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棉铃虫     
相关语句
  cotton bollworm
    Biochemical Characters and Gene Cloning of Aminopeptidase N-Receptor for Bt Toxin in Cotton Bollworm and Its Function in Relation to Bt Resistance
    棉铃虫Bt毒素受体蛋白生化特性、基因克隆及其与抗性的关系
短句来源
    Studies on the Mechanisms of Target Site-associated Organophosphorus Resistance in Cotton Bollworm, Helicoverpa Armigera (Hübner)
    棉铃虫Helicoverpa armigera (Hübner)对有机磷杀虫剂靶标抗性机制的研究
短句来源
    ECONOMIC THRESHOLDS OF THE SECOND GENERATION OF COTTON BOLLWORM IN NORTH CHINA
    华北棉区第二代棉铃虫的经济阈值
短句来源
    AN ANALYSIS ON POPULATION FLUCTUATION AND DAMAGE CHARACTERISTICS OF COTTON BOLLWORM IN COTTON AREAS OF NORTH CHINA
    华北棉区棉铃虫种群动态与其为害特征分析
短句来源
    Study on the Cotton bollworm in the wheat-fetid
    麦田棉铃虫研究
短句来源
更多       
  bollworm
    Biochemical Characters and Gene Cloning of Aminopeptidase N-Receptor for Bt Toxin in Cotton Bollworm and Its Function in Relation to Bt Resistance
    棉铃虫Bt毒素受体蛋白生化特性、基因克隆及其与抗性的关系
短句来源
    Studies on the Mechanisms of Target Site-associated Organophosphorus Resistance in Cotton Bollworm, Helicoverpa Armigera (Hübner)
    棉铃虫Helicoverpa armigera (Hübner)对有机磷杀虫剂靶标抗性机制的研究
短句来源
    ECONOMIC THRESHOLDS OF THE SECOND GENERATION OF COTTON BOLLWORM IN NORTH CHINA
    华北棉区第二代棉铃虫的经济阈值
短句来源
    AN ANALYSIS ON POPULATION FLUCTUATION AND DAMAGE CHARACTERISTICS OF COTTON BOLLWORM IN COTTON AREAS OF NORTH CHINA
    华北棉区棉铃虫种群动态与其为害特征分析
短句来源
    FORECASTING THE OCCURRENCE POPULATION OF SECOND GENERATION BOLLWORM IN DIFFERENT AREAS BY FUZZY COMPREHENSIVE EVALUATION CLASSIFICATION
    Fuzzy综合评估聚类法分区预报二代棉铃虫发生量
短句来源
更多       
  cotton bollworms
    The Preliminary Report of the Effects of 20% Chlorpyrifos EC on Prevention and Control of Cotton Bollworms in the Field
    20%高渗毒死蜱乳油防治棉花棉铃虫田间药效试验初报
短句来源
    Effects of Grain Production Systems on Occurrence of Second Generation Cotton Bollworms in Cotton Fields in South Xinjiang
    南疆不同粮食生产模式对棉田第二代棉铃虫数量的影响
短句来源
    Tannic acid with dose of 0.005% had affected the development profile of GSTs activity in cotton bollworms, indicated by its inhibition on GSTs in 5th and 6th instar larvae (59% and 67% of the control respectively).
    从1龄初孵幼虫开始用0.005%的单宁酸处理棉铃虫幼虫,对5龄和6龄幼虫GSTs的活性有明显的抑制作用,比活力分别为对照的0.59和0.67倍。
短句来源
    3 and 5 isoenzymes of GSTs in cotton bollworms were separated by GSH-sepharose 4B and PAGE from midguts and fat bodies respectively. All the isoenzymes were composed of two subunits with the same or similar molecular weight of about 30 kD.
    用GSH-Sepharose 4B亲和层析柱一步法纯化,获得了纯度较高的GSTs,SDS-PAGE和PAGE结果显示,棉铃虫中肠含有3个GST同功酶,而脂肪体则有5个同功酶,它们亚基的分子量相同或相似,约30kD。
短句来源
    Using a pair of primers designed according to the consensus sequences of class I and class III GST genes in Lepidoptera insects, we cloned 219 bp fragment of GST from midguts and fat bodies in cotton bollworms by RT-PCR. Then 3 cDNAs were obtained with 3'-full length by 3'-RACE method.
    根据鳞翅目昆虫中已发表的Ⅰ类和Ⅲ类GST基因的保守序列设计一对引物,用RT-PCR方法从棉铃虫中肠和脂肪体中分别克隆出219bp的GST基因片段,然后用3’-RACE的方法克隆出3’端全长序列。
短句来源
更多       
  cotton bollworm control
    Studies on Cotton Bollworm Control with Microbial Insecticides
    微生物农药对新疆棉铃虫的防治效果
短句来源
    2) the resistance risk of H. armigera to the Bt cotton which threat the sustainable use of the Bt cotton as an effective means of cotton bollworm control.
    为合理设置、利用和评价“庇护所”措施,防止棉铃虫对Bt棉产生抗性,提供理论参考。
短句来源
    The results showed that 25% Nongbao 96 EC gave the highest cotton bollworm control and should be extended and applied in a large scale for resistence cotton bollworm control.
    20%神光乳油防治效果也较为理想,可作为防治抗性棉铃虫的良好药剂,大面积示范推广应用。
短句来源
    The system could be used to help optimizing decision for integrated cotton bollworm control and decreasing the degree of calamity.
    据此确定棉铃虫灾变预警警级的等级 ,并指导综合防治决策 ,可使灾变警级预警更加符合实际 ,指导减灾防治更有科学依据
短句来源

 

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  cotton bollworm
Field evaluation of female sex pheromone components of the cotton bollworm,Heliothis armigera
      
High temperature induced diapause in the cotton bollworm shape Helicoverpa armigera
      
Both the parental strain G03 and recombinant strain G033A showed strong insecticidal activity to lepidopteran pests, beet armyworm (Spodoptera exigua), diamondback moth (Plutella xylostella), and cotton bollworm (Helicoverpa amigera), respectively.
      
First results on synchrony between seasonal pattern of pheromone trap captures of cotton bollworm, Helicoverpa armigera and appe
      
Synchrony between development of five corn hybrid varieties of various seasonal growing rates (FAO numbers), seasonal flight pattern of male cotton bollworm, Helicoverpa armigera Hb.
      
更多          
  bollworm
Ovipositional responses of the contton spotted bollworm, Earias fabia (Lepidoptera: Noctuidae) in relation to its establishment
      
Growth of the cotton spotted bollworm, Earias fabia (Lepidoptera: Noctuidae) in relation to consumption, nutritive value and uti
      
Mating, oviposition and gamma sterilization of the spotted bollworm of cotton, Earias insulana
      
Mating, oviposition and gamma sterilization of the spotted bollworm of cotton, Earias insulana Boisd., were studied under laboratory conditions.
      
Dispersal and mating in the field by male pink bollworm, Pectinophora gossypiella, labeled with 32P
      
更多          
  cotton bollworms
Except for some local effects on whitefly oviposition, the induction of SAR by BTH had no effect on either host preference of whiteflies Bemisia tabaci (Gennadius) or on feeding efficiency of cotton bollworms Helicoverpa armigera (Hübner).
      
When all 5 species were offered, the order of preference was as follows: pink bollworms = cabbage loopers >amp;gt; cotton bollworms >amp;gt; tobacco budworms >amp;gt; beet armyworms.
      
Observations on the parasitoids of cotton bollworms in the Punjab were made during 1978 and 1979.
      
While resistant genotypes have been developed for most of the pests and diseases, resistance against cotton bollworms has not been achieved.
      
However, it is known that resistance is not uncommon especially in cotton bollworms.
      
更多          
  其他


Following the report made in 1958, continuous studies were carried on during, 1959--1961in the cotton growing regions of Hupei, Honan, Yunnan and some other provinces. This papermainly deals with the following aspects: geographical distribution of the generations, activities inthe period of late autumn to next spring, different nutritional conditions in relation to develop-ment, selection of host plants by moths, some characteristic habits of adult and larva, some moreimportant factors of outbreak, and some...

Following the report made in 1958, continuous studies were carried on during, 1959--1961in the cotton growing regions of Hupei, Honan, Yunnan and some other provinces. This papermainly deals with the following aspects: geographical distribution of the generations, activities inthe period of late autumn to next spring, different nutritional conditions in relation to develop-ment, selection of host plants by moths, some characteristic habits of adult and larva, some moreimportant factors of outbreak, and some key points of control. The generations produced in different regions may be classified into four belts: 1. Three-generation-belt——localized at 40°N northword; 2. Four-generation-belt——between 32--40°N; 3Five-generation-belt——25—30°N; 4. Six-generation-belt——generally resided at 25°N southword.There are a few instances of seven generations. Of adult and larval development, different results were obtained from different nutritional con- ditions. When larvae fed with the reproductive organs of cotton plant, their growth rate wasfaster, mortality lower and pupal weight also heavier. The food of adult stage is very important to its fecundity. The highest fecundity was foundwhen the moths fed with pollen of cotton flower and 10%. water diluted honey. However, 10—30% cane suger solution was also good. It seems that the moths are highly selective in visiting plants. They visit onions for takingfood from the onion flowers and peas for laying eggs only. The cotton plant is an importanthost for egg laying, but not a favorable food plant for the adult. On the other hand, the sunflower is a good food plant, for adult but not a favorable host for oviposition. There are three main times of adult flight. In the evening, about 19:30—20:30 PM, theadults fly for feeding and oviposition. Mating flight was found at about 1:30—4:00 AM. Atdawn, it was very inactively. Some points of larval habits are needed to mention: The egg hatches mostly at 12:00--18:00PM. The molting period is mostly at night. There is a resting period before molting. The restingperiod of larva becomes longer following its instar increases. The larva always molt outside theboll, and after molting, it usually bores into a new boll to feed which takes place ordinarily at5:30--12:00 AM. The third to sixth instar larvae possess a very large feeding capacity, the averagetotal is about 22.3 squares, flowers and bolls. The basic overwintering pupal population is closely related to the population of first generationin the next spring. The amount of rainfall directly effects the population of various generationsof cotton bollworms. Generally, when the annual amount of rainfall in the Yellow river cottoncultivating region is higher than ordinary year, or when the amount of rainfall in Yangtze riverregion is lower than ordinary year, and the relative humidity of both regions usually keeps around80% which will then very favorable to the cotton bollworms. Storm may wash off and kill theeggs and the young larvae. Due to rainfall in the pupal stage, soil contains too much water whichis unfavorable to the pupae and also to the emergence of moths. According to the various environ-mental conditions, the population of the cotton bollworm in Yellow river region maybe classified into four types: 1. Up grade type——population gradually increases from the firstto the last generation. 2. Down grade type——population decreases in each 3. Midhump type——The highest peak locates in the middle generation. 4. Saddle type——The population of the middlereaches the lowest and much higher at both ends. Besides the chemical control, some other aspects are considered more important in checkingthe population of cotton bollworms. They are the elimination of overwintering pupae by meansof various methods, the destruction of honey producing flower plants in spring in order to elimi-nate the food sources of adults, the attraction of moths by means of different kinds of light andalso the tree stick bundle method, etc.

继续1958年棉铃虫研究工作报告之后,1959—1960年又进一步在湖北、河南和云南等省作了研究,本文主要包括棉铃虫的世代分布带,晚秋、冬春活动情况,不同饲料对生长发育的影响,成虫对寄主植物的选择,成虫和幼虫活动的规律性,大发生的特点和防治关键。 其发生世代大致可分四个地理带:1.40°N以北,约发生3代;2.32-40°N是4代区;3.25-32°N是5代区;4.25°N以南一般6代,个别地区7代。如化蛹后5天以上其眼域外缘的4个小斑点没有变化,即为休眠蛹。 不同食料条件对成虫和幼虫生长发育影响很大。幼虫取食植物的繁殖器官,营养良好,则死亡率低、生长快、蛹较重、成虫繁殖力也高。成虫补充营养不同,其产卵量有显著差异,喂以棉花花粉加10%蜂蜜水产卵最高,单喂10—30%蔗糖水也很好,蔗糖太浓或单喂各种花产卵都降低,喂以植物营养器官则产卵很少或不产卵。 成虫对不同寄主植物有选择性。可分为取食寄主、产卵寄主、取食兼产卵寄主。如大葱、洋葱等则仅取食而不产卵;而豌豆等是产卵寄主,未见成虫取食;棉花等以产卵为主;向日葵等则以取食为主,产卵较少。成虫产卵对棉株生长势也有选择,一般棉株生长茂盛,颜色浓...

继续1958年棉铃虫研究工作报告之后,1959—1960年又进一步在湖北、河南和云南等省作了研究,本文主要包括棉铃虫的世代分布带,晚秋、冬春活动情况,不同饲料对生长发育的影响,成虫对寄主植物的选择,成虫和幼虫活动的规律性,大发生的特点和防治关键。 其发生世代大致可分四个地理带:1.40°N以北,约发生3代;2.32-40°N是4代区;3.25-32°N是5代区;4.25°N以南一般6代,个别地区7代。如化蛹后5天以上其眼域外缘的4个小斑点没有变化,即为休眠蛹。 不同食料条件对成虫和幼虫生长发育影响很大。幼虫取食植物的繁殖器官,营养良好,则死亡率低、生长快、蛹较重、成虫繁殖力也高。成虫补充营养不同,其产卵量有显著差异,喂以棉花花粉加10%蜂蜜水产卵最高,单喂10—30%蔗糖水也很好,蔗糖太浓或单喂各种花产卵都降低,喂以植物营养器官则产卵很少或不产卵。 成虫对不同寄主植物有选择性。可分为取食寄主、产卵寄主、取食兼产卵寄主。如大葱、洋葱等则仅取食而不产卵;而豌豆等是产卵寄主,未见成虫取食;棉花等以产卵为主;向日葵等则以取食为主,产卵较少。成虫产卵对棉株生长势也有选择,一般棉株生长茂盛,颜色浓绿、组织幼嫩、蕾、花和嫩叶多则产卵多,反之则少。 成虫昼夜活动有一定规律性,从飞翔看来,可分为三个主要阶段:黄

~~

棉鈴虫(Heliothis armigera(Hübner))在塔里木河上游地区一年主要发生3代,少数2代或4代。从第2代起开始出現部分滞育蛹,第3代蛹绝大多数滞育,仅少数可在当年羽化。早春有效活蛹数与当年第一代的卵量成正相关。凡5—7月的降水量在3.7—20.5毫米,温湿度系数在1.52—2.14之間者,发生就重。发育速度、繁殖力与幼虫期食料有密切关系。受害作物玉米重于棉花,陆地棉重于海島棉,晚熟品种重于早熟品种。各代均为害玉米,而为害棉花从第二代起开始。六六六烟剂防治玉米上的棉鈴虫效果良好,未防治区玉米籽粒損失为防治区的2.6倍。飞机噴药粉防治玉米上的棉鈴虫比防治棉花上的效果好。

This paper reports the results of studies on the nuclear polyhedrosis virus-of the cotton bollworm Heliothis armigera.The virus was isolated in 1974 from dead boll-worms collected from cotton fields in Chinchow district of Hupeh Province.It was designated as VHA-273.It is observed that the polyhedra are hexagonal,pentahedron,cubical or irregular in shape,varying from 1.25 to 5.0 p in diameter.Serious pathological changes were in the fat-body,epidermis,tracheal matrix and other tissues of the diseased insects...

This paper reports the results of studies on the nuclear polyhedrosis virus-of the cotton bollworm Heliothis armigera.The virus was isolated in 1974 from dead boll-worms collected from cotton fields in Chinchow district of Hupeh Province.It was designated as VHA-273.It is observed that the polyhedra are hexagonal,pentahedron,cubical or irregular in shape,varying from 1.25 to 5.0 p in diameter.Serious pathological changes were in the fat-body,epidermis,tracheal matrix and other tissues of the diseased insects and the former two seemed to be the most susceptible tissues.The muscle bundles were not affected.Our bioassay showed that the susceptibility of the larvae to the NPV varied with dosage,larval instar and temperature.The first and second instars were the most susceptible stages;and their mortality rates at 1×106 PIBs/ml were 85% and 80% and the time lasting were 6 and 8 days respectively.Larvae of fifth and sixth instars were not so susceptible,especially when the temperature exceeded 33℃.Cross infections of the NPV with tobacco budworm,Heliothis assulta,was susccessful.In 1975,from July to September,field tests with the NPV to control bollworms were made in cotton fields about 102 mil's at Kung-an County of Hupeh Province.The concentrations used were 1.5×1010 PIBs/mu,3×1010 PIBs/mu and 6×1010 PIBs/mu.The results showed that the NPV was better than the chemical insecticides 1605+DDT.Combined use of the NPV with dilute sevin and Bacillus thurin-giensis suspensions were also tested;and the results were either better or as effective as the NPV or sevin used alone.The application of the NPV VHA-273 to control bollworms in the field seems promising.

自1973—1974年以来,在湖北荆州地区微生物站筛选出一批棉铃虫病毒毒株,其毒力均为80%以上,有的高达100%。其中毒力较强而又比较稳定的VHA-273,经病虫组织切片观察,确定其为核多角体病毒。1974—1975年除对棉铃虫病毒病的组织病理变化作了初步观察外,又继续在室内外对病毒的毒力、剂量与虫龄、温度的关系,及寄主饲料对病毒产量的影响等,进行了一系列的试验,并用VHA-273生产部分病毒,为大田防治试验作了准备。 1975年7—9月,用VHA-273生产的病毒,在湖北公安县雷州公社约102亩的早发棉田进行示范试验,对第2代及第4代棉铃虫的防治效果,先后调查了5次,最后对试验田、对照田及邻田又作了天敌调查,结果均表明试验田的虫口下降率,花、蕾及青铃受害率等,均低于1605+DDT及西维因的对照田,为棉田的生物防治提供了有希望的微生物农药。 VHA-273棉铃虫核多角体病毒,对烟青虫的毒力很强,对两种害虫能交叉感染。因此,它可用于烟青虫的防治。

 
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