抑菌测定

The fungistatic activity of F-15 was determined by confronting incubation on PDA plates and control test to the potted plants in greenhouse, and the taxonomic identification of the strain was carried out with morphological and chemical methods.

采用平板对峙培养法和温室盆栽防治法测定了其抑菌活性，并通过形态学、化学的方法初步研究了其分类地位。

Methods Minimal inhibitory concentration of the compound Isatis indigotica Fort.injection on bacteria and fungi was assayed by serial dilution test.

方法体外抑菌作用采用液体培养基连续稀释法测定复方大青叶的最小抑菌浓度；抗内毒素作用采用细菌内毒素检查法。

One endophytic bacteria strain LP-5 which could significantly inhibit some phytopathogenic fungi was isolated from xylem of pear. According to morphology, physicochemical test, and analysis of the 16S rDNA sequence and specific amplified fragment, the strain was identified as Bacillus amyloliquefaciens.

从梨树木质部分离到1株具有强烈抑菌活性的内生细菌LP-5，通过形态观察、生理生化测定、16S rDNA序列分析及特异基因片段扩增，将其鉴定为解淀粉芽孢杆菌。

The preliminary bioassay showed that all compounds had certain fungicidal and insecticidal activities. The inhibition rates of compounds 5f and 5h were above 95% against Colle-totrichum gossypii at 100 mg/L, and the mortality rates of compounds 5g and 7d were above 85% against Tetranychus urticae at 250 mg/L.

初步生物活性测定结果表明，在试验浓度下，目标化合物均具有一定的杀虫和抑菌活性，其中化合物5f和5h在100 mg/L浓度下对炭疽病菌的抑制率达95%；化合物5g和7d在250 mg/L浓度下对棉红蜘蛛的致死率达85%。

Objective］ The study aimed to screen the fungicides that had evident antibacterial effect against Ustilaginoidea virens and their best mixed ratio.［Method］ The U. virens strains were separated from rice panicle that had severe disease in rice field of Yaan, 6 fungicides and validamycin and diniconazole mixed with different ratio were selected to carry out the indoor toxicity test on mycelia growth of U. virens with mycelium dry weight method, and the interaction of mixed fungicides was evaluated according to the method of Wadley.

［目的］筛选出对稻曲病菌抑菌效果显著的杀菌剂及其最佳混配比例，［方法］从雅安稻田发病严重的稻穗上分离出稻曲病菌株，选择6种杀菌剂以及井冈霉素和烯唑醇不同混配比例，用菌丝干重法对稻曲病菌菌丝的生长进行室内毒力测定，并根据Wadley方法评价混剂的相互作用。

We got the effective bacteriocide dilute rate for Valsa mali Miyabe et Yamada,apple rota disease and cucumber mildew by laboratory biological assessment and large scale fields experiment.

通过室内生物测定及两处大规模田间药效实验得出苦·小檗碱杀菌水剂对苹果腐烂病、苹果轮纹病和黄瓜霜霉病的有效抑菌稀释度。

The agar diffusion and plate serial dilution test was used to detect the effect of CMCT-Ag+ against Pg by observing cingula diameter and bacteria plaque.

采用琼脂扩散和固体平板二倍稀释法观察抑菌环直径和菌斑数，测定 CMCT-Ag+对 Pg的抑制作用。

To determine the concentrations of berberine hydrochloride,chlorogenic acid and baicalin in rabbit body fluid and their minimal inhibitory concentrations respectively,and to clarify the relationship between the heat-clearing and detoxicating function of the three Chinese herbal medicinal ingredients and their bacteriostatic actions.

测定盐酸小檗碱、绿原酸和黄芩苷在兔体液内浓度，及各成分体外最小抑菌浓度，阐明3种中药成分清热解毒功能与其抑菌作用的关系。

METHODS: Pharyngo nasoparyngeal swab specimen were collected from 220 healthy children in two kindergartens in Guangzhou city. The swab was spread on the blood disk, cultured at 35℃, 5% CO2 for 24 h and identified by Optochin paper. The minimal inhibitory concentration of penicillin was measured by the agar dilution method. The positive rates of bacteria carrier were compared by using chi square test.

对广州市区两家幼儿园220例健康儿童，用咽拭子从鼻咽部采集标本接种至血平板，35℃ 5% CO2 条件下孵育24 h，Optochin纸片确诊；琼脂板对倍稀释法测定青霉素最低抑菌浓度。

MethodsTo evaluate the minimal inhibitory concentration of 15 decoctions through double fold dilution method.

采用液体试管两倍稀释法测定各煎液对肺炎链球菌的最低抑菌浓度，比较各配伍组合后的药效学改变。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。