病原菌

China. Phytophthora sojae could be spread as oospores carried in soybean Seed, as well as oospores existed in soil and disease soybean residues.

大豆疫霉病原菌的卵孢子主要通过黏附在种子表面以及混杂在种子里的土壤颗粒进行传播，也可通过带病种子传播。

From 2004 to 2006, tobacco bacterial wilt disease survey and pathogen isolation were carried out in Yunnan province.

为了了解云南省烟草青枯病的危害情况，指导病害预测预报与综合防治；2004年至2006年，对云南省烟草青枯病的发生进行了调查，对田间采集的烟草茎下部黑色坏死症状样品进行了病原菌分离。

The numerical and pathogenic variations of Ralstonia solanacearum distributed within the tissue of host plants were investigated for a preliminary study. Scientists discussed the relationship between the pathogen and the plant particularly from the point view of an ecological niche. The samples were taken in the fields of tomato, eggplant, tobacco, peanut and ginger in Fujian province.

［目的］通过分析青枯雷尔氏菌在不同寄主发病植株、在同一寄主不同侵染状态植株和同一寄主不同发病阶段植株体内分布及其致病力的异质性，从生态位角度来初步探讨该病原菌与植物之间的相互关系。

Strains of Ralstonia solanacearum are isolated from 258 samples gathered from 12 counties of Yunnan provinces. The pathogen backward inoculation test and ELISA test show that tobacco lower stem black necrotic in Wenshan and Baoshan prefecture is mostly associated with tobacco bacterial wilt, partial with black shank.

从云南省12个县采集的258个烟草病样中分离青枯雷尔氏菌株219个，病原菌回接试验和ELISA检测结果表明文山州、保山市的烟草茎下部黑色坏死症状病害，大部分为烟草青枯病，伴随部分黑胫病。

Tobacco brown spot caused by Alternaria alternataKeissler is an important fungal disease on the crop worldwide and makes large economic losses in tobacco maturation period.

烟草赤星病是烟草生产上重要的真菌性病害，其病原菌为链格孢属真菌，在烟草成熟后期危害十分严重，造成重大经济损失。

Tobacco brown spot disease has been an important leaf disease in tobacco. In tobacco maturation period, this disease causes tobacco brown spot disease seriously, and makes large economic losses. Its main pathogen is Alternaria alterrrata Keisslar.

烟草赤星病是烟草的一类重要叶部病害，其主要病原菌为链格孢属真菌Alternaria alterrrata (Fties Keisslar，在烟草成熟后期危害十分严重，造成重大经济损失。

Cucumber target leaf spot is a serious disease in greenhouse in Shandong province.

对黄瓜棒孢叶斑病在山东省的为害、症状特点、生物学特性以及病原菌的鉴定进行了研究。

On soil fungi, Fusarium root shell mold, Rhizoctonia, Pythium, Miao-rot fungus, Corticiumpathogens have a significant effect on the damping-off,diseases, damping-off, Fusarium wilt, Verticillium, Sclerotinia, Colletotrichum, disease, dry rot, scab, Sclerotinia rot, seedling blight, stem blight, leaf blight, steep root, even the special effects for the continuous cropping obstacles.

对土壤真菌、镰刀菌、根壳菌、丝核菌、腐霉菌、苗腐菌、伏革菌等病原菌都有显著的防治效对立枯病、烂秧病、猝倒病、枯萎病、黄萎病、菌核病、炭疽病、疫病、干腐病、黑星病、菌核软腐病、苗枯病、茎枯病、叶枯病、沤根、连作重茬障碍有特效。

At the same time, we carried on to observe the pathogenic plant disease symptom characteristic in detail. 3. In lab,experimental result expressed that Difenoconazole 10% WP and Propiconazol 25% EC have the highest control effect, wheras Carbendazim 98％ WP and metalaxyl 25% WP almost can not repress development of cotton leaf spot pathogens.

室内药剂筛选试验研究表明，25%丙环唑乳油、10%世高可湿性粉剂对棉花叶斑病致病菌具有很好的抑菌效果，这两种杀菌剂的作用效果普遍高于其它药剂，是较为理想的化学防治药剂；98％多菌灵可湿性粉剂和25%甲霜灵可湿性粉剂，抑菌效果不理想，对病原菌生长的抑制作用普遍不明显。

Gentiana spot blotch ; pathogen ; biological characteristics

龙胆草斑枯病；病原菌；生物学特性

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。