共查询到18条相似文献,搜索用时 62 毫秒
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本文按照FAO国际植物检疫措施标准——检疫性有害生物风险分析(ISPM No.11),结合进口植物及植物产品有害生物风险分析实用方法,以有害生物为起点,对木薯绵粉蚧Phenacoccus manihoti Matile-Ferrero,1977随输华寄主产品传入开展风险评估。风险评估结果表明,木薯绵粉蚧随木薯产品进入可能性低,定殖可能性中,扩散可能性高,后果评估结果高,将每个阶段的风险结果进行矩阵合并,总体风险为中。根据风险等级,提出了风险管理方案,将风险降低到可接受水平,对贸易的影响最小。本文对本风险分析方法和下一步应重点明确问题进行了简单讨论。 相似文献
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在花椒绵粉蚧发生严重的花椒林地进行药效防治试验的结果显示:①在供试的6种药荆中,10%吡虫啉WP效果最好,其次是45%石硫合剂结晶粉、4.5%高效氯氰菊酯EC、20%灭多威EC;②各种药剂低、中、高3种浓度间差异不显著,在防治中只要应用时间得当,喷雾均匀,用稀释倍数较大的浓度也会取得较理想的防治效果;③两次喷雾处理效果极显著好于1次喷雾. 相似文献
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2010年至2012年,对西宁地区白蜡树主要害虫蜡绵粉蚧Phenacoccus fraxinus Tang寄生蜂进行了初步研究,结果显示:最主要的寄生蜂优势种为绵粉蚧长索跳小蜂Anagyrus schoenherri(Westwood),寄生率最高达86.55%,羽化高峰期在6月30日左右,雌雄性比为♀:♂=2.23∶1(69∶31);单个寄主寄生数量最低1头,最高11头,平均3.0头。成峰寿命为2-3 d,补充营养后可达到3-15 d。蛹和成虫出现的高峰期分别为为5月29日和6月30日。与寄主若虫盛发期(6月底7月初)完全吻合。 相似文献
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为建立扶桑绵粉蚧溴甲烷熏蒸处理方法,本文测定了溴甲烷熏蒸2h对扶桑绵粉蚧各虫龄的致死毒力。用机率值分析表明:各虫龄对溴甲烷敏感性不同,以1龄若虫对药剂最敏感,以3龄若虫耐药性最强;在20℃和29.5℃下3龄若虫达到99%死亡率所需CT值分别为44.09 g.h/m3和29.77 g.h/m3,其对应的LC99分别为28.09 g/m3和18.10 g/m3。验证实验表明在21~25℃下以剂量38g/m3,在26~30℃下以剂量25 g/m3熏蒸2h各供试虫龄死亡率均达到100%,该指标可为扶桑绵粉蚧安全检疫处理提供参考。 相似文献
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热水处理对扶桑棉粉蚧的致死作用 总被引:1,自引:0,他引:1
本文研究了热水处理对扶桑绵粉蚧的杀灭作用,结果表明,在49℃、50℃、51℃、52℃和53℃时扶桑绵粉蚧1龄若虫死亡率达到100%的处理时间分别为240min、150min、60min、40min和6min。分析显示,热水温度和处理时间长度的复合作用导致了扶桑绵粉蚧的死亡。建立了热水温度(X1)、处理时间(X2)和扶桑棉粉蚧死亡率(Y)之间的模型方程为Y=-9.466+0.192X1-0.0000240X22+0.000218X1X2。给出了不同温度热水处理时扶桑绵粉蚧100%死亡的时间长度。 相似文献
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Emerging pests and diseases of South‐east Asian cassava: a comprehensive evaluation of geographic priorities,management options and research needs 下载免费PDF全文
Ignazio Graziosi Nami Minato Elizabeth Alvarez Dung Tien Ngo Trinh Xuan Hoat Tin Maung Aye Juan Manuel Pardo Prapit Wongtiem Kris AG Wyckhuys 《Pest management science》2016,72(6):1071-1089
Cassava is a major staple, bio‐energy and industrial crop in many parts of the developing world. In Southeast Asia, cassava is grown on >4 million ha by nearly 8 million (small‐scale) farming households, under (climatic, biophysical) conditions that often prove unsuitable for many other crops. While SE Asian cassava has been virtually free of phytosanitary constraints for most of its history, a complex of invasive arthropod pests and plant diseases has recently come to affect local crops. We describe results from a region‐wide monitoring effort in the 2014 dry season, covering 429 fields across five countries. We present geographic distribution and field‐level incidence of the most prominent pest and disease invaders, introduce readily‐available management options and research needs. Monitoring work reveals that several exotic mealybug and (red) mite species have effectively colonised SE Asia's main cassava‐growing areas, occurring in respectively 70% and 54% of fields, at average field‐level incidence of 27 ± 2% and 16 ± 2%. Cassava witches broom (CWB), a systemic phytoplasma disease, was reported from 64% of plots, at incidence levels of 32 ± 2%. Although all main pests and diseases are non‐natives, we hypothesise that accelerating intensification of cropping systems, increased climate change and variability, and deficient crop husbandry are aggravating both organism activity and crop susceptibility. Future efforts need to consolidate local capacity to tackle current (and future) pest invaders, boost detection capacity, devise locally‐appropriate integrated pest management (IPM) tactics, and transfer key concepts and technologies to SE Asia's cassava growers. Urgent action is needed to mobilise regional as well as international scientific support, to effectively tackle this phytosanitary emergency and thus safeguard the sustainability and profitability of one of Asia's key agricultural commodities. © 2016 Society of Chemical Industry 相似文献
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Cross‐resistance,the stability of acetamiprid resistance and its effect on the biological parameters of cotton mealybug,Phenacoccus solenopsis (Homoptera: Pseudococcidae), in Pakistan 下载免费PDF全文
Muhammad Babar Shahzad Afzal Sarfraz Ali Shad Naeem Abbas Mahmood Ayyaz William B Walker 《Pest management science》2015,71(1):151-158
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Yair Ben-Dov 《Phytoparasitica》2005,33(1):15-16
The Solanum mealybug,Phenacoccus solani Ferris (Hemiptera: Coccoidea: Pseudococcidae), is newly recorded from Israel, where it was found on the Coastal Plain and
in the Arava Valley, on plants belonging to the families Amaryllidaceae, Compositae and Solanaceae.
http://www.phytoparasitica.org posting Nov. 25, 2004. 相似文献
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Abstract A less labour‐intensive method for mass rearing of Orseolia oryzivora H. &; G. is described. This technique uses a mist chamber system that needs minimal supervision. The complete life cycle of O. oryzivora lasts from 26 to 36 days with a sex ratio of one male to two females. When 23–27 females were released per cage, 100% of the rice plants developed silver shoots. In varietal screenings, three to seven females can be released per cage, resulting in 85–90% infestation of the susceptible cultivars. 相似文献
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为明确在浙江省是否有扶桑绵粉蚧的分布及其危害情况,在全省范围内对高风险地带开展全面调查.结果显示,在浙江省杭州、金华和丽水地区的9个县市区发现有扶桑绵粉蚧,发生面积11.09 hm2,查到扶桑绵粉蚧的寄主植物33科66种,扶桑绵粉蚧嗜好菊科、葫芦科、茄科、锦葵科、马齿苋科、胡麻科、马鞭草科、报春花科和石蒜科植物,以芝麻、南瓜、茄子、栝楼、枸杞、大花马齿苋、马缨丹、胭脂花、菊花、朱顶红、棉花、木槿、苍耳、小白酒草和苦荬菜受害最严重.上述结果表明,扶桑绵粉蚧在浙江局部地区已有分布,虽然目前分布面积不大,但必须警惕其进一步扩散蔓延. 相似文献
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本文对扶桑绵粉蚧Phenacoccus solenopsis在不同水生蔬菜上的适合度进行研究,以期为分析该害虫对我国水生蔬菜生产的潜在危害及综合防治提供理论依据。在室内用水芹Oenanthe javanica、慈姑Sagittaria trifolia、芋头Colocasia esculenta和莲藕Nelumbo nucifera 4种寄主植物叶片饲喂扶桑绵粉蚧,考察该虫各龄若虫的发育历期、存活率、成虫寿命及产卵量。以水芹为寄主扶桑绵粉蚧若虫的发育历期最短,为(26.67±0.64)d;以莲藕为寄主,若虫的存活率及成虫的产卵量均为最低,分别为(55.56±1.92)%和(116.95±24.73)粒;以芋头为寄主,雌成虫的寿命最短,仅为(12.60±6.43)d。扶桑绵粉蚧在4种水生蔬菜寄主上的内禀增长率的高低顺序依次为水芹>慈姑>芋头>莲藕。扶桑绵粉蚧在4种水生蔬菜寄主上的适合度不同,其中,水芹最适合扶桑绵粉蚧的生长发育和繁殖。 相似文献