This invention relates to Bacillus amyloliquefaciens BF-1 (Food Industry Research and Development Institute, the patent organisms in number BCRC910498) and the application of the same, which has a unique gene sequence of 16S rRNA, Tet (L), ItuA, ItuB, ItuC, and ItuD. BF-1 and its antibiotics can inhibit the growth of plant pathogenic fungi and plant pathogenic bacteria. It can be used with fungicides, insecticides, herbicides, bactericides, and Bacillus thuringiensis to be a plant protecting composition. BF-1 has productive amylase, protease, cellulase and lipase activity. BF-1 and its products can be applied to plant protection, sewage treatment in agriculture and aquaculture, food and chemical industries.本發明係有關於一種液化澱粉芽孢桿菌菌株(財團法人食品工業發展研究所,專利微生物寄存編號BCRC910498),其命名為BF-1具有獨特的16S rRNA、Tet(L)、ItuA、ItuB、ItuC、ItuD之基因序列,該菌株及所生產的抗生物質,具有抑制植物病原真菌與抑制植物病原細菌之活性。其可與殺真菌劑、殺蟲劑、除草劑、殺細菌劑、蘇力菌搭配使用以成植物保護組成物。該菌株具生產的澱粉分解酵素、蛋白分解酵素、纖維素分解酵素及脂質分解酵素活性的能力。本發明的液化澱粉芽孢桿菌菌株及其產物可應用於植物保護、農業水產養殖污水處理、食品業及化學工業。