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rhizome plant
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     (3) The tillering ability of Psathrostachys juncea is the strongest with 136 tillers per plant , Critana (Elymus) followed with 84 tillers, and the rhizome plant Rodan (Pascopyrum) is the weakest with 36 tillers.
     (3)新麦草分蘖能力最强,单株分蘖数达到136个,披碱草Critana次之,单株分蘖数平均84个,根茎型植物牧冰草Rodan分蘖能力较弱,仅为36个.
     Plant Population Ecological Study on Dominant Rhizome Plant in Songnen Plain Wetland in China
     松嫩平原湿地优势根茎植物种群生态学研究
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     1. The results indicated that Epimedium koreanum is a typical species of perennial herbaceous rhizome plant.
     根茎间着生次序分级明显,分株地上部分只能存活1年,其根茎至少可存活9年以上。
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  相似匹配句对
     Brevi rhizome or collar tillaring cushion plant;
     短根茎或根蘖型垫状植物;
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     The plant of Rhodiola.
     红景天为景天科红景天属(Rhodiola L.)
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     The museum of the plant
     植物博物馆
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     Plant stems and breed to breed for being excellent with the rhizome of 10 g.
     种茎繁殖以10g的根茎繁殖净产率最高。
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Fire is a common natural phenomenon in terrestrial ecosystems such as forests andstppe. In this paper,we researched the influence of Fall burning and Spring burning on thetotal above-ground biomass and the biomass of Gramineae,Allum,Compositae,Legumi-nosae and other herbs in Leymus chinense steppe,At the same time,we also researched theinfluence of burning on the quantity and growing status of Leymus chinense which was adominant population and Stipa grandis as well as Caragana microphylla which was un-favourable...

Fire is a common natural phenomenon in terrestrial ecosystems such as forests andstppe. In this paper,we researched the influence of Fall burning and Spring burning on thetotal above-ground biomass and the biomass of Gramineae,Allum,Compositae,Legumi-nosae and other herbs in Leymus chinense steppe,At the same time,we also researched theinfluence of burning on the quantity and growing status of Leymus chinense which was adominant population and Stipa grandis as well as Caragana microphylla which was un-favourable for mowwing and grazing Then,we discussed mechanism of using fire to im-prove pasttire. After two years monitoring,statistics aid analysis,we got the main resultsas following:1. The total yield of pasture was mainly controlled by precipitation. Before and afterburning the yield remained stable. Their above-groud biomas fluctuated from 180g/m ̄2 to200g/m ̄2 in normal harvest years. 2.After burning,the yield of grasses was increased by 25-45%than that of un-burned site.。In burned and unburned communities the yield of grasses showed similar in-creasing tendency from the begining of growing season to the middle of July.,The yield ofgrasses reached 80-120g/m ̄2 by the middle of July. After then,the yield of grasses of un-burned sites;tayed at this level, but that of burned sites increased continuously, whichgenerally reached 130-160g/m ̄2. 3.Burning had a remarkable promoting effect on the increase of Leymus chinensewhich was a high quality rhizome plant.In the middle and later of growing season,theaboveground biomass of L. chinense population in burned sites was 50-90g/m ̄2 more thanthat in unburned sites,which was more than that of unburned by 60-169%。4.In burned sites,the yield of high quality Leguminosae forage;increased a little,butthe yield of Allium generally keeped stable. 5.Burning can check the growth and reduce the quantity of Stipa grandis which is un-favourable for tanning and Caraganamicrophylla which is unfavourable for mowwing aswell as forages of Compositne and other herbs which have low utilizing value. The checkeffect was more obvious in Fall burning.In unburned community,the yield of Stipa grandisand Caragana microphylla were 30-50g/m ̄2 and 20-50g/m ̄2 after burning,the yield of sti-pa grandis decreased to 10-25g/m ̄2,and the yield of Caragana microphylla was generallyless than 10g/m ̄2. 6.The fire effects on improving pasture related closely to plant life form,growingform,the niches of populations. The influence of fire on the physical and chemical naturesof steppe soil was also a relative factor for pasture improving. According to these results,planning burning can increase the quality and utilizing value of pasture. So,buring is apasture improving method which costs a little aid easy.This method has a great applica-tion prospect.

本文研究了秋季火烧和春季火烧对内蒙古草原地带的羊草草原总产量优势种群羊草、大针茅以及小叶锦鸡儿数量与生长状况的影响。自1990年秋至1992秋经过两年的监测、统计与分析,主要研究结果如下:草场的总产量受大气降水的制约,火烧前后草场的总产量基本上保持稳定,中常年景的地上生物量变化在180──200克/平方米之间。火烧对优质根茎禾草一羊草的增长有显著的促进作用,在生长季的中后期,火烧地段上羊草种群的地上生物量比未烧地段高出50──90克/平方米,提高了600──160%。火烧地段上豆科草的产量略有提高,而葱类植物的产量基本上保持稳定。火烧可以抑制大针茅、小叶锦鸡儿和菊科杂类草的生长,减少它们的数量,其中以秋季火烧最为明显。在对照群落中,大针茅的产量为30──50克/平方米,小叶锦鸡儿为20──50克/平方米,火烧之后大针茅的产量减至10──25克/平方米,减少了50──60%,小叶锦鸡儿的产量一般低于10克/平方米。火烧对草场的效应与各种植物的生活型、生长型、种群生态位(对水分和养分等资源利用情况)等特点紧密相关。火烧对草原土壤理化性质的影响也是有关因素。综上所述,有计划的火烧可以提高草群质量和利用价值,是一种?

Artemisia mongolica (Ficsh. ex Bess)Nakai, is a species of perennial herbaceous rhizome plant of Compositae. The two kinds of buds formed from ramet root crowns during later growth season could survive over the winter, and the buds of the root crowns and the rhizome apex developed to produce new ramets next year. A method of indentifying age classes of ramets was put forward, which was differentiated by propagation generation number of rhizome buds. The age structure of ramets was a quantity...

Artemisia mongolica (Ficsh. ex Bess)Nakai, is a species of perennial herbaceous rhizome plant of Compositae. The two kinds of buds formed from ramet root crowns during later growth season could survive over the winter, and the buds of the root crowns and the rhizome apex developed to produce new ramets next year. A method of indentifying age classes of ramets was put forward, which was differentiated by propagation generation number of rhizome buds. The age structure of ramets was a quantity collocation of different generations within populations. The best rhizome buds had vegetative propagation for three generations, and the root crowns might live less than four years. During flowering phase, the population was composed of vegetative and reproductive ramets in Songnen Plains. There were three age classes for every ramet component, and ramet quantity and biomass changed in an expanding age structure. The productivity of reproductive ramets was 4~7 times than that of the vegetative ramets. As the potential population, the buds had an expanding age structure. The age class one of the ramets was the strongest, in propagation potential of the root crowns and decreased gradually with the increasing of age classes. Under favourable environments, the populations could extend its niche space by the speed of 10 cm per year.

蒙古蒿为根茎型多年生草本菊科植物。在生长季后期,分株在根颈处产生两种芽越冬,翌年根颈芽和根茎顶端芽均可发育为分株。通过对蒙古蒿的研究,创建了按根茎芽的繁殖世代数划分根茎型多年生草本菊科植物种群无性系分株的年龄及鉴别方法,以及用不同世代成员的数量配置来分析草本植物种群分株的年龄结构。龄级的划分标准是:由根茎顶端芽形成的分株为营养繁殖一代,作为1龄级;1龄级分株死亡后,由根颈芽第1次萌生向上生长的分株为营养繁殖二代,作为2龄级;2龄级分株死亡后,由根颈芽第2次萌生向上生长的分株为营养繁殖三代,作为3龄级。鉴别时,如果分株顶端受损发生在根颈区以上的任何分枝均仍为原龄级,而不为下一个世代的龄级;如果根颈区有2个以上的芽同时萌生向上生长成株,则划分为同龄级。蒙古蒿的根茎芽最多可营养繁殖3个世代,根颈的生活年限最多为4年。在松嫩平原割草场,蒙古蒿种群进入开花期以后,种群由营养分株和生殖分株组成。各分株组分均有3个龄级,其数量和生物量均呈增长型年龄结构。生殖分株的生产力是营养分株的4~7倍。蒙古蒿芽库的潜在种群呈增长型年龄结构。分株根颈的繁殖潜力以1龄级最大,随着龄级的增加依次减弱。如果环境条件有利,蒙古蒿种群将以每年10...

蒙古蒿为根茎型多年生草本菊科植物。在生长季后期,分株在根颈处产生两种芽越冬,翌年根颈芽和根茎顶端芽均可发育为分株。通过对蒙古蒿的研究,创建了按根茎芽的繁殖世代数划分根茎型多年生草本菊科植物种群无性系分株的年龄及鉴别方法,以及用不同世代成员的数量配置来分析草本植物种群分株的年龄结构。龄级的划分标准是:由根茎顶端芽形成的分株为营养繁殖一代,作为1龄级;1龄级分株死亡后,由根颈芽第1次萌生向上生长的分株为营养繁殖二代,作为2龄级;2龄级分株死亡后,由根颈芽第2次萌生向上生长的分株为营养繁殖三代,作为3龄级。鉴别时,如果分株顶端受损发生在根颈区以上的任何分枝均仍为原龄级,而不为下一个世代的龄级;如果根颈区有2个以上的芽同时萌生向上生长成株,则划分为同龄级。蒙古蒿的根茎芽最多可营养繁殖3个世代,根颈的生活年限最多为4年。在松嫩平原割草场,蒙古蒿种群进入开花期以后,种群由营养分株和生殖分株组成。各分株组分均有3个龄级,其数量和生物量均呈增长型年龄结构。生殖分株的生产力是营养分株的4~7倍。蒙古蒿芽库的潜在种群呈增长型年龄结构。分株根颈的繁殖潜力以1龄级最大,随着龄级的增加依次减弱。如果环境条件有利,蒙古蒿种群将以每年10cm的速度扩展种群的生态位空间。

Through field investigation in three storage pools of coal ash in the general firepower plant in Tongliao, the vegetative restoration and dynamic of the species in different time were comparatively analyzed. The results showed that there were 62 specie plants in three storage pools, subject to 20 families and 47 gena. There are 59 specie plants in 10 years restoration plot, 48 specie plants in 7 years restoration plot and 38 specie plants in 4 years restoration plot. In all three...

Through field investigation in three storage pools of coal ash in the general firepower plant in Tongliao, the vegetative restoration and dynamic of the species in different time were comparatively analyzed. The results showed that there were 62 specie plants in three storage pools, subject to 20 families and 47 gena. There are 59 specie plants in 10 years restoration plot, 48 specie plants in 7 years restoration plot and 38 specie plants in 4 years restoration plot. In all three vegetative restoration areas, Gramineous and Leguminous plants occupied the dominance position, which general coverage degrees were more than 85 percent. But in the inlaid community there was more rhizome plants. In the spectrum of life form of Raunkiaer, the annual plant has the most proportion in al three vegetative restoration areas.

通过实地调查,对通辽发电总厂3个储灰池不同时间植被恢复及其植物种类动态进行了比较分析。结果表明,在3个正在植被恢复的储灰池中,共出现62种植物,隶属于20个科,47个属。其中,恢复10年区共有植物59种,恢复7年区48种,恢复4年区38种。3个植被恢复区均以禾本科和豆科植物占优势地位,总盖度在85%以上。恢复区的镶嵌群落以根茎植物为主。在Raunkiaer生活型谱中,3个植被恢复区均以一年生植物的比例最大。

 
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