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rhizoctonia
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  丝核菌
    Studies on the Resistance Mechanism of Rhizoctonia Cerealis to Tebuconazole
    禾谷丝核菌(Rhizoctonia Cerealis)对戊唑醇的抗性机制研究
短句来源
    Studies on the Host Range of Rhizoctonia Ceralis
    禾谷丝核菌生物学的研究——Ⅲ.寄主范围
短句来源
    Studies on Esterase Isoenzymes of Rhizoctonia Isolates From Some Crops in Jiangsu Province
    江苏省几种作物丝核菌酯酶同工酶研究
短句来源
    A DOUBLE STRANDED DNA MYCOVIRUS IN RHIZOCTONIA SOLANI
    棉立枯丝核菌(Rhizoctonia solani)中的一个dsDNA病毒
短句来源
    Studies on the Rhizoctonia solani Kuehn Infecting Epiphyllum ackermunni Haw.
    令箭荷花感染丝核菌(Rhizoctonia solani Kuehn)的研究
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  丝核菌属
    The 2 isolates of multinucleat Rhizoctonia were AG2 anastomosis group of Rhizoctonia solani K hn.
    两株多核丝核菌属于立枯丝核菌(R.solani Kühn)的AG2融合群。
短句来源
    Aureobasidium sp.,Alternaria sp.,Phoma sp.,Penicillium sp.,Trichothecium sp.,Fusicoccum sp.,Rhizoctonia sp.,Mucor sp.,Colletotrichum sp.,Botrytis sp.and Fusarium sp..
    、丝核菌属(Rhizoctonia sp.) 、毛霉属(Mucor sp.)
短句来源
    Study on several kinds of fungus genus Rhizoctonia from rice in Guangxi Province by restriction fragment length polymorphism-PCR
    广西水稻上几种丝核菌属真菌的PCR-RFLP分析
    The fungus genus Rhizoctonia DC belongs to Agonomycetales Hyphomycetes, Deteromycotn, i. e. anamophic Ceratobasidium, Thanatephorus etc. , widespread. In a wide sense also used for mycelial pathogens bolong to Epidorhiza (Tulasnella), opadorhiza (Cebacina),Thanatophyton (Helicobasidium), and even to ascomycetes (Ascorhizoctonia).
    丝核菌属(Rhizoctonia DC)真菌属半知菌门的丝孢纲(Hyphomycetes),无孢目(Agonomycetales),有性阶段为Ceratobasidium、Thanatephorus等担子菌的属,甚至与子囊菌(Ascorhizoctonia)有关。
短句来源
    The method of anastomosis grouping had become the most useful tool toward understanding genetic diversity in Rhizoctonia and applied successfully in classifying Rhizoctonia into different groups in the early 70's of 20 century.
    丝核菌属真菌特殊的形态特征使其种间的区分和鉴定相当困难,70年代提出的菌丝融合群分类法是当前对该属真菌最成功的分类手段,但它不能提供融合群间或亚群间及融合群内或亚群内更多的遗传分化及系统演化信息。
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  “rhizoctonia”译为未确定词的双语例句
    A SELECTIVE MEDIUM FOR RHIZOCTONIA SOLANI
    Rhizoctonia solani的一种选择性培养基
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    THE EFFECT OF GLIOCLADIUM VIRENS (GVP) ON THE DAMPING-OFF OF CUNNINGH AMIA LANCEOLATA SEEDLINGS CAUSED BY RHIZOCTONIA SOLANI
    Gliocladium virens(GVP)菌粉对Rhizoctonia solani引起的杉苗立枯病的影响
短句来源
    ANTAGONISM OF GLIOCLADIUM VIRENS (GVP) TO RHIZOCTONIA SOLANI
    Gliocladium virens生物型GVP对Rhizoctonia solani的抗生现象
短句来源
    COMPARISONS OF THE PROPERTIES OF NEW ANASTOMOSIS GROUP 8 AND AGS OF RHIZOCTONIA SOIANI KUHN IN CHINA
    中国Rhizoctonia solani Kuhn新的菌丝融合群与其它各群诸性质的比较
短句来源
    Characteristics and Pathogenicity Differentiation among CAG1 Isolates of Rhizoctonia cerealis Vander Hoeven from Wintor Wheat in Jiangsu
    江苏小麦纹枯病菌(Rhizoctonia Cerealis Vander Hoeven)CAG_1群菌株的特性和致病力分化
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  rhizoctonia
We studied the fungicidal activity of a biological preparation from the fungi of the genus Chaetomium against soil phytopathogenic fungi Rhizoctonia solani and Fusarium oxysporum.
      
The highest (98.8%) inhibitory activity was observed on the third day of the interaction with Rhizoctonia solani.
      
Interaction of proteinases secreted by the fungal plant pathogen Rhizoctonia solani with natural proteinase inhibitors produced
      
The fungal plant pathogen Rhizoctonia solani Kuhn.
      
The plants were inoculated by short toothpicks incubated with RH-9, a virulent isolate of the pathogenic fungus,Rhizoctonia solani, which causes rice sheath blight.
      
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The damping-off of the coniferous seedlings was a serious problem in the Northeast China.In nurseries of Larix olgensis,Pinus sylvestries var.mongolica,P.koraiensis,P.tabulaeformis,and P.densiflora suffered 25%,20%,20-30%,and 10% loss respectively during 1956 to 1961.Much higher disease incidence sometimes occurred in other nurseries.Five types of damping-off were recognized.These were pre-emergent rot,topple-overdamping-off,root-and hypocotylrot,top-killing or rot,and under crowding seeding and dampconditions,the...

The damping-off of the coniferous seedlings was a serious problem in the Northeast China.In nurseries of Larix olgensis,Pinus sylvestries var.mongolica,P.koraiensis,P.tabulaeformis,and P.densiflora suffered 25%,20%,20-30%,and 10% loss respectively during 1956 to 1961.Much higher disease incidence sometimes occurred in other nurseries.Five types of damping-off were recognized.These were pre-emergent rot,topple-overdamping-off,root-and hypocotylrot,top-killing or rot,and under crowding seeding and dampconditions,the blight of one-or-two-year-old seedlings also occurred.Among these types,thetopple-over damping-off was more common and severe,but such kind of damping-off was ab-sent in the nurseries of P.koraiensis.During the period from 1956 to 1961,isolations were made from 7844 damping-off seed-lings of different nurseries from 22 localities and three causal organisms belonging to namelyRhizoctonia,Pythium,and Fusarium were obtained.Among them,Rhizoctonia spp.was themost prevalent.Under crowed conditions and with high air humidity,Rhizoctonia spp.alsoattacked the above ground parts of one or-two-year-old seedlings,causing the seedling blight.The degree of damage due to the damping-off in the nurseries was highly correlated withthe location of the nurseries and the cultural practices.The damage was usually muchgreater when the nurseries were situated at the lower ground with higher water table or atthe foot of hill-side.Great damage was also associated with high rate of seeding.It wasshown that those cultural practices which promoted the earlier emergence of the seedlingsreduced the disease infection.Thus a method was adopted in the nurseries by mixing theseeds with fine sands and snow together and keeping them in cellar during the winter,and afterthat soaking the treated seeds with water for several days before sowing in order to hastenthe germination.Thus a good stand of seedlings with little damage of seedling blight re-sulted.

松苗立枯病是东北地区针叶树育苗上的重要问题,其中以落叶松、樟子松、和红松等幼苗发病较重,油松和赤松等幼苗发病为轻。幼苗发病征状有土内腐死、猝倒、立枯、地上腐烂、和一、二年生大苗发生枯萎落叶等五个类型。诱致松苗发生侵染性立枯病的病菌,有 Rhizoctonia、Pythium 和 Fusarium等三种菌类,其中 Rhizoctonia 尤为主要。松苗立枯病发生的轻重与育苗措施有密切关系,地势低洼或位于山脚下坡的苗圃或苗床,一般发病较重。种子经雪藏混砂催芽处理后,能提早种子萌芽、出土和齐苗,有降低发病程度的作用。光照多少对幼苗发病有影响。根据苗圃的调查观察,全光育苗发病率低,遮蔭育苗发病率高;但在沈阳试验结果还不能证实这一点,相反的半遮蔭育苗要好些。

According to the results obtained in 1956 to 1961,the occurrence of damping-off in theconiferous nurseries generally first appears in the middle of May,prevails in the end of Mayto the middle of June,and stops in the beginning of July to the middle of August.In average,the duration of damping-off in nurseries continues about two months or even more,but theprevalent period lasts only twenty to thirty days.The dates of the first appearance and theperiods of duration,however,varied with different localities,years,and...

According to the results obtained in 1956 to 1961,the occurrence of damping-off in theconiferous nurseries generally first appears in the middle of May,prevails in the end of Mayto the middle of June,and stops in the beginning of July to the middle of August.In average,the duration of damping-off in nurseries continues about two months or even more,but theprevalent period lasts only twenty to thirty days.The dates of the first appearance and theperiods of duration,however,varied with different localities,years,and kinds of conifers.The soil temperature for disease development is over a range of 11 to 30° with an optimumat 18 to 25℃,but each causal organism tends to have a different optimum.Thus Rhizoctoniadamping-off usually occurs at 18 to 22℃,Pythium at 17 to 20℃,and Fusarium at 23 to 28℃.Therefore,Rhizoctonia and Pythium are secured in the early period of the growing season,lateron when the soil temperature goes up,the fusarial damping-off seedlings may be obtained.However,if the soil temperature is rather high in the early growing season,Fusarium mayalso be isolated from the diseased seedlings and when the conditions reverse,the percentageof diseased seedlings due to Fusarium infection goes down again.This condition is only truefor nurseries of Larix olgensis and Pinus sylvestries var.golica,while not true for nurseriesof P.koraiensis.From the results of four years' records and experiments,it is shown that high precipita-tion with high frequencies,or high soil water content during the susceptible stages of thegrowing period of coniferous seedlings,generally favors the development of damping-off in thenorth-east provinces.Although the soil temperature has certain effect on damping-off,but itis not critical for the disease development.In a certain locality,where the fluctuation of soil pH is inconspicuous during the growingseason,the correlation between the soil pH to the disease development is not significant.Besides the enviromental factors,the total percentage of disease incidence is also in-fluenced by the duration of the infecting period.

根据六年来的资料分析,在东北各地松苗立枯病发生的开始时期,一般多在5月中旬,北部则稍迟;流行盛期在5月下旬至6月上、中旬间,为期将近一个月;发病休止期约在7月初旬至8月中旬,差异比发病开始时期大。病害发生延续期约45—82天,平均发病期为61.4天。红松幼苗发病与流行盛期较晚,与樟子松和落叶松有所不同。三种立枯病菌病苗的出现时期受土壤温度的影响。丝核菌(Rhizoctonia)病苗发生最多在土温18—22℃,腐霉菌(Pythium)在17—22℃,镰刀菌(Fusarium)在23—28℃,所以一般早期发生的病苗主要为丝核菌侵染所致,其次为腐霉菌,在后期则多数为镰刀菌,但如早期土温较高时,亦有较多的镰刀菌病苗。总的发病土温范围是11—30℃,适温为18—25℃,红松幼苗的发病土壤适温还要高些。松苗立枯病在东北地区的流行主要受土壤含水量和降雨量的影响。松苗在生长感染期间,如遇雨量大和次数多或土壤含水量高时,则有利于发病,几天后在流行曲线上即可出现发病率的高峯。土壤温度不是病害流行的主要限制因素,因为在幼苗生长期间,土温范围都适宜于立枯病的发生。在同一地区的发病期间,苗床土壤 pH 值的变动并不显著,故在同一地区病...

根据六年来的资料分析,在东北各地松苗立枯病发生的开始时期,一般多在5月中旬,北部则稍迟;流行盛期在5月下旬至6月上、中旬间,为期将近一个月;发病休止期约在7月初旬至8月中旬,差异比发病开始时期大。病害发生延续期约45—82天,平均发病期为61.4天。红松幼苗发病与流行盛期较晚,与樟子松和落叶松有所不同。三种立枯病菌病苗的出现时期受土壤温度的影响。丝核菌(Rhizoctonia)病苗发生最多在土温18—22℃,腐霉菌(Pythium)在17—22℃,镰刀菌(Fusarium)在23—28℃,所以一般早期发生的病苗主要为丝核菌侵染所致,其次为腐霉菌,在后期则多数为镰刀菌,但如早期土温较高时,亦有较多的镰刀菌病苗。总的发病土温范围是11—30℃,适温为18—25℃,红松幼苗的发病土壤适温还要高些。松苗立枯病在东北地区的流行主要受土壤含水量和降雨量的影响。松苗在生长感染期间,如遇雨量大和次数多或土壤含水量高时,则有利于发病,几天后在流行曲线上即可出现发病率的高峯。土壤温度不是病害流行的主要限制因素,因为在幼苗生长期间,土温范围都适宜于立枯病的发生。在同一地区的发病期间,苗床土壤 pH 值的变动并不显著,故在同一地区病害流行与 pH 值关系亦不大。当年病害发生总百分率的高低,除受气候因素的影响外,还受病害发生延续期长短的影响。如发病延续期久,则总的发病率较高。

In recent years,the Rhizoctonia blight of rice in southern part of Kiangsi province hasassumed an epidemic scale.The disease was found to be encouraged by close planting and high nitrogen fertilization.In general,semi-glutinous rice varieties were more susceptible than non-glutinous and glutinous.There were also varietal difference in susceptibility within each group.Effectiveness of sweeping out the sclerotia off the flooded fields before planting and apply-ing fungicidal materials on flooded fields before...

In recent years,the Rhizoctonia blight of rice in southern part of Kiangsi province hasassumed an epidemic scale.The disease was found to be encouraged by close planting and high nitrogen fertilization.In general,semi-glutinous rice varieties were more susceptible than non-glutinous and glutinous.There were also varietal difference in susceptibility within each group.Effectiveness of sweeping out the sclerotia off the flooded fields before planting and apply-ing fungicidal materials on flooded fields before planting and on growing plants in diseasecontrol were studied.Application of 1,500 kg.per hector of tea seed cake before plantingappeared to be promising.

近年来水稻纹枯病在江西南部地区发生普遍而严重,已成为水稻丰产的障碍。株间光照弱,温度高,通风不良,相对湿度高会促进病害的严重发生。在农业栽培措施中,肥料,尤其是氮素肥料对发病影响最大,氮肥愈多病害愈重,肥料配合与施用方法和插秧密度也影响病害的发生,分蘖后浅水灌溉,发病较轻,合理落水晒田可抑制病势发展,不当的栽培技术引起水稻倒伏,会促进病害剧烈发展,而病害的加重又促进植株倒伏。水稻感病程度的轻重依次为粳、籼、糯。粳稻一般发病较重。品种间抗性差异极大,但尚未见免疫品种。同一品种不同品系也有差异,经过选育的新品系,抗病程度有一定增强。在防治上,捞除田间菌核有一定防病作用。插秧前,利用药剂消毒、稻田淹水层,防病增产效果较大,其中茶籽饼液药效最好,田间防治效果71.5—95.8%,增产稻谷6.8—47.3%。消毒早稻田后,对晚稻防病增产仍有残效。

 
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