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通过对从菲律宾Laguna省水稻植株上分离获得的700个细菌菌株进行离体与生物测定发现，在水稻生态系统中，存在着大量格兰氏阴性、非致病性、对纹枯病有拮抗作用的细菌微生物。根据拮抗细菌分离来源分析结果表明，从病株和水稻生长后期能分离到比健株和生长前期更多的拮抗细菌。用Biolog的方法测定了195个细菌菌株的种类。在147个格兰氏阴性菌株中有13个属39个种，在48个格兰氏阳性菌株中有8个属13个种。在195个被测菌株中有20个菌株对纹枯病菌具有较强的拮抗作用，它们分别归属于7个属12个种。
In vitro and bioassay of 700 bacterial strains isolated from rice plants in the Laguna province of the Philippines revealed that there was a large amount of Gram-negative, non-pathogenic and antagonistic effects on sheath blight in the rice ecosystem Bacterial microbes. According to the results of antagonistic bacteria separation source analysis, more antagonistic bacteria can be isolated from the healthy plants and the early growth stage from diseased plants and rice. The method of Biolog was used to determine the species of 195 bacterial strains. Thirteen of the 147 Gram-negative isolates were 39 species, and of the 48 Gram-positive isolates, 13 were found. Twenty strains of 195 tested strains showed strong antagonism against R. solani, which belonged to 12 genera of 7 genera.