搜索结果: 46-60 共查到“知识库 森林病理学”相关记录99条 . 查询时间(0.5 秒)
Effect of fertilisation on Norway spruce needles
air pollution impact defoliation spruce yellowing
2015/1/29
Yellowing of Norway spruce is a relatively common problem in many regions of the Czech Republic. At some places, it is also connected with forest decline. This unfavourable phenomenon is initiated by ...
Dieback of Austrian pine – the epidemic occurrence of Sphaeropsis sapinea in southern Moravia
Sphaeropsis sapinea dieback Pinus nigra
2015/1/29
In the course of recent years, various cases of Austrian pine dieback of all age classes have occurred in a number of localities. At all localities, Sphaeropsis shoot – killing of pine caused by Sphae...
Induced wound response of Norway spruce Picea abies P. Karst. after artificial inoculation by imagoes of Ips typographus
ophiostomoid fungi pathogens vascular tissues
2015/1/29
Inoculation experiments were carried out on a set of trees with imagoes of Ips typographus L. which origin from the Šumava Mts. and the Křtiny Training Enterprise. The objective of back inoc...
Beech bark necrotic disease (Fagus sylvatica L.) of tracheomycotic type in Central and South-eastern Europe
beech bark necrotic disease Central and South-eastern Europe Fagus sylvatica L.
2015/5/6
The authors present results of long term monitoring of beech stems bark necrotic disease of maternal stand in Czech Republic, Slovakia, Poland, Hungary, Romania, Serbia and Bulgaria. Overall, 10,863 b...
SEROEPIDEMIOLOGICAL STUDY OF LYME BORRELIOSIS AMONG FORESTRY WORKERS IN SOUTHERN POLAND
borreliosis serology ELISA forestry workers
2010/12/22
Forestry workers are a professional group particularly exposed to tick-borne infections; however, continuous monitoring of anti-Borrelia burgdorferi antibodies in this group enables faster diagnosis a...
British Columbia抯 Forests White Pine Blister Rust Forest Health Stand Establishment Decision Aid
Cronartium ribicolaforest health forest management pine stem rust management Ribes spp white pine blister rust
2010/8/31
White pine blister rust (Cronartium ribicola) is an introduced disease affecting five-needle pines throughout North America. Like other non-native pests, its impact on the native hosts has been dramat...
壬酸对华山松木蠹象成虫的拒食作用研究
拒食作用 华山松木蠹象 壬酸
2009/12/14
壬酸对华山松木蠹象成虫有明显的拒食作用。在选择性拒食作用和完全拒食作用中，当浓度为4×104 mg/L时的拒食效果在24和48 h中都是最好的。选择性拒食作用中，24和48 h的AFC50分别为3.24×102 mg/L和5.68 mg/L；完全拒食作用中，24和48 h的AFC50分别为9.98×103和2.89×104 mg/L。
从进境木包装中截获的栉角窃蠹
栉角窃蠹 生物学特性 形态特征
2009/11/25
介绍了从进境木包装中截获的栉角窃蠹的分布、危害、形态特征等，以便今后在检疫过程中引起重视，防止该虫的入侵和扩散。
黄连木种子小蜂防治技术研究
黄连木种子小蜂 防治技术 药剂
2009/11/12
［目的］ 为防治黄连木种子小蜂筛选出方便、高效的方法。［方法］ 以36%啶虫脒、10%吡虫啉和48%乐斯本为供试药剂，分别采用灌根法、注干法和喷雾法施药，通过比较其防治效果筛选出黄连木种子小蜂的最佳防治方法。［结果］ 在3种施药方法中，注干法的防治效果最佳，其平均虫果率为17.47%；喷雾法的防治效果次之，其平均虫果率为33.24%；灌根法的防治效果最差，其平均虫果率为41.44%。注干法的平均虫...
麻疯树白粉病的病原鉴定及药剂防治研究
麻疯树白粉病 病原鉴定 防效
2009/12/23
［目的］为控制基地麻疯树白粉病的流行提供科学依据。［方法］通过制片镜检对云南省元阳县膏桐良种繁育基地的麻疯树白粉病进行病原鉴定。［结果］麻疯树白粉病病原为白尘粉孢（Oidium leucoconium Desm）。初选了1个杀菌剂组合进行田间药效试验，初步结果表明，该药剂组合能促进植株正常生长发育，防治麻疯树白粉病效果明显，在病害发展较快时，间隔7 d连续施药2次，防效高达853%；药剂处理...
棕榈红棕象甲生物学特性研究
棕榈 红棕象甲 生物学特性 发育历期
2009/12/28
［目的］研究棕榈红棕象甲(Rhynhophorus ferrugineus Fabricius)的生物学特性。［方法］采用室内饲养观察与室外调查相结合的方法。［结果］棕榈红棕象甲在广西南宁市1年发生3代，以老熟幼虫、蛹、成虫在寄主植物组织内越冬。成虫对频振式诱虫灯、黄色光灯具有较强的趋性；卵散产，多产于寄主幼嫩叶鞘组织内；室内常温条件下，平均每雌虫产卵量为（370.6±0.8）粒；在26 ℃恒...
A Strategy for Controlling Pine Wilt Disease and Its Application On-site
control measures control operations feasible and practical solution pine wilt disease PWD management strategy
2009/8/28
The severe epidemic of pine wilt disease (PWD) in Japan is caused by the pinewood nematode, Bursaphelenchus xylophilus, an alien pest allied with the endemic vector insect, Monochamus alternatus, orig...
Diversity of Pathogenicity and Virulence in the Pinewood Nematode,Bursaphelenchus xylophilus
Bursaphelenchus xylophilus pathogenic differentiation pine wilt disease resistance virulence
2009/8/28
The pathogenicity of Bursaphelenchus xylophilus, a pathogen of pine wilt disease, to conifers mainly Pinus, was reviewed, and the differentiation of its pathogenicity and intraspecific variation of vi...
Histological Analysis for Mechanism of Pine Wilt Disease
bordered pits resin canals resistance tracheids xylem parenchyma cells
2009/8/28
Host pine trees infected with pine wilt disease show various histological responses. The pathogenic pinewood nematodes (Bursaphelenchus xylophilus) migrate through the resin canals in cortex and xylem...
Perspectives for the Studies of Pine Wilt Disease in the 21st Century
Perspectives Studies Pine Wilt Disease
2009/8/28
Perspectives for the Studies of Pine Wilt Disease in the 21st Century.