共查询到20条相似文献，搜索用时 508 毫秒
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2006年对永安市区行道树天竺桂上的日本龟蜡蚧采用树干基部注射及叶面喷雾防治试验,结果表明:注射防治法效果较差,不宜使用;而喷雾法4种可湿性粉剂均有较好效果,防治效果达75.6%~93.3%之间。从防治效果与成本两方面考虑,防治时应优先选用杀灭2 000倍液、删虫1 000倍液,其次是利克虱1 000倍液,最后是欧贝1 000倍液。防治时机应掌握在初孵若虫期进行。 相似文献
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利用无公害药剂防治柳毒蛾试验研究 总被引：2，自引：0，他引：2
利用生物制剂森得保可湿性粉剂树冠喷雾防治柳毒蛾幼虫,不污染环境,效果较明显.喷药后72小时,2000倍液、3000倍液、4000倍液三种不同浓度处理死亡率分别达98.3%、95%、92%.从经济有效角度考虑,生产中可应用推广森得保可湿性粉剂3000倍液防治. 相似文献
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4种药剂对侧柏叶枯病的防治试验 总被引：1，自引：0，他引：1
《内蒙古林业调查设计》2017,(2)
侧柏叶枯病是侧柏的一种重要叶部病害。为筛选出对侧柏叶枯病防治效果较好的杀菌剂,试验选择了多菌灵、百菌清、灭病威、苯醚·甲硫4种杀菌剂对侧柏叶枯病进行了防治试验。50%苯醚·甲硫悬浮剂对侧柏叶枯病的防治效果最好,40%灭病威悬浮剂对侧柏叶枯病的防治效果次之,50%多菌灵可湿性粉剂对侧柏叶枯病的防治效果低于40%灭病威悬浮剂,50%百菌清悬浮剂对侧柏叶枯病的防治效果最低。由试验结果推荐在生产实践中使用50%苯醚·甲硫悬浮剂以1000~1500倍液及40%灭病威悬浮剂以500~1000倍液,在侧柏叶枯病发病初期进行药剂喷雾防治。 相似文献
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赤峰市阿鲁科尔沁旗桑褶翅尺蛾的发生与防治 总被引：1，自引：1，他引：0
《内蒙古林业调查设计》2016,(3):95-96
赤峰市阿鲁科尔沁旗山杏Armeniaca sibirica林遭受桑褶翅尺蛾Zamacra excavata幼虫的严重危害。该虫大发生时,以植物源农药3.6%烟碱·苦参碱进行化学防治时,使用原药375 ml/hm~2飞机超低量喷雾,防治效果达90.0%,以1000倍液采用背负式喷雾喷粉机防治,防治效果达79.5%,以1000倍液采用车载式低容量风送喷雾机防治,防治效果达86.8%。 相似文献
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猕猴桃黑斑病病原菌寄生于猕猴桃枝、叶及果实上，呈黑色斑块。人工培养以猕猴桃叶汁加维生素C培养基为最佳。该病原菌在猕猴桃的枝、叶上越冬，翌年5月上旬为初侵染，7—8月为发病高峰期，海沃特为抗病品种。感病区内，采用清除病害枝叶，结合托布津800倍液喷雾防治，效果最好。 相似文献
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To determine whether the brown root rot disease caused by Phellinus noxius is present in the Amami islands, which are situated near Okinawa, we conducted six field surveys from 1999 to 2005. The brown root rot disease was found in 22 tree species in 17 plant families at 25 different sites in all the islands surveyed. Sixteen of these species were newly recorded as host plants of P. noxius. The disease was more common in the low elevation plains and on hills less than 100 m above sea level than in mountainous areas. This is the first report of the brown root rot disease caused by P. noxius in the Amami Islands, Japan, and Ohshima Island is currently the northern‐most distribution point of the disease in the northern hemisphere. 相似文献
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桃的采收成熟度与果实的耐藏性有较密切的关系。在７～８成熟时的绿熟期采收,经贮藏后果面新鲜,果实硬而脆,褐变和腐烂少;采收过晚则果实易软化,容易褐变和腐烂。采前１个月用１００ｍｇ／ｋｇＧＡ３处理有利于提高桃果实的耐藏性,贮藏后处理果的硬度比对照高１倍;采前１～２ｄ用５００ｍｇ／ｋｇ朴海因处理大久保、京玉和燕红桃,贮藏好果率分别增加２２．８％,２２．９％和１８．３％;采前用混合液（ＧＡ３５０ｍｇ／ｋｇ,２,４－Ｄ５０ｍｇ／ｋｇ,多菌灵２０００倍）处理可减慢桃果实在贮藏期间的生理代谢,并能较好地保持品质,腐烂和褐变指数分别比对照降低７．７％和４．０％。 相似文献
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铜-季铵盐复配木材防腐剂的防腐性能 总被引：7，自引：1，他引：7
在实验室内采用常规的真空－加压法浸注试件，土壤木块法进行防腐试验，检验了铜－季铵盐类防腐剂（FFJ－1、FFJ－2和FFJ－3）对白腐采绒革盖菌[Coriolus versicolor(L.ex Fr.)Quel.]和褐腐绵腐卧孔菌[Poria placenta(Fr.)Cooke.]的防腐性能，结果表明：在较低的保持量下，都有较好的防腐效果。与百菌清（可湿性粉剂）、五氯酚钠、三唑酮相比较，它们对白腐菌的防腐性能与百菌清相近，批五氯酚钠和三唑酮好。 相似文献
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The fungus Phellinus noxius has a broad host range and causes brown root rot in a variety of tree species of various ages, irrespective of their original health. The fungus is widely distributed in tropical countries of Southeast Asia, the Pacific Islands and Australia, Central America and Caribbean, and Africa. Since 1988, when brown root rot was first found on Ishigaki Island, Okinawa Prefecture, the disease has been reported on several islands in Okinawa and Kagoshima Prefectures, and it has been causing serious problems to shade, windbreak, ornamental and landscape trees in the Ryukyu Islands, located in the subtropical region of southern Japan. Here, we report on the current status of P. noxius‐caused brown root rot in the Ryukyu Islands, Japan, including symptoms, occurrence, dispersal, distribution and host tree species of the disease, pathogenicity and/or virulence of the pathogen, and disease management based on our surveys and previously published reports from Japan. Brown root rot has been confirmed in 53 tree species from 32 plant families at different sites on 10 of the 12 islands surveyed. Among the 53 tree species, 34 were first recorded in Japan as host plants of P. noxius. The disease occurs mainly in shade, ornamental and windbreak trees at sightseeing places, parks, roadsides, agricultural land such as sugar cane fields, and around residences or other places associated with human activities. 相似文献
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《Wood material science & engineering》2013,8(2):101-106
Abstract The effect of heat treatment on decay resistance of white birch was evaluated for different incubation periods ranging from 2 to 12 weeks using three species of brown rot and one species of white rot fungus. The results of weight loss tests showed that the white rot fungus, Trametes versicolor, effectively degraded the untreated wood (73.5%). While the degradation of untreated wood by brown rot fungi species, Gloephyllum trabeum (11.6%) and Conifora puteana (6.2%), was considerably less compared to T. versicolor, the third brown rot fungi studied, Poria placenta, caused an appreciable degradation of the same species (52.4%). The results clearly showed that the heat treatment reduced the effect of fungi attack on white birch. Increasing the heat treatment temperature from 195 to 215°C resulted in reduction of weight loss, consequently, reduction in fungal attack. As an example, the weight loss reductions due to T. versicolor, P. placenta, G. trabeum and C. puteana attack was 62.2%, 71.3%, 89.6% and 100%, respectively, compared to the weight loss of untreated wood when it is heat treated at 215°C. Thus, these results confirmed that the heat treatment increased the biological resistance of white birch. 相似文献
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Acacia mangium is a fast‐growing tree species. It is mainly planted in large monocultures for pulpwood in South‐East Asia. Root rot has become the most economically damaging disease of this species with high tree mortality rates observed during second and third rotations. Two main types of root rots have been found in A. mangium, viz. brown root‐rot and red‐root disease caused by Phellinus spp. and Ganoderma spp., respectively. To assess the future management options for root rot of A. mangium, we review past and current disease‐management strategies for root rot in different temperate and tropical industrial tree crops. The efficacies of a wide range of silvicultural, chemical and biological options are detailed, and their potential utilization in managing root rot of A. mangium is discussed. We conclude that the current gaps in knowledge regarding identification, biology and disease epidemiology of the root‐rot pathogens will need to be addressed so that effective management options can be developed. 相似文献