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In this paper, 1554 strains of bacteria were isolated from the soybean rhizophere in the different continuous systems. Those biocontrol bacteria were screened in vitro and in vivo. 6 strains of them had the better control efficacy. They exhibited the different antagonism to the pathogens of soybean root in vitro. The strains 18BR2-2 and 18BR9-1 showed a wide range of antagonism against Fusarium oxysporum, F. avenaoeum, F. solani and Rhizoctonia solani in vitro. The 6 strains exhibited different control efficacy to soybean root rot in greenhouse and in field. In greenhouse, they could decrease the degree of soybean disease significantly, and the control efficacy of 18BR2-2 was the best and can reach 45.90%. In theory, soybean treated by 18BR2-2 may postpone the days of outbreaking of disease for 6 days. The strain 18BR2-2 also promoted the growth of soybean seedling and, raising the soybean height for 11.24%, increasing dry weight for 40.91% and fresh weight for 35.27%.

本研究从长期连作田种植的大豆及其根际土壤中分离细菌1554株，采用平板测试、温室盆栽及田间试验等方法，筛选了对大豆根腐病菌(主要是尖孢镰孢菌Fusarium oxysporum)有很好作用效果的生防细菌6株，在离体的条件下均表现出不同程度的拮抗作用，其中生防细菌18BR2-2和18BR9-1表现出很广的杀菌谱，对大豆根腐病菌尖孢镰孢菌(F.oxysporum)、燕麦镰孢菌(F.avenaoeum)、茄腐镰孢菌和立枯丝核菌都有很好的离体拮抗作用，并且这6株生防细菌在盆栽和田间的情况下均表现出对大豆根腐病一定的防治效果。

High-density BAC DNA filter of channel catfish was imtially screened with pooled overgo probes representing 25 CC chernokines,and then dot blot was conducted with the SCYA126 cDNA probe.

通过探针杂交筛选斑点叉尾鮰BAC基因组文库，利用引物步移的方法对阳性克隆BAC047_K12进行序列测定，得到2815bp的SCYA126基因组序列。

Endophtic bacteria strains were isolated from healthy tobaccos from heavy disease plots in Yongzhou, Ningxiang and Liuyang. By Laboratory dual culture test, seventeen actinomycetes to Phytophthora parasitica var. nicotianae were screened.

同时在湖南永州、浏阳和宁乡等地发病重的田块采集健株共分离到内生细菌120株，经室内平皿对峙培养法测定，其中8株内生细菌菌株在室内有较强的拮抗作用。

Multiplex-PCR detection method for Pasteurella multocida and Haemophilus parasuis had been developed based on published single PCR for these pathogens. The PCR reagents, annealing temperature and the PCR procedure were optimized and the primers were screened, the PCR products including 457bp of PM and 1090bp of HPS were obtained just by one test.

在已经建立的多杀性巴氏杆菌、副猪嗜血杆菌的单项PCR诊断方法的基础上，通过对扩增条件和引物的筛选，成功地建立了PM、HPS复合PCR诊断方法，利用一次PCR反应，即可同时扩增多杀性巴氏杆菌的457 bp和副猪嗜血杆菌的1090 bp的特异性片段。

The most appropriate method for supporting phosphotungstic acid as screened out from three different methods.

比较了三种不同的负载方法对催化活性的影响，筛选出活性最高的负载方法。

In the test with double factors design, the effects of different combinations of medium and rooting agent on the rotting of Photinia frasery cuttings were studied and suitable cutting medium and concentration of rooting agent under full light atomizing conditions were screened out.

方法］采用双因素设计，通过田间试验研究不同基质和生根剂组合对红叶石楠扦插生根的影响，筛选出全光照弥雾条件下适宜的扦插基质和生根剂浓度。

In the test with double factors design, the effects of different combinations of medium and rooting agent on the rotting of Photinia frasery cuttings were studied and suitable cutting medium and concentration of rooting agent under full light atomizing conditions were screened out.

咱方法暂采用双因素设计，通过田间试验研究不同基质和生根剂组合对红叶石楠扦插生根的影响，筛选出全光照弥雾条件下适宜的扦插基质和生根剂浓度。

Through the determination of biological activities indoors, 40 strains antagonists are screened against Botrytis cinerea, Penicillium digitatum, Penicillium expansum, Alternaria kikuchiana and Physalospora piricola which are primary diseases on fruits.

经过室内生物活性测定，筛选得到40株对草莓灰霉病菌、柑橘绿霉病菌、苹果青霉病菌、梨黑斑病菌、梨轮纹病菌五种水果常见采后病害都有明显抑菌活性的细菌。

Over 521 strains were screened for phytase production from 30 kinds of soil samples.

从土壤中分离的500多个菌株中筛选出一株产植酸酶活力较高的菌株LW03，经形态学观察和生化试验，初步鉴定为根霉，属于米根霉组。

Result The phytopathogenic fungus Pythium aphanidermatum was isolated; 7 strains of antagonistic actinomycete, which had obvious inhibitory effects on Pythium aphanidermatum were screened. The inhibitory ring of No.8 strain was 13.3 mm, and reached 88.3% when cultivated for 120 h.

伽师甜瓜猝倒病的病原菌为瓜果腐霉；筛选出7株对瓜果腐霉具有显著拮抗性的生防放线菌，其中8号放线菌对瓜果腐霉的拮抗环宽度为13.3mm，其无菌发酵滤液对瓜果腐霉的抑菌率在培养120h时高达88.3%。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。