根据拮抗菌株和病原菌株在植物体内外存在着相关性的原理,从果园土壤微生物区系的自然状态出发,采用平皿相互拮抗的筛选方法,获得了一株编号为1-1-4的拮抗有效菌株。其分类地位大致处于假单胞杆菌属(Psedomonas)的第一部分内1—5模式种,而且更接近于恶臭假单胞菌(P.Putida),是与菌株 K84分别属于不同属的一株菌株。经连续三年田间防治试验,证实了菌株1-1-4具有与菌株 K84相近的防效,可以控制 According to the principle that the antagonistic strains and pathogenic strains exist in plants both in vitro and in vivo, a series of antagonistic screening methods were used to study the natural state of soil microbial flora in orchards. Strain. Its taxonomic status is roughly in the first to the last part of Pseudomonas species 1-5 and more closely to P. putida, a strain belonging to a different genus from strain K84 . After three consecutive years of field trials, it was confirmed that strain 1-1-4 had the similar control effect as strain K84,