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   mixed stand 的翻译结果: 查询用时:0.188秒
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mixed stand
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  混交林
     The annual nutrient return through litterfall amounted to 48.528 kg·hm -2 N, 2.324 kg·hm -2 P and 19.843 kg·hm -2 K in the mixed stand and 37.163 kg·hm -2 N, 2.339 kg·hm -2 P and 18.406 kg·hm -2 K in the pure stand.
     混交林全年通过凋落物归还土壤的N、P、K量分别为 4 8.5 2 8、2 .32 4、19.84 3kg·hm-2 ,纯林为 37.16 3、2 .339、18.4 0 6kg·hm-2 。
短句来源
     The standing crops of N and P in the mixed stand were up to 585.223 kg·hm -2 and 128.784 kg·hm -2 , being 1.5 and 1.3 times as much as that in the pure stand, respectively.
     混交林群落的N、P总积累量达 5 85 .2 2 3kg·hm-2 和 12 8.784kg·hm-2 ,分别是纯林群落的 1.5倍和 1.3倍。
短句来源
     and the soil total N content and rapidly P were 5%~69.0% and 22.4%~233.3% higher in the mixed stand,with total P content almost unchanged.
     混交林土壤全N比杨树纯林地高 5 %~ 69 0 % ,土壤全P含量没有明显的差别 ,但速效P高出 2 2 4%~ 2 3 3 3 %。
短句来源
     The result showed that the total biomass in the mixed stand was 216.41 t/hm~2,the proportions of branch and leaf was 3.2% and 2.5%,which is greater than those in the pure forest respectively.
     结果表明:马尾松混交林的总生物量为216.41 t/hm2,枝和叶所占比例分别高出纯林3.2%和2.5%;
短句来源
     The standing crops of dry matter, N and P in fine roots of the mixed stand were 5.381 t hm -2 , 48.085 kg hm -2 and 4.174 kg hm -2 , 17.4 %, 27.2% and 20.0% higher than those of the pure stand, respectively.
     结果表明 ,混交林细根生物量、N、P养分现存量分别为 5 .381thm-2 、4 8.0 85kghm-2 和 4 .174kghm-2 ,分别比杉木纯林增加17.4 %、2 7.2 %和 2 0 .0 % .
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  “mixed stand”译为未确定词的双语例句
     (3) From 1989 to 1999, in coniferous and broadleaf mixed stand,the stem flow increase 0.19%, the water interception by canopy increase 4.8%,the runoff of soil surface decrease 1.15%.
     (3)针阔混交林在 10年中 ,树干径流增加了 0 .19% ,林冠截留率增加了 4.8% ,地表径流率减少了 1.15 %。
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     According to the analog stand experiment result, the two insect resistance mixed stand types (mixed proportion was 3∶2 or 2∶3) were acquired.
     新疆杨与臭椿以行状3∶2和2∶3混交时林分的抗虫效果较好。
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     Niche and Interspecies Competition Between Chinese fir and its Main Associated Species in Altitude Resource Space in the Natural Mixed Stand
     海拔资源空间天然杉木与主要伴生树种的生态位及种间竞争
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     (5) Compared with the poplar pure stand, in the mixed stand ,poplar s root system(diameter < 10mm),which mainly served as absorbing water and nutrients, was distributed deeper and evener.
     (5)与杨树纯林相比,混—杨树主要起吸收水分和养分作用的根径<10mm的根系在林地中分部更深更均匀。 (6)混—杨树的水分生产力明显高于杨树纯林。
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     3. The volume of dead woods in near primitive mixed stand of coniferous and broad-leaved trees was 241.7 m~3? hm~(-2), which accounted for 44.05 percent of total forest volume.
     3.针阔混交近原始林倒木贮量达241.7m~3·hm~(-2),占林分蓄积的44.05%;
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  相似匹配句对
     GROWTH OF MIXED STAND OF PINE AND SPRUCE
     欧洲赤松—云杉混交林分生长的研究
短句来源
     Meteorological Effects of Chinese Fir and Homana Mixed Stand
     杉木火力楠混交林的气候效应
短句来源
     ⑤mixed.
     ⑤混合型。
短句来源
     type C: mixed.
     C型:混合型。
短句来源
     Lamp Stand
     跽坐人漆绘灯(英文)
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  mixed stand
And (3) in a mixed stand of both plants, foraging bumblebees were sometimes confused between the mimic and model flowers.
      
Open field air Hg measurements over a mixed stand of grasses and other plants in volcanic soil show strikingly similar behavior to detached organs.
      
Forest regeneration on soil and on decaying wood was studied in natural mixed stand of Facus sylvatica L., Abies alba Mill.
      
Spatial dispersal patterns of fine litter were analyzed in relation to forest structure within a temperate mixed stand, in northeastern Japan.
      
The more positive δ15N values of N2O in the spruce stand than in the mixed stand point to extensive microbial N2O reduction in the spruce stand.
      
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Root systems of average sample trees from sample plots in a 25 year old pine-maple mixed stand were compared with those from sample plots ina nearby pure pine stand of similar age,in respects of morphology,distribution,biomass and mineral contents.The results showed that the fine-root (less than 2mm in diameter)biomass per pine tree in the mixed stand is 14% higher than that in the pure stand; the phosphorus contentper unit weight of pine root is doubled than that in the pure stand......etc.The...

Root systems of average sample trees from sample plots in a 25 year old pine-maple mixed stand were compared with those from sample plots ina nearby pure pine stand of similar age,in respects of morphology,distribution,biomass and mineral contents.The results showed that the fine-root (less than 2mm in diameter)biomass per pine tree in the mixed stand is 14% higher than that in the pure stand; the phosphorus contentper unit weight of pine root is doubled than that in the pure stand......etc.The general conclusion is that the site conditions under the mixed stand are favorable to the growth of pine roots and provide normal growth for maple.This fact suggests that such mixture of pine and maple is adequate.

用土柱法和标准木法对固定标准地上的25年生人工油松元宝枫混交林根系进行了调查研究。从根系形态、分布、重量及主要营养元素和粗灰分含量等方面,论述了树种之间的相互关系。研究结果表明,油松元宝枫混交林比其对照油松纯林的油松单株细根量(直径2毫米以下)提高14%,磷含量提高约1倍……。其结论是:试验地的条件下有利于油松根系的生长发育,同时元宝枫的生长正常,因而营造这样的混交林是适宜的。

The biomass and its net increment of a 25-year old pine-maple mixed stand was compared with that of a pure pine stand.The total mass of the litter layer from both stands and the monthly yield of litter production during one year were measured.The contents of nutrient elements (N,P,K and other ash elements)in all parts of the trees,in the fallen litter at different periods and those of the soils were determined.From these data,estimations of the annual amount of nutrient elements.absorbed,remained...

The biomass and its net increment of a 25-year old pine-maple mixed stand was compared with that of a pure pine stand.The total mass of the litter layer from both stands and the monthly yield of litter production during one year were measured.The contents of nutrient elements (N,P,K and other ash elements)in all parts of the trees,in the fallen litter at different periods and those of the soils were determined.From these data,estimations of the annual amount of nutrient elements.absorbed,remained and returned to the soil,in the stands studied were made.The results give evidence to show the superiority of the mixed stand in some respects,as compared with the pure stand.In the mixed stand,the volume increment is 44.46% higher,the nutrient elements accumulated in fallen litter is increaced by 12.82-26.83%,and the amounts of nutrent elements,remained and returned to the soil,are 142.47%and 13% larger respectively.The amount of available nutrient elements in the soil under mixed stand is also greater than that of the pure stand.Litter of maple is more readily decomposed than that of pine,and the amount of nutrient elements so returned is 1.8-4.2 times larger (with equal basal areas).Maple is,therefore,considered to be a right species for soil enrichment.A pine-maple mixture is accordingly a good choice of stand composition under the natural conditions of xishan area.

本试验测定了25年生人工油松元宝枫混交林和油松纯林的现存生物量、生长量、枯落物层蓄积量和一年内的逐月凋落量,并分析了它们各组分的氮、磷、钾和灰分含量,土壤中速效性氮、磷、钾的含量,进而求出林分的元素年归还量和年存留量,得到了不同林分主要营养元素循环及改土性能方面的总概念。结果表明,油松元宝榈混交林对于油松纯林的优越性主要表现为:生长量高44.46%,枯落物层元素累积量高12.82—26.83%,元素的归还量和存留量分别高13—142.47%,林下土壤速效性养分含量比对照高22.5—222.7%。元宝枫凋落物分解速度快,单位胸高断面积的元素归还量比油松高1.8—4.2倍,是个良好的土壤改良树种。其结论是:选择元宝枫作为伴生树种是恰当的,在试验地条件下的这种混交组合是适宜的。

0.338 m.curie of NaH2 32PO4 per tree was introduced to the pine and maple trees by direct soaking root tips in the isotop solution.The radioactivity (impulse) of leaves were measured by Sealer liquid scintillation counter at the 3rd,10th,30th,60th,90th days after the introduction.Results indicate that the radioactive 32p reached the top of the tree on the 3rd day.At first it concentrated in the upper part of the crown and than gradually moved downward.In the pine-maple mixed stand the intake of 32p by...

0.338 m.curie of NaH2 32PO4 per tree was introduced to the pine and maple trees by direct soaking root tips in the isotop solution.The radioactivity (impulse) of leaves were measured by Sealer liquid scintillation counter at the 3rd,10th,30th,60th,90th days after the introduction.Results indicate that the radioactive 32p reached the top of the tree on the 3rd day.At first it concentrated in the upper part of the crown and than gradually moved downward.In the pine-maple mixed stand the intake of 32p by pine at various stages was 10.2%-46.9% higher than that by maple.The peak of intake occurred at the same time for both tree species,The intake of 32p by pine in the pure stand was less than that in the mixed stand.The peak of intake occurred later in the pure stand too.In such mixed stand of pine and maple,pine is a stronger competitor than maple.Besides,soil spray method was also used in these studies,Distribution of 32p in the leeves was shown by autoradiography.

用直接浸根法从油松和元宝枫的根部引入NaH_2 ~(32)PO_4(0.338毫居里/株),分别于3、10、30、60、90天用定标器和液体闪烁仪测其叶部的放射性脉冲。结果表明,~(32)P三天即到达树冠,且首先集中在树冠上部再向下分配;油松元宝枫混交林中油松比元宝枫各个时期吸收的~(32)P多10.24—46.9%,但两树种的吸收高峰同时出现,纯林中的油松比混交林中油松吸收~(32)P的数量少,高峰出现得也晚。其结论是,试验地条件下油松比元宝枫的竞争能力强。此外,还采用了土壤喷洒方法,还用放射自显影术测得~(32)P在林木枝叶中的分布状况。

 
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