武鸣县木薯朱砂叶螨发生规律初探

2009～2010年,在广西区武鸣县开展不同木薯品种、不同栽培方式、不同间套种作物的朱砂叶螨（红蜘蛛）发生规律研究。结果表明：木薯朱砂叶螨有2个发生高峰期,第1次高峰期在7～8月份,第2次高峰期在11月份;耐朱砂叶螨危害的木薯品种是华南8号;起畦覆盖地膜和间套种短期作物,可减轻木薯上朱砂叶螨的危害。     

贵州蔗区金龟子虫害盛发原因分析及防治

通过对贵州蔗区受灾蔗田金龟子危害现状调查,结合文献资料对金龟子形态特征、生活习性及危害特点进行了介绍,详细分析了金龟子对贵州甘蔗生产危害逐年加重的原因,同时结合生产实际提出了相应的综合防治措施。     

New detection of Cyprinid herpesvirus 2 associated with mass mortality in colour crucian carp (Carassius auratus), in China

During October 2016, a mass mortality of colour crucian carp (Carassius auratus), which the affected fish were lethargic, inappetence and anoxic, was occurred in a fish farm located in Chengdu, Sichuan province, China. To elucidate the aetiology of this outbreak, histological and electron microscope examination, molecular investigation were conducted. Pathologic examination revealed multi foci necrosis on haematopoietic organs, gills, hearts and pancreas. Transmission electron microscopy observations exhibited sphere herpesvirus‐like particles distributed amongst the tissues of gill, spleen and kidney. Molecular analysis is verified that the causative agent of this outbreak was Cyprinid herpesvirus 2 (CyHV‐2). This report first report CyHV‐2 in colour crucian carp, which increases the concern about damage of CyHV‐2 and its potential role in species.     

2016年常熟市小麦赤霉病流行原因与防治对策

2016年江苏省常熟市小麦赤霉病大流行，其流行因子主要包括菌源积累、适宜气候、生育期不平衡、药剂抗性等，并有针对性地提出了强化测报技术、推广综防措施、推进专业化防治、药种抗性监测等防治措施。     

湖北入境大豆的疫情分析与建议

近年来湖北口岸入境的大豆数量逐年增加,2011年至2014年6月,湖北口岸入境大豆约18.8万t,主要来自美国、阿根廷和巴西。根据实验室大豆疫情的统计数据来看,杂草的种类和数量最多,检出的杂草种子共20科、111种,禾本科种类最多,达到31种,其次是豆科14种、菊科11种、蓼科11种。多批次检出检疫性杂草有苍耳(属)(非中国种)、假苍耳、假高粱、黑高粱、蒺藜草(属)(非中国种)、豚草(属)、美丽猪屎豆等。昆虫共检出6种,均为仓储性害虫,其中2批次检出四纹豆象。病原真菌共检出11种。本研究对湖北口岸入境大豆的疫情进行了分类分析,并提出相应的建议,以降低有害生物的传入。     

青海云杉种实害虫发生危害研究

青海云杉种实害虫的主要种类为云杉球果小卷蛾,主要发生于天然林及母树木,虫害株率高达100%.-般低海拔林分重于高海拔林分,老母树林重于新母树林,纯林、疏林重于混交林和郁闭林分,远离天然林的种子园没有种实害虫的发生.在同一坡面上,随坡位升高虫害减轻,平缓林分重于陡坡林分,不同坡向间差异不明显;干燥林分重于湿润林分.平均单果虫口密度3头左右时,虫害果较健康果相比,出种率下降2.5%,健饱种数下降18.3%,虫蛀种子率达16.2%,千粒重下降0.93g,发芽率降低28%.     

近年来葡萄白腐病重发原因及其防治对策

对福建省上杭县近年来葡萄白腐病重发原因进行了全面调查分析,提出了防治对策。选用4种农药进行了防效试验,结果表明:福星EC、50%丙环唑ME 7500倍液喷雾防效佳,连续喷药3次,第3次药后20 d防效均达100%。     

近年我国农业植物检疫疫情新发形势分析

植物检疫的目标是控制检疫性有害生物传入、扩散和蔓延。在我国现行的农业植物疫情报告管理制度中,疫情快报最能反映疫情新发情况。为了准确掌握我国农业植物疫情新发动态,本文系统整理了2010年-2018年全国农业植物疫情快报数据,从时间和空间两个维度分析了我国疫情发生的严峻形势,并分析了不同种类农业植物检疫性有害生物的发生动态,以期为我国农业植物疫情及农业植物检疫性有害生物的研究和管控提供参考依据。     

Molecular and phylogenetic analysis of the H5N1 avian influenza virus caused the first highly pathogenic avian influenza outbreak in poultry in the Czech Republic in 2007

On 19th July 2007 re-occurrence of the H5N1 highly pathogenic avian influenza (HPAI) virus was noticed in Europe. The index strain of this novel H5N1 lineage was identified in the Czech Republic where it caused historically the first HPAI outbreak in commercial poultry. In the present study we performed molecular and phylogenetic analysis of the index strain of the re-emerging H5N1 virus lineage along with the Czech and the Slovak H5N1 strains collected in 2006 and established the evolutionary relationships to additional viruses circulated in Europe in 2005-2006. Our analysis revealed that the Czech and the Slovak H5N1 viruses collected during 2006 were separated into two sub-clades 2.2.1 and 2.2.2, which predominated in Europe during 2005-2006. On the contrary the newly emerged H5N1 viruses belonged to a clearly distinguishable sub-clade 2.2.3. Within the sub-clade 2.2.3 the Czech H5N1 strains showed the closest relationships to the simultaneously circulated viruses from Germany, Romania and Russia (Krasnodar) in 2007 and were further clustered with the viruses from Afghanistan and Mongolia circulated in 2006. The origin of the Czech 2007 H5N1 HPAI strains was also discussed.