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发达的根系
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  developed root
    There was no a strict requirement for exogenous hormone and basic medium for the root system formation, and even cultured on a multiplication medium with a high KT concentration, 10.0 mg/L, the well developed root system were formed on the base part of the clustered plantlets.
    根系的形成对外源激素和基本培养基种类等条件要求不严 ,即使是在KT浓度高达 10 0mg/L的增殖培养基上 ,丛芽的基部仍可形成较发达的根系
短句来源
    ⑤Developed root traits were the important characteristics in weight-ear type rice varieties.
    ⑤发达的根系性状是重穗型品种一个重要的特征。
短句来源
    Astragalus adsurgens can fully use water in soil with a developed root system.
    沙打旺能利用发达的根系,充分利用土壤水分。
短句来源
    cremastogyne possesses the relatively developed root system and the nitrogen fixation function and therefore it will play an important part in the site improvement.
    四川桤木具有较发达的根系和固氮功能,因而将对立地的改良起着重要的作用。
短句来源
    The well developed root system and high water holding capacity of leaves enable Acacia to adapt the dry hot environment.
    而相思类则以发达的根系和较高的叶片保水能力来适应干热环境
短句来源
  well developed root system
    There was no a strict requirement for exogenous hormone and basic medium for the root system formation, and even cultured on a multiplication medium with a high KT concentration, 10.0 mg/L, the well developed root system were formed on the base part of the clustered plantlets.
    根系的形成对外源激素和基本培养基种类等条件要求不严 ,即使是在KT浓度高达 10 0mg/L的增殖培养基上 ,丛芽的基部仍可形成较发达的根系
短句来源
    The well developed root system and high water holding capacity of leaves enable Acacia to adapt the dry hot environment.
    而相思类则以发达的根系和较高的叶片保水能力来适应干热环境
短句来源
  “发达的根系”译为未确定词的双语例句
    1. C815S and its homologous plant lines had the ideal plant and leaf types and the developing root system.
    (1) C815S及其同源株系具有理想的株叶形态和发达的根系
短句来源
    It could still form a good root system in a 1/2MS+0.15%C medium of no hormones,the rooting rate could reach 100%.
    在不含任何激素的1/2MS+0.15%活性炭培养基上即可形成较发达的根系,生根率达100%;
短句来源
    The epithelial sheath has higher water holding capacity with 91.1%~93.72%, 2.54%~33.94% higher than that of root.
    乌拉苔草发达的根系具有强大的蓄水能力,尤以根鞘的蓄水能力最强,蓄水可以占鲜质量的91.1%~93.72%,比根系蓄水能力高出2.54%~33.94%。
短句来源
    The paper made an ecological anatomy , a cultivation experiment on the lime -soil habtat and an analysis on the diurnal variation of photosynthetic an transpiration rate from three aspects of morphology , transplantation , physiology . The conclusion is that: (1) From the viewpoint of morphological anatomy , it has typical xerophyte structure such as strong root system , small leaf area , dense floss under the leaf surface , high stomatal density , the small opening degree , developed vessels and palisade tissues etc .
    从形态学、栽培学和生理学三方面对迷迭香进行生态解剖、石灰土上的栽培实验以及光合蒸腾速率日进程的分析,得出以下结论:(1)在形态解剖上:迷迭香具有发达的根系,较小的叶面积,叶片下表面密被绒毛,气孔密度大,开度小,厚的角质层和发育良好的木质部和栅栏组织等典型的旱生结构。
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    Root occupied
    根占总量的24.14%,木麻黄有着发达的根系
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  developed root
These regenerated plants manifested bright green leaves and a well-developed root system.
      
Lucerne (Medicago sp.) and sweet clover (Melilotus suaveolens) with deep, well developed root systems have the most pronounced effect on the soil desalinization.
      
Regenerated plants with well-developed root systems on medium with reduced levels of macroelements and sucrose were easily adapted to a greenhouse.
      
The complete plantlets with well-developed root and shoot systems were transferred to field conditions where they grew to maturity, flowered and fruited normally.
      
The plants grew vigorously with well-developed root systems and exhibited the trifoliate leaf character of P.
      
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This paper deals with the experimental results for raising induction of rooting and the survival rate of transplantation on tectona after the leafy shoots have been obtained under the culture of shoot-tips in vitro. These results show that the success of rooting is affected by several factors.The principal factors are auxin and its concentration.Three kinds of auxin (i.e.IAA, IBA and NAA) are used for induction of rooting,among them IBA is considered to be the best.The efficiency of rooting is apparently affected...

This paper deals with the experimental results for raising induction of rooting and the survival rate of transplantation on tectona after the leafy shoots have been obtained under the culture of shoot-tips in vitro. These results show that the success of rooting is affected by several factors.The principal factors are auxin and its concentration.Three kinds of auxin (i.e.IAA, IBA and NAA) are used for induction of rooting,among them IBA is considered to be the best.The efficiency of rooting is apparently affected by the physical state of the medium.When the concentration of sucrose in MS medium is raised to 4—6% the rooting rate can be increased and the root systems can grow rapidly and profusely. However,when the temperature of culture is below 22℃,the rate of inducing roots is inhibited.Rootings of shoots are sensitve to temperature.The period from the first to the eighth days after the induction of rooting is considered as a sensitive period. After cutting off 5 mm portions below the nodes from the lowen part of stems,the base of these cuttings is soaked in 500 ppm IBA solution for 9 hrs,then place the cuttings into the filter paper bridges standing in a liquid MS medium free from plant growth regulators which containing 4% sucrose,and incubated at 24—28℃.After 2—3 weeks the root system is formed.The rooting rate obtained is 95—100%. Before root induction,what is more important for raising the survival rate of transplantation for plantlets is to place rootless-plantlets under natural diffuse light (ca.5000 Lux.) in vitro before root induction.After transplantation,if temperature is controlled below 27℃,and the relative humidity above 85%, 90—95% of rooting can be obtained.

影响诱导生根效果的主要因素有生长素种类和浓度,其中以 IBA 诱导效果最好。培养基的物理状态也明显影响生根效果。MS 培养基中的蔗糖浓度提高到4—6%,可提高生根率,利于形成发达的根系。温度对根的发生是敏感的,在诱导生根开始的1-8天是一个敏感期,低于22℃明显地抑制根的发生和生长。诱导生根前将无根幼苗置于自然散射光下培养,移栽后尽量缩短加罩保湿时间,对提高试管苗移栽成活率尤为重要。移栽后温度控制在27℃以下。空气湿度在85%以上,加罩时间7天,成活率可达90-96%。

This experimed was carried out on the sown area of Astragalus adsurgens in sendarid Wuqi County during the period from 1980 to 1985. The survey showed that the life of Astragalus adsurgens from thrivingness to decline is a rapid succession series. Its importance value changed obviously. Astragalus adsurgens grew luxuriantly from 3 to 5 years, while the growth of natural herbs were restrained. Astragalus adsurgens can fully use water in soil with a developed root system. The water in declined Astragalus adsurgens...

This experimed was carried out on the sown area of Astragalus adsurgens in sendarid Wuqi County during the period from 1980 to 1985. The survey showed that the life of Astragalus adsurgens from thrivingness to decline is a rapid succession series. Its importance value changed obviously. Astragalus adsurgens grew luxuriantly from 3 to 5 years, while the growth of natural herbs were restrained. Astragalus adsurgens can fully use water in soil with a developed root system. The water in declined Astragalus adsurgens grassla- nd was faster than that in natural grassland and farmland. The soil moisuret in upper layer of soil in declined Astragalus adsurgens grassland was higher than in natural grassland and farmland, advancing the growth of other plants. Astragalus adsurgens can improve the soil structure and change its physical and chemical properties. Thus, the goal of improving and bettering soil, as well as promoting the plant yield can be attained.

本试验于1980-1985年在半干旱的陕西省吴旗县沙打旺飞播区进行。试验结果表明:沙打旺从兴盛到衰败,出现一快速演替系列,其重要值有明显的变化。第3-5年沙打旺生长繁茂,草地内天然草受抑制。沙打旺能利用发达的根系,充分利用土壤水分。衰败沙打旺草地水分渗透速率比天然草地和农地快,上层土壤含水量恢复较好,这样,其它植物在衰败地上长得更好。沙打旺可改良土壤结构、改变土壤理化性质,达到改土培肥,促进植物增产的目的。

Our experimental results showed,paclobutrazol is very effective to controlovergrowing and promote tillering of late rice seedlings by means of spraying300 ppm paclobutrazol at 200 jin per mu at the stage of one mature leaf and onenew leaf of Iate rice seedlings.The height of the treated seedlings decreased by1/3—1/4 as against that of the control and the number of the tillers of the trea-ted seedlings raised by 80—120%.The physiological effects of paclobutrazol on the rice seedlings are sproutingvigorous roots,increasing...

Our experimental results showed,paclobutrazol is very effective to controlovergrowing and promote tillering of late rice seedlings by means of spraying300 ppm paclobutrazol at 200 jin per mu at the stage of one mature leaf and onenew leaf of Iate rice seedlings.The height of the treated seedlings decreased by1/3—1/4 as against that of the control and the number of the tillers of the trea-ted seedlings raised by 80—120%.The physiological effects of paclobutrazol on the rice seedlings are sproutingvigorous roots,increasing the ability of absorbing Nitrogen,increasing the contentof Nitrogen and chlorophyll and promoting the net photosynthetic rate of theseedlings.These are very advantageous to promote vegetative and reproductivegrowth of the treated rice plants in the Paddy-field period after transplanting.The results of normal field experiment and large area contrast experimentshowed that the yield of the treated raised by 10% as against that of the control.

本试验以常规稻6—38和杂交稻威优64等六个品种为材料,进行了新型植物生长调节剂——多效唑,对培育二晚壮秧和生理基础与增产效果的研究。试验结果表明;二晚秧苗在一叶一心期,每亩喷300PPM 浓度的多效唑100公斤药液,能有效地对二晚秧苗起到控长、促蘖、培育壮秧的作用。处理后秧苗的高度比对照降低1/3~1/4,分蘖数增加80~120%,叶片表现短、宽、厚,苗体矮壮。这种壮秧移栽本田后无败苗现象,没有明显返青期,禾苗早生快发,分蘖多、有效穗增加。多效唑对于秧苗的生理效应表现为;增加秧苗的发根力,具有发达的根系,吸氮能力增强,苗体含氮量和叶绿系含量增加:光合速率增强。处理后的秧苗,碳——氮代谢均旺,而且这种生理效应一直维持到抽穗期,有利于营养体生长和籽粒灌浆结实。试验表明,多效唑处理后水稻能增产10%左右。

 
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