- 更多网络例句与棉铃虫相关的网络例句 [注：此内容来源于网络，仅供参考]
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Trichogramma showed high control efficacy on cotton bollworm eggs after three times of release both in the second and in the third generation bollworm periods. The parasitism on the second and third generation bollworm eggs were 66.0%-70.7% and 76.0%-81.2%, respectively, which were significantly higher than that in the control (second generation: 7.0%-12.3%, third generation: 5.2%-7.4%). And the injury rate of cotton buds and bolls in the second and third generation bollworm were 2.2% and 3.1%, respectively, which were significantly lower than that in the control (second generation:8.5%, third generation: 20.9%). In the second generation bollworm period, number of bollworm eggs or larvae in the Trichogramma released cotton field did not differ to that in the chemically controlled field. But in the third generation, there were significantly less bollworm eggs and larvae in the Trichogramma released cotton field. There were more predators in the Trichogramma released cotton field. These results indicated that cotton boll worm in the transgenic insect-resistant cotton field can he effectively controlled by mass-releasing of T.
结果发现：棉铃虫卵在棉株不同部位的分布差异较大，2代棉铃虫卵主要分布在叶正面、叶背面和茎尖，3代棉铃虫卵主要分布于蕾铃；在放蜂田，赤眼蜂对棉株不同部位棉铃虫卵的寄生率差异较大，2，3代棉铃虫时期对叶正面、叫背面、茎尖、蕾铃的棉铃虫卵寄生率均较高，对叶柄和茎杆处卵的寄生率较低；并以3代棉铃虫时期的寄生率较高；在2，3代棉铃虫时期分别连续释放3次赤眼蜂，对棉铃虫具有很强控制作用，2，3代棉铃虫卵的被寄生率分别为66.0%~70.7%和76.0%~81.2%，均显著高于化防田的自然寄生率（2代：7.0%~12.3%，3代：5.2%~7.4%）；蕾铃被害率分别为2.2%和3.1%，均显著低于化防田（2代：8.5%，3代：20.9%；2代棉铃虫时期，放蜂田和化防田的棉铃虫卵量和幼虫数量差异均不显著，但3代棉铃虫以后，放蜂田棉铃虫卵量和幼虫数量均显著低于化防田，且放蜂田的捕食性天敌数量显著高于化防田。
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Based on the weather data of geographical points and the phenological data of CBW, the single sine model that forecast the occurrence date of cotton bollworm is developed. By using year's data of Shihezi area, parameter of CBW emergence of overwintering generation, first generation and second generation in the Xinjiang region is built under the different low temperature. Based on the above research, the concepts, functional development temperature threshold and functional developmental degree-day, are put forward. Using the data of different station in the Shihezi area, the model is validated
基于地理点的气象数据和棉铃虫物候数据，建立了棉铃虫发生期预测的single sine 模型，利用石河子地区多年的数据，建立了不同发育温度条件下的新疆地区越冬代、第一代和第二代棉铃虫羽化的参数库；在此基础上提出功能发育起点和功能发育日度的概念并修订了模型，利用石河子地区植保站的数据，验证了模型的可行性。
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ABSTRACT Heliothis armigera nuclear polyhedrosis virus , due to its special pestiferous effect on Heliothis armigera and being inno...
棉铃虫核型多角体病毒(Heliothis armigera Nuleopolyhedrovirus，HaNPV)是棉铃虫的天然病原体，对棉铃虫有特异的致死效应，不危害人畜及环境，是进行棉铃虫生物防治的好材料。
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The digital speciemen image of adult Helicoverpa armigera Hubner was acquired using a digital camera in an image acquisition environment.Several methods of image enhancement were covered, including linear smoothing, median filtering, linear greylevel transformation, contrast stretching, image inversing and histogram equalization. Results demonstrated that these methods evidently enhanced the speciemen image of H.
digital image ；本研究以棉铃虫成虫标本作为数字图像源，设计了图像获取环境，以数码相机做为数字图像获取设备获得了棉铃虫成虫的数字图像，介绍了昆虫数字图像增强的方法，包括图像的线性平滑、中值滤波平滑、线性灰度变换、对比度拉伸、图像求反以及直方图均衡化等增强方法，证明这些方法对棉铃虫图像具有明显的增强作用。
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Polyhedrin and virion, which were isolated and purified from Agrotis setegum nuclear polyhedrosis virus, are administered to 3-instar Heliothis armigera larvae with Heliothis armigera nuclear polyhedrosis virus. Both polyhedrin and virion could increase mortality of H. armigera larvae, shorten half mortality time and decrease half mortality concentration.
对黄地老虎核型多角体病毒的多角体蛋白和病毒粒子组分进行分离纯化，分别与棉铃虫核型多角体病毒混合感染三龄棉铃虫幼虫，发现此二种组分均能够提高棉铃虫幼虫的死亡率，缩短半致死时间，降低半致死浓度。
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Key weather factor indices which influenced the occurrence degree of Heliothis armigera Hubner was obtained, and occurrence degree of 2nd, 3rd and 4th generations of Heliothis armigera Hubner was forecasted.
根据河南省新乡市1976~2005年的棉铃虫调查资料和气象数据，分析了影响2、3、4代棉铃虫发生的关键气象条件，得出了影响棉铃虫发生程度的关键气象因子指标，预测了2、3、4代棉铃虫的发生程度。
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However, the Cry1Ac-GFP fusion protein only accreted with peritrophic membrane of resistant strain and showed fluorescence, which suggested that the binding of peritrophic membrane with Cry1Ac toxin protein may result in resistance of larvae of H. armigera to Cry1Ac insecticidal crystal proteins.
比较Cry1Ac杀虫蛋白敏感和抗性棉铃虫幼虫中肠的发光部位，敏感棉铃虫幼虫的中肠围食膜已经消失，肠壁细胞发出强烈的荧光，而抗性棉铃虫的围食膜较健全并发出荧光。
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The life table of natural population of cotton bollworm in cotton was studied. The important factors that caused the death of second and third generation of cotton bollworm in cotton field were predacious natural enemies.
棉铃虫种群数量动态连续12年用捕虫网取样方法对麦田第一代棉铃虫种群发生趋势进行了调查，发现南疆粮棉混作区种植制度的改革已导致棉铃虫成为农业生产的重要害虫，并呈加重趋势发展。
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This result is consistent with the result come from PCRfingerprinting method. The results of the two methods indicate that maize, soybeanand castor-oil plant can act as refuges of Bt sensitive cotton bollworm as non-Btcotton; while sesame and peanut may not.
第三代棉铃虫的六个寄主种群间存在一定的遗传差异；其中，花生种群与其他种群间没有明显的基因交流，遗传分化比较明显；Bt棉上的棉铃虫与普通棉花、大豆、玉米上的棉铃虫敏感种群间基因交流频繁；而与花生、芝麻上的棉铃虫敏感种群间的基因流均不显著，说明它们间有可能不能进行随机交配。
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The results suggest that bothmaize and castor-oil plant could be refuge to provide susceptible individuals and toprolong the effectiveness of Bt-cotton, but peanut and sesame may not.
说明除普通棉花外，玉米、蓖麻能作为庇护所，提供Bt易感棉铃虫与抗虫棉上的棉铃虫个体随机交配，稀释抗性基因频率，防止棉铃虫对转Bt抗虫棉的抗性，而芝麻和花生不适于作为Bt易感棉铃虫的庇护所在田间与转基因棉花套种。
- 更多网络解释与棉铃虫相关的网络解释 [注：此内容来源于网络，仅供参考]
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bollworm：棉铃虫
bog 沼泽,沼泽地 | bollworm 棉铃虫 | bombardment 炮击,轰击
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bollworm：螟蛉,棉铃虫
bogginess沼泽化 | bollworm 螟蛉,棉铃虫 | bolometer 辐射热测量计,电阻式测辐射热计
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Cotton bollworm：棉铃虫
重金属:colored cotton | 棉铃虫:Cotton bollworm | 棉铃虫:cotton worm
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sex pheromone of cotton bollworm：棉铃虫性引诱剂
黏虫性引诱剂、sex pheromone of armyworm | 棉铃虫性引诱剂、sex pheromone of cotton bollworm | 舞毒蛾性引诱剂、disparlure
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cotton worm：棉铃虫
虫害:the worm-eaten | 棉铃虫:cotton worm | 良胜互动:benign interaction
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corn earworm：棉铃虫
corn drill 谷物条播机 | corn earworm 棉铃虫 | corn radish 野萝卜
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Heliothis virescens：烟芽夜蛾,绿棉铃虫
haustorium 吸器[见于植物] | Heliothis virescens 烟芽夜蛾,绿棉铃虫 | Heliothis virescens nuclear polyhedrosis virus 烟芽夜蛾核型多角体病毒
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Heliothis zea：玉米夜蛾,美洲棉铃虫
Heliothis virescens nuclear polyhedrosis virus 烟芽夜蛾核型多角体病毒 | Heliothis zea 玉米夜蛾,美洲棉铃虫 | helix wheel 螺旋轮
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Heliothis armigera：棉铃虫
如玉米螟、粘虫、二化螟、三化螟、稻苞虫的幼虫为害粮食作物;菜青虫为害蔬菜;棉铃虫(Heliothis armigera)的幼虫除为害棉的花蕾、幼铃外,也为害辣椒、番茄等果实,棉红铃虫(Pectinophora gossyp-iella)的幼虫为害棉的花蕾、青铃;
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heliothis armigera NPV：棉铃虫核型多角体病毒
47 蜡质芽孢杆菌/ bacillus cereus | 48 棉铃虫核型多角体病毒/ heliothis armigera NPV | 49 木霉菌/ trichoderma SP