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毒力     
相关语句
  virulence
    DETERMINATION OF VIRULENCE OF COTTON WILT PATHOGEN VERTICILLIUM DAHLIAE KLEB.
    大丽轮枝菌在棉花上的毒力测定
短句来源
    The Virulence Wave Law of Pesticides and Their Application
    农药的毒力波动规律及应用
短句来源
    An Analysis of Virulence Frequency of Blumeria graminis Dc. Speer in Northeastem China
    中国东北小麦白粉菌(Blumeria graminis Dc.speer)毒力频率分析
短句来源
    Relationsmp Between Culture Condition and Virulence of Beauveria Bassiana
    白僵菌有关培养条件及其与毒力关系的研究
短句来源
    THE RELATIONSHIPS BETWEEN CULTURAL CHARACTERS, VIRULENCE AND dsRNA OF CRYPHONECTRIA PARASITICA
    栗疫病菌的培养性状、毒力与dsRNA的关系
短句来源
更多       
  toxicity
    Molecular Biology of Bacillus theuryngiensis Strains B-Hm-16 and B-Pr-88 with High Toxicity to Lepidoptera
    对鳞翅目害虫高毒力Bt菌株B-Hm-16和B-Pr-88的分子生物学研究
短句来源
    ISOLATION AND TOXICITY TRIALS OF STRAIN 187
    187菌株的分离及其毒力试验
短句来源
    The Toxicity Determination of 55%of Lindane Glue Suspehsion for Ceracris kiangus
    55%林丹胶悬液对竹蝗的毒力测定
短句来源
    STUDIES ON BIOASSAY FOR TOXICITY OF BT 8010 USING TWO KINDS OF INFECTIVE FEED
    不同饲毒法测定Bt8010毒力效价研究
短句来源
    TOXICITY AND APPLICATION EVALUATION OF SEVERAL INSECTICIDES FOR THE CONTROLOF
    几种杀虫剂对棉蚜和粘虫的毒力测定及应用评价
短句来源
更多       
  virulent
    Xenorhabdus and Photorhabdus are entomopathogenic bacteria symbiotically associated with insect pathogenic nematodes. They are highly virulent to insects. 99 strains of symbiotic bacteria were isolated from 9 strains of entomopathogenic nematodes.
    自9个昆虫病原线虫品系离体培养得到99株共生细菌菌株,通过生物测定从每个共生菌品系中筛选出高毒力菌株,比较后得到高毒力共生菌品系Ssy3及高毒力菌株Ssy3-9B。
    and Nomurae spp. Among them, a Bacillus thuringiensis isolate numbered Hu was the most virulent to Helicoverpa armigera based on bioassay. Toxicity of Hu to H. armigera lavae was higher than that of Bt7216 which was commonly used in biopesticide plants, with LC50 of Hu and Bt7216 were 15.1μg/mL and 26.28μg/mL respectively.
    得到一株对棉铃虫高毒的苏云金杆菌菌株Hu,其毒力比普遍使用的Bt菌系7216高,二者的LC50分别为15.1μg/mL和26.28μg/mL。
    Finally FCT10.10 was selected as the highest virulent strain for production.
    最终筛选出FCT10.10为诱变筛选出的高毒力菌株,可作为生产菌株。
短句来源
    The No. 2 physi-ologic race was virulent to the host with Ht_1 gene and caused necroticlesions,but it was avirulent to the host with Ht_2 gene and caused chlo-rotic lesions,with a virulence formula t_2/Ht_1.The No.
    接种在具Ht_1单基因抗性寄主上表现有毒力产生萎蔫斑,而对Ht_2鉴别寄主表现无毒力产生褪绿斑的菌株属于生理小种2号,其毒力公式为Ht~2/Ht~1。
短句来源
    On basis of pathogenicity to peanut, pea,cowpea and bean two groups of PSV strains could be distinguished. One group including PSV-1 , PSV-13, PSV-P and PSV-E was hig'h virulent to those host plants, and another group including PSV-Mi, PSV-R and PSV-F was less virulent.
    依据对花生、豌豆、蚕豆等寄主植物致病力,将PSV—1、PSV—13 PSV—P和PSV-E划分为强毒力株系,PSV—Mi、PSV—R和PSV—F为弱毒力株系。
短句来源
更多       
  the virulence
    The Virulence Wave Law of Pesticides and Their Application
    农药的毒力波动规律及应用
短句来源
    The Study on the Virulence of a Liquid Preparation of Beauveria Bassiana
    白僵菌液体制剂的毒力研究
短句来源
    The Virulence of Recombinant AcMNPV-AaIT against Spodoptera exigua
    基因重组核型多角体病毒AcMNPV-AaIT对甜菜夜蛾幼虫的毒力研究
短句来源
    Study on the Virulence Genes and Virulence Structure of Phytophthora infestans on Yunnan Potato
    云南省马铃薯致病疫霉毒性基因组成及毒力结构研究
短句来源
    The result showed that the total amount of esterases and the frontier band esterase number were significantly correlated to the virulence, with r=0.9198 and r=0.8820, respectively, and the virulence was poorly correlated to extracellular protease production level and oxalic acid production level.
    对蜡蚧轮枝孢生理生化因子的测定结果表明:蜡蚧轮枝孢的毒力与菌株酯酶总量及前沿带的酯酶量之间呈显著线性相关,相关系数分别为r=0.9198和r=0.8820; 蜡蚧轮枝孢毒力与胞外蛋白酶产生水平以及草酸产生水平之间均无明显相关性。
短句来源
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      virulence
    Correlation between the distribution pattern of virulence genes and virulence of Aeromonas hydrophila strains
          
    In conclusion, there are significant correlation between the distribution pattern of the three virulence genes and the pathogenicity to Carrassius auratus ibebio.
          
    Additionally, there was a positive correlation between the virulence of A.
          
    The virulence, competitive ability, and symbiotic efficiency of 2 Rhizobium leguminosarum bv.
          
    High virulence and competitive ability of the strain tolerant to aluminum was demonstrated by a concurrent inoculation of the seeds with these two strains.
          
    更多          
      toxicity
    The anticholinergic activity was incorporated into the intact esters to overcome the gastric toxicity of indomethacin, not only by blocking the acidic functionality but also by decreasing gastric secretions and motility.
          
    Podophyllotoxin and related analogs present numerous challenges associated with optimal antitumor activity and severe unpredictable toxicity.
          
    None of these compounds showed toxicity for Vero cells.
          
    Ce(NO3)3 exhibited a higher toxicity than La(NO3)3 at the same doses.
          
    Medications with higher effect and lower toxicity were screened by comparing the effect of different pesticide treatments.
          
    更多          
      virulent
    hydrophila XS91-4-1 and C2) were strong virulent, two strains (A.
          
    hydrophila ST78-3-3 and 58-20-9) avirulent and the rest middle virulent was to the fish.
          
    hydrophila strains were aerA+hlyA+ahpA+ genotype, and all aerA+hlyA+ahpA+ strains were virulent.
          
    hydrophila isolated from the ahpA positive were virulent to Carrassius auratus ibebio.
          
    Immunobiological properties of native lipopolysaccharides (LPS) from virulent and avirulent strains ofShigella sonnei bacteria (LPS-V and LPS-A, respectively) were studied.
          
    更多          
      the virulence
    Additionally, there was a positive correlation between the virulence of A.
          
    The virulence, competitive ability, and symbiotic efficiency of 2 Rhizobium leguminosarum bv.
          
    Isolation, purification, and identification of the virulence protein VirE2 from Agrobacterium tumefaciens
          
    The aim of this work was isolation of the virulence protein VirE2 for studying its role in T-DNA transportation through the membrane and cytoplasm of eukaryotic cells.
          
    The possible relationship between LPE accumulation and the virulence of Y.
          
    更多          


    The pine caterpiller,Dendrolimus punctatus Walker, has the habit of leav-ing the crown part of a tree and hibernating under the loose bark of thetrunk. The present paper reports the successful control of this pest by treatinga part of the trunk with a DDT suspension. All experiments were carried outat Nanking, 1947-48. When solutions and water suspension containing 5% DDT, 1%γ 666,or 5% 1068 were applied with a brush to the trunk for a width of one footand over-wintering larvae were allowed to crawl over the...

    The pine caterpiller,Dendrolimus punctatus Walker, has the habit of leav-ing the crown part of a tree and hibernating under the loose bark of thetrunk. The present paper reports the successful control of this pest by treatinga part of the trunk with a DDT suspension. All experiments were carried outat Nanking, 1947-48. When solutions and water suspension containing 5% DDT, 1%γ 666,or 5% 1068 were applied with a brush to the trunk for a width of one footand over-wintering larvae were allowed to crawl over the treated area, all theinsecticides tested were found to be effective when freshly applied. After oneweek, how-ever, only preparations containing DDT remained effective. DDTwater suspension was markedly better than DDT in kerosene, soybean oil, oracetone. Trees treated with a 5% DDT water suspension were still very toxic tothe caterpillars at the end of six weeks. The number of caterpillars crawling over a DDT-treated area would notinfluence the toxicity of the DDT film under practical field conditions. In oneexperiment all area of twenty inches square, treated with a 5% DDT suspension,still showed high toxicity to the caterpillars after 1,800 larvae had crawled overthe area in a period of nine days. Caterpillars were found to be more resistant to DDT in summer than inwinter. By increasing either the concentration of DDT to 10-15% or thewidth of the treated area to 2-3 feet, the "trunk treatment method" could beused as well in summer, if the caterpillars were beaten down to the grounedafter the trees had been treated with DDT. Under the field conditions in Nanking, 1947-48, the pine caterpilIars beganto leave the crown part of the trees and seek hibenation quarters in November.They became active again early in March, hence tree should he treated withDDT not later than the dates mentioned above. A total of 157,658 trees were treated with DDT on the Purple Mountain,Nanking, 1948. Examinations showed that larval population decreased 90-99%in the treated area, while in the check area an increase in population of16-350% had been observed.

    本文研究在松树干上涂刷有持久性的药剂以防治越冬松毛虫的可能性。1947—48年在南京试验及实施防治的结果简述如下: (一)在实验室内使越冬松毛虫爬行越过涂有一市尺宽各种药液的松树干的结果,证明5% DDT,1%γ666,与5% 1068的悬液或溶液。在涂药的当天均 有相当高的杀虫效力,惟一周以后γ666与1068完全失效,仅DDT仍保持强大的毒力。DDT水悬液显著较DDT火油、大豆油或丙酮溶液为佳。涂有5%DDT悬液的松树杆曝露田间六星期后,杀死松毛虫能力仍达100%。 (二)据试验的结果,自制的可湿性DDT,内含DDT50%,稀释剂45%,与肥皂5%,尚适宜于防治松毛虫之用。 (三)松毛虫爬行的次数对涂药面积上DDT毒力的影响极微,在二十平方市寸涂有5% DDT悬液的小面积上,9天之内经过1800头松毛虫爬行后,毒力仍未减小,死亡率尚在90%以上。 (四)夏季松毛虫较越冬松毛虫不易杀死。夏季松毛虫抵抗DDT的能力随龄期而增强。试验中显示如增加药液浓度至含DDT 10—15%,或增加涂药的宽度至2—3市尺,夏季幼虫亦能中毒死亡。故树干涂药法亦可应用在夏季防治上,惟必须在涂药...

    本文研究在松树干上涂刷有持久性的药剂以防治越冬松毛虫的可能性。1947—48年在南京试验及实施防治的结果简述如下: (一)在实验室内使越冬松毛虫爬行越过涂有一市尺宽各种药液的松树干的结果,证明5% DDT,1%γ666,与5% 1068的悬液或溶液。在涂药的当天均 有相当高的杀虫效力,惟一周以后γ666与1068完全失效,仅DDT仍保持强大的毒力。DDT水悬液显著较DDT火油、大豆油或丙酮溶液为佳。涂有5%DDT悬液的松树杆曝露田间六星期后,杀死松毛虫能力仍达100%。 (二)据试验的结果,自制的可湿性DDT,内含DDT50%,稀释剂45%,与肥皂5%,尚适宜于防治松毛虫之用。 (三)松毛虫爬行的次数对涂药面积上DDT毒力的影响极微,在二十平方市寸涂有5% DDT悬液的小面积上,9天之内经过1800头松毛虫爬行后,毒力仍未减小,死亡率尚在90%以上。 (四)夏季松毛虫较越冬松毛虫不易杀死。夏季松毛虫抵抗DDT的能力随龄期而增强。试验中显示如增加药液浓度至含DDT 10—15%,或增加涂药的宽度至2—3市尺,夏季幼虫亦能中毒死亡。故树干涂药法亦可应用在夏季防治上,惟必须在涂药后将松毛虫从树上击落,使其在爬返树冠时接触药剂而死亡。 (五)自然情形下,南京松毛虫在十一月即开始下树越冬,至来年三月初开始活动上树,故采用树干涂药法防治下?

    Laboratory evaluation of some recently developed organophosphorus aphicides-acaricides with comparatively,low mammalian toxicity for initial contact toxicitywas conducted from 1960-1962 in Peking.Two aphid apecies(Aphis gossypiiGlover,Rhopalosiphum pseudobrassicae Davis),adult-two-spotted spider mites(Tetranychus telarius L)and adult common houseflies(Musca domestica vicinaMacq.)were tested by direct precision spray methods.Preliminary residualeffectiveness test on corn seedlings against two-spotted spider mites...

    Laboratory evaluation of some recently developed organophosphorus aphicides-acaricides with comparatively,low mammalian toxicity for initial contact toxicitywas conducted from 1960-1962 in Peking.Two aphid apecies(Aphis gossypiiGlover,Rhopalosiphum pseudobrassicae Davis),adult-two-spotted spider mites(Tetranychus telarius L)and adult common houseflies(Musca domestica vicinaMacq.)were tested by direct precision spray methods.Preliminary residualeffectiveness test on corn seedlings against two-spotted spider mites was also car-ried out in greenhouse.The following results were confirmed:1.Dimethoate[0,0-dimethyl S-(N-methyl carbamoylmethyi)dithiophos-phate]possessed high initial contact toxicities both to the aphids(nymphs andapterous adults)and adult two-spotted spider mites.The relative initial con-tact aphicidal and acaric(?)dal toxicities of Dimethoate were found to be approach-ing or superior to those of Demeton.It also exhibited high initial contact toxicitytowards adult houseflies.2.The outstanding initial contact activities exhibited by Metasystox-I to-wards both aphids and two-spotted spider mites were worthy to be fully noted.3.The initial contact aphicidal and acaricidal activities of Demeton-methyland Malathion were considerably lower than those of Dimethoate or Demeton.4.Crude Trithion[0,0-diethyl S-(4-chlorophenylmercaptomethyl)dithio-phosphate]preparations also exhibited high aearicidal activity.Its initial con-tact acarieidal activity was approaching to that of Demeton,while its residualeffectiveness was superior to that of Demeton.5,AC-3741[0,0-diethyl S-(earbamoylmethyl)dithiophosphate]also showedcomparatively high initial contact toxicity against adult two-spotted spider mitesbut its aphieidal activity was not high enough.

    应用液剂定量直接喷布法,对两种蚜虫、棉红蜘蛛、家蝇进行多次室内速效触杀毒力测定,以及在温室进行的棉红蜘蛛残效测定初步表明:(1)乐果对两种蚜虫和棉红蜘蛛的速效触杀毒力均接近或超过 E-1059;对家蝇具有高度的触杀毒力。(2)甲基异 G-1059不论对两种蚜虫或棉红蜘蛛都表现很高的杀虫毒力。(3)甲基 K-1059和马拉硫磷对两种蚜虫和棉红蜘蛛毒力的都不够强。(4)三硫磷对棉红蜘蛛成虫也具有高度的触杀毒力,粗制原油的毒力强度接近 E-1059.三硫磷对棉红蜘蛛的残效相当好。(5)AC-3741对棉红蜘蛛成虫的速效触杀毒力也相当强,杀螨毒力强度约为 E-1059的一半;但对两种蚜虫的毒力不够强。

    ~~

    腊螟杆菌对菜青虫的室内毒力测定显示:4、5令幼虫个体吞食孢子12×10~3个以上,死亡率达100%。对幼虫羣体所致死亡率如下:菌液浓度0.3%及0.5%为89.3—100%,杆菌与 DDT 混合(浓度0.2%+1/6万)或与敌百虫混合(浓度为0.2%+1/8万)死亡率都达100%。苏芸金杆菌液浓度0.3%时,菜青虫死亡率为93.3%;与 DDT 混合液(0.1%+1/6万)或与敌百虫混合液(0.1%+1/8万),死死率分别为87.5%及82.4%。田间毒效腊螟杆菌液浓度0.3%,死亡率为56.5—79.2%,与 DDT 或敌百虫混合喷施(浓度0.2%+1/6万),死亡率为65.5—93.5%。液剂毒效高于粉剂。对玉米螟的室内毒力测定(两种菌液浓度均为0.02—0.5%):腊螟杆菌液处理玉米叶幼虫口服死亡率为68.9—79.2%,苏芸金杆菌液为64.1—75.5%。田间毒效,在春玉米上,两种稈菌单纯菌剂(液剂或颗粒剂)浓度0.1—0.5%,与DDT 混合剂(液剂或颗粒剂)浓度0.1%+0.05%,蛀孔率一般比对照低2.2—31.5%。在夏玉米上腊螟稈菌单纯菌剂(浓度为0.2%),或与 D...

    腊螟杆菌对菜青虫的室内毒力测定显示:4、5令幼虫个体吞食孢子12×10~3个以上,死亡率达100%。对幼虫羣体所致死亡率如下:菌液浓度0.3%及0.5%为89.3—100%,杆菌与 DDT 混合(浓度0.2%+1/6万)或与敌百虫混合(浓度为0.2%+1/8万)死亡率都达100%。苏芸金杆菌液浓度0.3%时,菜青虫死亡率为93.3%;与 DDT 混合液(0.1%+1/6万)或与敌百虫混合液(0.1%+1/8万),死死率分别为87.5%及82.4%。田间毒效腊螟杆菌液浓度0.3%,死亡率为56.5—79.2%,与 DDT 或敌百虫混合喷施(浓度0.2%+1/6万),死亡率为65.5—93.5%。液剂毒效高于粉剂。对玉米螟的室内毒力测定(两种菌液浓度均为0.02—0.5%):腊螟杆菌液处理玉米叶幼虫口服死亡率为68.9—79.2%,苏芸金杆菌液为64.1—75.5%。田间毒效,在春玉米上,两种稈菌单纯菌剂(液剂或颗粒剂)浓度0.1—0.5%,与DDT 混合剂(液剂或颗粒剂)浓度0.1%+0.05%,蛀孔率一般比对照低2.2—31.5%。在夏玉米上腊螟稈菌单纯菌剂(浓度为0.2%),或与 DDT 合剂(0.1%+0.02%),蛙孔率比对照低1.4—17.0%,苏芸金稈菌几无效果。颗粒剂用菌量较液剂差4倍,而毒效与液剂相当。室内毒力测定,两种稈菌对粘虫、梨小食心虫效果很差,对(?)螬无效果。两种稈菌对家蚕健康都有影响,腊螟稈菌液(浓度0.01—0.5%)致死率达80—100%;苏芸金杆菌液(浓度0.1%及0.5%)致死率为55.8%及94.2%。两种稈菌对蜜蜂全无影响,稈菌能存活在蜂蜜内,但繁殖不明显。

     
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