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柑桔白粉虱已成为危害柑桔生产的主要害虫。Citrus whitefly has been a major pest in citrus production.
粉虱蜜露是粉虱寄生性天敌搜索寄主的主要利它素源。Whitefly honeydew is an important kairomone resource for host-searching of parasitoids.
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超微形态特征为粉虱种群鉴定提供了可靠的理论参考。The ultra-morphological characteristics provided dependable reference to taxonomy for whitefly.
其抗药性增强,化学防治难以奏效。Chemical control became more difficult on account of increasing insecticide resistance of whitefly.
对烟粉虱若虫在223份不同结荚习性大豆品种植株上的分布进行了调查研究。The distribution of whitefly nymph on the plants of 223 summer soybean varieties was in vestigaled.
利用虫生真菌及其代谢产物进行防治是未来粉虱害虫防治的主要途径。Using of entomogenous fungus will be one of the most important ways to control of the whitefly in the future.
因此,非形态特征的应用在粉虱分类中有一定的特殊价值。Therefore, it is of significance, to some extent, to apply non morphological characteristics in whitefly taxonomy.
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双生病毒可对烟粉虱的发育、存活和生殖产生不利或有利的影响。Geminiviruses may have favourable or unfavourable effects on the development, survival and reproduction of the whitefly.
烟粉虱的寿命及繁殖力在单独施用磷肥的黄瓜植株上低于对照处理的植株,在其他施肥处理上均高于对照。Whitefly longevity and fecundity are the shortest and the lowest on treated cucumber plants with only phosphorus fertilizer.
该结果表明了烟粉虱钠离子通道L925I突变与对拟除虫菊酯抗性密切相关。Our results indicated that L925I mutation was tightly associated with pyrethroid resistance in the tobacco whitefly from Nanjing.
粉虱类害虫在保护地和大田园林作物上发生日益猖獗,造成严重的经济损失。Whitefly occurred more rampant increasingly in greenhouses and fields horticulture crops at caused more serious economical expense.
本文综述了近几年国内外有关虫生真菌在控制粉虱类害虫中的应用研究。This paper is intending to introduce the lastest research development and achievement in biocontrol of whitefly with entomogenous fungus.
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黄瓜霜霉病、番茄灰霉病和温室白粉虱等是保护地蔬菜栽培中主要发生的病虫害,具有危害损失大和防治难的特点。In order to control the emergence, and reduce danger, biological behaviour and control measurement to the greenhouse whitefly are discussed in this paper.
这些卵变成幼瓢虫之后就是园丁们最好的朋友之一了,它们是凶猛的食肉动物,尤其针对粉虱与红蜘蛛。These eggs turn into ladybird larvae, which are among the biggest friends we gardeners have. They're ferocious predators on problem whitefly and red spider mite.
结果表明,烟粉虱成虫取食和产卵对黄瓜品种有一定选择性。The selection tests on 10 domestic or overseas cucumber strains demonstrated that the tobacco whitefly showed different feeding and egg-laying behaviors to different cucumber strains.
在大型全自动玻璃温室内,围绕规模化繁殖烟粉虱的各个环节,开展了烟草品种、植株生育期、烟粉虱在烟草植株上产卵分布规律和接种粉虱时间等方面的研究。Focusing on every factor of whitefly mass reproduction, tobacco varieties, growth stage, distributions of whitefly eggs, inoculation time and so on were studied in large automatic greenhouses.
据此推测,两种粉虱对温度逆境适应性的差异是导致其种群发生存在差异的一个重要原因。It is inferred that the difference of adaptability to adverse temperature may be one important mechanism that leads to interspecific differentiation in dynamics of the two whitefly species in China.
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结果表明,不同药剂对不同虫态的螺旋粉虱的防效存在显著差异,而啶虫脒、灭多威和高效氯氰菊酯对成虫和若虫均有理想防效。The results indicated that the effects of all insecticides on control spiraling whitefly was significantly different. Acetamiprid, methomyl and beta-cypermethrin were more effective against the pest.