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living branch
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  活枝
     years experiment on four thinning intensities of Cunninghamia lanceolata and Micheliameclurri mixed forest shows that in comparing with control, net growth of DBH for C. lanceofata and M. maclurei is respectively by 70-139% and 11 25%,height by 46-90and 7 10%, volume by 54-140 and 10-43%, mean crown height by 2 6 and 8 13%, growing stock of the stand by 49 75m3. ha-1. The height of first living branch isdecreased by 0. 5 3 and 35 48%,but crown width by 1 2% for C.
     对杉木-火力楠混交林进行4种间伐强度试验表明,间伐6年后各林分的杉木、火力楠胸径净生长量比对照分别增加70—139、11—25%,树高增加46—90、7—10%,村积生长增加54—140、10—43%,林分蓄积量增加49—75m3·ha(-1),平均冠高增加2—6、8一13%,第1活枝高下降0.5—3、35—48%。
短句来源
     In order to study neighborhood competition effects, morphological characteristics, such as the branching angle, total branch-number, current-year branch length, average branch length, and living branch number of the main stem in different strata were investigated for L. chinensis under different levels of neighborhood competition intensity.
     不同竞争强度下 ,太白红杉主茎各层的分枝角度、总分枝数、当年生枝条长、平均枝长和活枝数均表现出显著的差异。
短句来源
     Living branch and leaves mainly grew over height of 12 meters.
     活枝和叶主要分布在12m以上;
短句来源
  “living branch”译为未确定词的双语例句
     (3)Selecting the good individuals within good families within good provenances,their selective advances of volume,diameter,total height,height under the first living branch are 50.55%,23.39%,17.71%,30.81%,respectively.
     (3)优良种源内优良家系中优良个体的选择,其选择进展十分明显:材积、胸径、树高及枝下高的选择进展分别为:50.55%,23.39%,17.71%及30.81%。
短句来源
     Five years after the treatments (at 10 years of age), tree height, diameter at breast height (DBH) and single-tree volume of pruned trees decreased with increasing pruning intensities, but the height to the lowest living branch increased with increasing pruning intensities.
     试验后5年(10年生时),修枝木树高、胸径、单株材积生长均随着修枝强度的增加而降低,而修枝木的枝下高是随着修枝强度的增加而增加。
短句来源
     The result showed the surface of one year living branch of'Li hong' had one film of white thin waxiness,which could effectively decrease the drought of the winter harm;
     结果表明:"丽红"一年生冬态枝条表面有一层白色蜡质薄膜,可有效防止冬旱害的发生;
短句来源
  相似匹配句对
     Living E.
     应用电镜细胞化学技术观察 E.
短句来源
     Sports living
     黄化门的体育生活化
短句来源
     Living branch and leaves mainly grew over height of 12 meters.
     活枝和叶主要分布在12m以上;
短句来源
     Influence of Quarrying the Sand on Aquatic Living Beings in Yangzhong Branch of Changjiang River
     长江扬中江段采沙对水生生物的影响
短句来源
     Branch of Aosi hospital
     奥斯医院分院
短句来源
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  living branch
All relationships between the mass of canopy litter and tree-size parameters (diameters at breast height and at the lowest living branch) were linear in a log-linear regression.
      
The range was related to site index, diameter at breast height, eccentricity and to difference in height to the lowest living branch and the lowest living whorl.
      
mucronatus in vulnerability to the inhibitory effect of Pinus densiflora on nematode dispersal were investigated by inoculating boiled and living branch sections 5 cm long.
      


years experiment on four thinning intensities of Cunninghamia lanceolata and Micheliameclurri mixed forest shows that in comparing with control, net growth of DBH for C.lanceofata and M. maclurei is respectively by 70-139% and 11 25%,height by 46-90and 7 10%, volume by 54-140 and 10-43%, mean crown height by 2 6 and 8 13%, growing stock of the stand by 49 75m3. ha-1. The height of first living branch isdecreased by 0. 5 3 and 35 48%,but crown width by 1 2% for C. lanceofata,and by1 8% for M....

years experiment on four thinning intensities of Cunninghamia lanceolata and Micheliameclurri mixed forest shows that in comparing with control, net growth of DBH for C.lanceofata and M. maclurei is respectively by 70-139% and 11 25%,height by 46-90and 7 10%, volume by 54-140 and 10-43%, mean crown height by 2 6 and 8 13%, growing stock of the stand by 49 75m3. ha-1. The height of first living branch isdecreased by 0. 5 3 and 35 48%,but crown width by 1 2% for C. lanceofata,and by1 8% for M. maclurri. Therefore,it is considered that the thinning intensities of 30%and 40% are better than others,and the remainning trees are 1600 2200plant·ha(-1)

对杉木-火力楠混交林进行4种间伐强度试验表明,间伐6年后各林分的杉木、火力楠胸径净生长量比对照分别增加70—139、11—25%,树高增加46—90、7—10%,村积生长增加54—140、10—43%,林分蓄积量增加49—75m3·ha(-1),平均冠高增加2—6、8一13%,第1活枝高下降0.5—3、35—48%。冠幅杉木下降1—2%、火力楠增加1—8%.可以认为,以间伐强度为30和40%2种方式较好,间伐后林分定型株数约保留在1600—2200株·ha(-1)之间为宜.

The gross standing crop in a 28-year-old Castanopsis kawakamii plantation is 255. 975t/hm2,about 96. 7percent of which is composed of overstorey trees. The biomass allocation in tree stratum decreased in the order:stem(50. 5 % ) >branch(21. 0% ) >root system (19. 8% )>bark(4. 8% )>leaf(3. 9 % ). The living branches and leaves are maily distributed along the stem more than 8. 5 meters above the ground,and root systems are mainly concentrated in the soil depth of less than 30 centimeters. The growth...

The gross standing crop in a 28-year-old Castanopsis kawakamii plantation is 255. 975t/hm2,about 96. 7percent of which is composed of overstorey trees. The biomass allocation in tree stratum decreased in the order:stem(50. 5 % ) >branch(21. 0% ) >root system (19. 8% )>bark(4. 8% )>leaf(3. 9 % ). The living branches and leaves are maily distributed along the stem more than 8. 5 meters above the ground,and root systems are mainly concentrated in the soil depth of less than 30 centimeters. The growth analysis showed that Catanopsis kawakamii is a relatively fast-growing species,and has a potential for expanding in subtropical regions as a reforestation hardwood species.

1994年对三明莘口教学林场小湖工区28年生青钩栲人工林生物量及其分配的研究结果表明:28年生青钩栲人工林总生物量为255.975t/hm2,乔木层总生物量为247.407t/hm2,净生长量为8.836t/(hm2·a);乔木层生物量大小顺序为:干(50.5%)>枝(21.0%)>根(19.8%)>皮(4.8%)>叶(3.9%);树干生物量垂直分布呈金字塔形,活技和鲜叶主要分布在8.5m以上,根系主要集中在土层30cm以上.青钩栲相对较为速生,是值得推广阔叶树种之一.

Genetic variations among multiple levels in main economic traits of Chinese fir had been studied by means of two level plantation of provenance family at 10 year old. The main results are as follows:(1)In the same interested trait,component of variance among individuals within families>that among provenances>that among families within provenances;but heritability of provenances>that of families within provenances>that of individuals among families....

Genetic variations among multiple levels in main economic traits of Chinese fir had been studied by means of two level plantation of provenance family at 10 year old. The main results are as follows:(1)In the same interested trait,component of variance among individuals within families>that among provenances>that among families within provenances;but heritability of provenances>that of families within provenances>that of individuals among families. Genetic improvement potential at different variation levels is distinct. Improvement potential of provenance>that of individual within families>that of families within provenances,in general. Joint selection of multiple levels will produce the biggest genetic gains. (2)In the same variation level,there are different genetic improvement potentials in different interested traits. Thus,when genetic improvement scheme of Chinese fir will be worked out,appropriate objective should be determined in accordance with different traits.(3)Selecting the good individuals within good families within good provenances,their selective advances of volume,diameter,total height,height under the first living branch are 50.55%,23.39%,17.71%,30.81%,respectively. They are much more bigger than those from the first generation genetic improvement of Chinese fir. So,at present we must pay attention to the second generation genetic improvement of Chinese fir. Both the second generation seed orchard and vegetative propagation are used for utilizing the achievements of genetic breeding and improvement of Chinese fir today.

借助于10年生的杉木种源—家系两水平试验林,研究了杉木主要经济性状在多层次上的遗传变异规律,其主要结果如下:(1)在相同的研究性状上,通常家系内个体间的变异量>种源间变异量>种源内家系间的变异量;性状的遗传力通常是种源>种源内家系>家系内个体;不同变异层次的遗传改良潜力是不同的:通常种源>家系内个体>种源内家系;多层次联合选择将获得最大的选择进展。(2)在相同的变异层次上,杉木各研究性状具有各自不同的遗传改良潜力,因而在制订杉木遗传改良方案时,应针对不同的研究性状确定各自合适的改良目标。(3)优良种源内优良家系中优良个体的选择,其选择进展十分明显:材积、胸径、树高及枝下高的选择进展分别为:50.55%,23.39%,17.71%及30.81%。这远远大于杉木第一代遗传改良任何选择方案所产生的遗传进展。因此目前应该把更多的注意力放在杉木第二代遗传改良工作上。既采用有性育种方式,又采用无性育种方式来利用杉木遗传改良取得的成果。

 
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