共查询到20条相似文献，搜索用时 468 毫秒
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苏云金杆菌防治双条杉天牛试验简报 总被引：5，自引：1，他引：4
双条杉天牛Semanotus bifasciatus(Motschulsky)是危害侧柏、圆柏等的主要蛀干害虫,在北京地区被害株率为13％以上。过去多用薰蒸法防治,费时费力,且对人畜有剧毒。从1989～1990年利用苏云金杆菌对其进行了防治试验,取得了良好的杀虫效果,现报道如下。 相似文献
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北京的两栖爬行动物研究 总被引：1，自引：0，他引：1
一、北京两栖爬行动物的区系组成北京的两栖爬行动物并不丰富,因为处于北方大陆性气候,冬季严寒干燥,两栖爬行动物都缺少保温结构和体温调节能力,均属变温动物。为了做好市科委下达《北京湿地生物多样性保护研究》课题,我们在北京地区进行了调查研究,记录到两栖动物5科,8种:爬行动物6科,20种。过去一些专家学者曾报道过的一些种类,我们多年来并没发现,如:无斑雨蛙、乌龟、北京石龙子等9种。另外,大鲵在北京地区曾数次被捕到,但一直未发现它的繁殖地。东方铃蟾只分布在香山、卧佛寺樱桃沟等地,有相当大的一个局部种群。在28种两栖爬行动物中… 相似文献
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Kayimbi Mendha Tubajika Jonh Jack Jonawiak Ronald Mack Kelli Hoover 《Journal of Wood Science》2007,53(3):258-263
The effectiveness of radio frequency (RF) treatment in the control of wood decay fungi (Gloeophyllum trabeum, Ganoderma lucidum, and Irpex lacteus) and sapstain fungus (Ceratocystis fimbriata) in red oak (Quercus spp.), poplar (Populus alba), and southern yellow pine (Pinus spp.) was evaluated in the laboratory as an alternative to methyl bromide (MB) treatment. Wood samples (15.5 x 10 x 10 cm)
were inoculated with fungi from a 7-day culture by dipping them to a depth of one face deep (2 cm) into inoculum and incubating
them at 25°C for 14 days. Identical wood samples were left uninoculated as controls. Subsequent to incubation, the wood blocks
were exposed to RF radiation in an industrial 40-kW dielectric oven at temperatures between 60° and 70°C for 2 min. The test
fungi were recovered and reisolated from all of the control wood blocks but not from RF-treated wood blocks. RF treatment
resulted in complete inhibition of the fungus in 98%-100% of the wood samples. Moisture content loss (≥1%) was noted after
wood had been exposed to RF treatment. Moisture content may be an important factor to consider with RF treatments. RF treatment
can, therefore, potentially provide an effective and rapid quarantine treatment as an alternative to MB fumigation for certain
pathogen-wood combinations.
This article reports the results of research only. Mention of a product does not constitute an endorsement or recommendation
by USDA for its use. 相似文献
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木腐菌木质素分解酶活力的初步研究 总被引：1，自引：0，他引：1
本文对８种木腐菌，１３株菌株的木质素分解酶活力进行了初步研究，结果表明：１３株木腐菌菌株都具有程度不同的木质素分解酶活力，其中白腐菌的木质素分解酶活力高于褐腐菌，酶活力增长速度较快，高酶活力维持时间长。这些结果对于木材防腐研究及白腐菌综合利用的研究具有一定的参考价值。 相似文献
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湖北省大型真菌生物多样性及资源开发利用 总被引：2，自引：0，他引：2
笔者主要概述了湖北省大型真菌的生物多样性,担子菌亚门真菌有331种,分属于4纲5目39科96属,子囊菌亚门真菌43种,分属于2纲7科19属。简要概述了湖北省真菌资源的保护和开发利用现状,并对进一步研究、保护及开发利用提出了合理化建议。 相似文献
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从我国云南、广州、北京、湖南和安徽等省市采集变色霉变竹材标本,分离纯化得到78株真菌菌株,鉴定为木霉(Trichoderma spp.)、毛霉(Rhizomucor spp.)、曲霉(Aspergillu spp.)、镰刀菌(Fusarium spp.)、链格孢菌(Ahernariaspp.)、可可毛色二孢菌(Botryosphaeria rhodina)和稻球黑孢(Nigrospora oryzae)等.选取代表性的菌株进行生物学特性的研究.营养因子对菌株生长的影响研究表明:碳素营养和氮素营养均影响菌丝的生长及色素形成;温度条件对菌株的生长影响较大,对于大多数菌株而言,28℃是最适生长温度,5℃生长减缓甚至停滞,但未死亡,40℃以上菌株的生长受到抑制甚至死亡,但个别霉菌在50℃仍可生长,表明竹材霉菌对极端环境有一定的适应能力;竹材霉菌变色菌对酸碱度的适应范围较广,pH值在4～11下皆能正常生长,最适pH值在5～8间;光照对菌株生长的影响不大. 相似文献
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巴塘竹巴笼自然保护区是四川省的省级自然保护区，具有典型的干热河谷景观。此次报道了巴塘竹巴笼自然保护区部分地区大型真菌的初步调查结果，采用目前国内外普遍使用的Ainsworth（1973）的分类系统进行分类。采集到的这些真菌属于隶2个亚门，5纲，9目，26科，47属，91种；其中食用菌64种（不包括有人食用安然无恙，有人食用中毒的菌类）、毒菌14种（包括有人食用中毒的菌类）。药用菌6种（包括药用菌和抗癌菌，其中不包括兼有药用功效的菌类）、木腐菌14种、菌根菌36种、其他7种（包括不明成分和用途的一些种类）。巴塘竹巴笼自然保护区动植物资源比较丰富，有益的食用菌、药用菌及菌根真菌种类相对较多，菌物资源的开发与利用潜力较大。 相似文献
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Pablo Martín Pinto Juan Alberto Pajares Alonso Valentín Pando Fernández Julio Javier Díez Casero 《New Forests》2006,31(1):41-56
Fungal endophytes in container-grown seedlings in forest nurseries located in the North Plateau of Spain have been studied.
Influences of nursery, season (spring and autumn), host genus and plant part on those fungal assemblages have been also evaluated.
Four nurseries were sampled in spring and three in autumn. Analysed material consisted of stems, roots and rhizosphere from
five host species, Quercus ilex, Q. pyrenaica, Pinus pinea, P. nigra and P. sylvestris. A total of 581 isolates corresponding to 13 taxa were found in this study. Fusarium moniliforme, F. oxysporum and Trichoderma viride were the most frequently isolated fungi. Number of fungal species per observation differed significantly among the sampled
parts. Multivariate Correspondence Analysis allowed the discrimination of samples in five groups based on nursery, season,
host genus and plant part. Isolation frequencies of F. moniliforme and F. oxysporum were higher in the roots and in spring, whereas those of T. viride were higher in the rhizosphere and in autumn. A relationship was observed between presence of T. viride and absence of Fusarium spp. in forest nurseries. T. viride, could serve as a biological control agent against Fusarium spp. in forest nurseries. 相似文献