions with fast-growing tree species .
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是世界三大速生树种之一,同时也是优良的林业经济植物,主要用于工业纸浆原料、人造板和提炼桉油。
It is both one of the three fast-growing species and an excellent raw economical plant for forestry , which is mainly used for industrial pulp , artificial board and refining eucalyptus oil .
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这种木塑复合材的力学强度、体积稳定性均较素材有显著改善,是木材改性和提高速生树种材质的一种好方法。
The mechanical properties and dimensional stability of PWC are significantly improved in comparison with that of plain timber . It is indeed a good method for timber modification and improvement of wood quality for fast-growing species .
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在林分改造和营林中适当增加阔叶速生树种,改善凋落物性质,对促进凋落物分解和养分周转、改善土壤养分状况、提高柏木人工林的生态和经济效益是很必要的。
It is necessary to introduce some fast-growth broadleaf woody species in managing pure artificial Cupressus forest to improve litter property , to speed up nutrient release , turnover and cycling , and to enhance economic benefits .
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南抗杨和四季杨是近年来选育出的速生树种新品种,我们于2001年在攀西地区首次引种进行扦插和造林试验。
Nankang Poplar and evergreen poplar are new fast-growing tree species of new varieties selectively breeded out in recent years . In 2001 , we firstly introduced these varieties and carried on cutting and afforestation tests at Panxi District .
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美国黑核桃主要木材物理力学性质与国产核桃、核桃楸以及北方常见的速生树种杨树、泡桐相比,木材材质好,但木材干缩性略差;
The physico-mechanical properties except shrinkage of wood of American black walnut is better than that of not only the English walnut and Manchurian walnut , but also poplar and paulownia wood that are fast-growing species mainly produced in North China .
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落叶松是我国北方林区主要的造林速生树种之一,经过50多年的森林营建,落叶松人工林大部分已进入近熟林、成熟林阶段,已成为我国重要的用材林基地。
Larch is the primary fast growing tree species for forestation in north forest region of China . After 50 years forestation , the larch plantations have already became near-mature forest or mature forest and been the important commercial forest base now .
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本课题以我国南方速生树种之一的杉木间伐材为对象,对炭化理论及其炭化物在环境保护中的应用进行了研究。
This paper attempts to do some researches on mechanism of carbonization and application of carbonized materials in environmental protection by using thinning wood of Chinese fir as raw materials , one of the rapidly growing trees in Southern area of China .
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香樟、构树、悬铃木这些速生树种在20世纪80年代或更早以前建造的小区里出现的频率为100%,而在1998年后营建的小区中则更多地出现色叶树种、季相树种。
The occurrence rate of such fast-growing trees as Cinnamomum camphora , Broussonetia papyrifera , Platanus acerifolia planted in the living area built in 1980s or even earlier is 100 percent while the color-leaf trees and aspect trees are used widely in the residential regions built after 1998 .
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桤木((Alnus)作为速生用材树种和水土保持树种,在湖南省已进行大面积的推广种植。
Alnus species ( spp. ), which are used as fast-growing timber and water and soil conservation tree species , are widely cultivated in Hunan province .
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厚朴属于早期速生型树种,树高、胸径和树皮生长高峰期分别为3~10a,4~12a和6~14a。
The high-speed periods of tree height , DBH and rind were 3 ~ 10 , 4 ~ 12 and 6 ~ 14 years respectively .
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木荷是我国南方省区最重要的生物防火树种和优质速生用材树种。
Schima superba is the most important biological fire-resistance and good fast-growing timber wood species in southern China .
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杨树是我国重要的速生用材树种之一,用途广泛。
Poplar is one of important timber species with fast-growing in China , and a wide range of uses .
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而杨树具有生长快、是伊春地区速生用材树种之一。
But the poplar tree has grows quickly , is one of Yichun area fast-growing timber wood tree seeds .
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它具有生长快,材质好,抗性强和适应性广等特点,是我国重要的速生用材树种。
It has fast growth , good material , strong resistance and wide adaptability , is an important fast-growing timber species .
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桉树是优质速生丰产树种,在我省已广泛引种栽培,但低温成为限制其北移的主要因素。
Eucalyptus has the characters of fast growing and fertility , cultivated widely in Hunan Province , but low temperature is the primary factor to limit its northern cultivation .
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橡胶树是一种速生经济树种,由于含有淀粉,糖类和蛋白质等物质,容易遭受霉菌和蓝变菌的侵害并发生变色使其降等。
Hevea brasiliensis is a type of economic trees . Rubberwood is rich of sugars , starch , andprotein ; as a result , it can be easily infected by mould and sapstain fungi .
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采用速生灌木树种木豆的种子代替大豆制成豆胶用于压制胶合板,其胶合强度达到或超过GB984688的规定。
The glue made from seeds of pigeonpea-a fast-growing shrub was substituted for soybean glue in the study . The test results showed that the bond strength of the plywood reached or surpassed National standard GB 9846-88 .
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泡桐是我国特有的速生用材树种之一,其生长迅速、轮伐期短,对林地土壤养分消耗快,而土壤养分是土壤肥力最重要的物质基础。
Paulownia is one of the most important fast-growing timber species in China . Paulownia forests consume a large number of soil nutrient because of rapid growth and short rotation . Soil nutrient is the most important material basis for soil fertility .
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研究结果表明:(1)绿楠是比较速生的树种,地径、胸径、树高和材积的年生长都呈多峰态曲线;
The results indicated that : ( 1 ) Manglietia hainanensis , an indigenous timber tree species , grew quickly , and its annual increment of tree height , stem basal and breast height diameter , and tree volume had many peaks .
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杉木是我国特有的优良速生用材树种,已有一千多年的栽培历史,因其易繁殖、生长快、材质优、产量高、好管理而深受群众的钟爱。
Chinese fir ( Cunninghamia lanceolata ( lamb . ) Hook ) is a native fast-growing timber species in China with the characteristics of easy to breeding , fast-growth , excellent timber quality and high productivity , and has been planted and cultivated for more than 1000 years .