共查询到19条相似文献,搜索用时 78 毫秒
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安徽大麻害虫名录及主要害虫综合防治 总被引:3,自引:0,他引:3
安徽大麻产区有大麻害虫42种,分属10目25科。其主要的有大麻小象甲、大麻跳甲、大麻叶蜂、大麻食心虫、大麻天牛、玉米螟和黑绒金色龟子等7种,并对其生物学特性及其综合防治方法和了描述。 相似文献
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对十字花科蔬菜害虫主要天敌及其寄主进行调查研究,并分类统计。结果表明:十字花科蔬菜害虫病原微生物8种,其中细菌2种、真菌5种、病毒1种;天敌昆虫42种,包括寄生性天敌昆虫25种和捕食性天敌昆虫17种;其他食虫动物天敌7种,其中蛛形纲蜘蛛目5种、鸟纲雀形目2种。 相似文献
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Ezra Jonathan Donahaye 《Crop Protection》2000,19(8-10):571-576
There is an increasing dichotomy between the demands of the first world for quality food uncontaminated by insecticidal residues, and the desperate need of third-world populations to maintain and protect their harvested grain from the deprivations of insects, so as to maintain a minimum level of food security. Fumigation is widely regarded as a non-residual treatment and fumigation with phosphine will continue for the immediate future as the mainstay against insect infestation. However, to ensure its continued use, insect resistance to phosphine must be countered by more efficient application techniques. Already, available alternative control technologies such as hermetic storage and the use of controlled atmospheres using either nitrogen or carbon dioxide also rely heavily on well-sealed storage structures, that are rarely available in rigid silos, but easily obtainable with flexible plastic liners. Aeration systems to cool grain bulks and thereby prevent insect development, are being widely used even in warm climates but are only applicable for bulk grain. Other non-residual treatments such as mechanical impaction, irradiation, biological control or heating, are suitable for high-quality commodities or niche situations. 相似文献
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该文阐述了茶园病虫害的发生特点与防治现状,提出了采用农业综合防治、物理防治、生物防治、化学防治等绿色防控相关措施. 相似文献
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Results from three field trials and a screenhouse study conducted in 1985 and 1986 using carbosulfan (Marshal 25 ST) insecticide dust formulation at 0, 10, 20, 30 and 40 g/kg cowpea seed indicated that infestation and/or damage by aphids, foliage beetles and leafhoppers was satisfactorily reduced with treatment levels above 20 g carbosulfan/kg seed. The period of activity of the different treatments ranged from 15 to 23 days for various pests in the screenhouse, and slightly longer in field trials. Post-flowering pests were, however, not controlled at any of the rates tested. The ease of application and high dermal LD50 (> 2000 mg/kg rabbit) make Marshal 25 ST a very attractive option for use by small-scale farmers as a component of an integrated pest management strategy in locations where these pests are important and adequate levels of genetic resistance are not available. 相似文献
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茶树害虫防治的新途径--化学生态防治 总被引:7,自引:0,他引:7
本文介绍了应用化学生态学原理进行茶树害虫防治的目前进展和发展前景。重点介绍了应用昆虫性信息素和茶树挥发性互利素在害虫防治中的应用。在昆虫性信息素的应用上,主要利用人工模拟的雌性害虫的性信息素来引诱同种害虫的雄性害虫以达到预测和迷向防治的目的。在茶树挥发性互利素的应用上,当害虫危害茶树后,害虫的口腔分泌物中的酶类会由叶片的伤口进入茶树组织内而使茶树体内代谢途径发生变化,形成新的挥发性化合物。这种新的挥发性化合物对这些害虫的天敌有很强的引诱作用,而对害虫却没有或只有很弱的引诱活性,通过这类化合物可以使天敌很容易找到它扑食或寄生的害虫的位置,为天敌寻觅到害虫提供了线索,同时为被害的茶树提供了保护.应用化学生态学进行害虫的防治尽管还没有在生产上达到应用的程度,但前景辉煌。 相似文献