农学 >>> 植物保护学 >>> 植物检疫学 植物免疫学 植物病理学 植物药理学 农业昆虫学 植物病毒学 植物病虫害测报学 抗病虫害育种 有害生物化学防治 有害生物生物防治 有害生物综合防治 杂草防治 鸟兽、鼠害防治 植物保护学其他学科
搜索结果: 1-5 共查到知识库 植物保护学 prevalence相关记录5条 . 查询时间(0.031 秒)
Cross sectional study was conducted in Jabi Tehenan district of West Gojjam administrative zone from October 2008 to April 2009 to determine the current prevalence rate of bovine trypanosomosis. In th...
Geo-referenced surveys were conducted in 2001 and 2003 to assess the prevalence and severity of cassava bacterial blight (CBB) and cassava anthracnose disease (CAD) in different agro-ecological zone...
A total of 1,367 Ixodes ricinus ticks collected from 5 districts of the Lublin region (eastern Poland) were examined for the presence of Babesia microti DNA by PCR and nested-PCR. As many as 74 ticks ...
Sera of 500 inhabitants of north-eastern Poland, 450 suspected for Lyme borreliosis and 50 blood donors (control group), were analysed for the presence of IgG antibodies against Anaplasma phagocytophi...
In 1996-1998, a total of 2285 Ixodes ricinus ticks (1063 nymphs, 637 males,585 females) were collected from vegetation from 25 different localities in the 8 Polish provinces throughout the country.

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...