【摘要】 １９９１－１９９３年在黑龙江省主要烟区的１１个县及长春市采样，得１２９个毒株。经鉴别寄主测定，抗血清反应（板式酶联法或斑点酶联法）及电镜或免疫电镜观察，有ＴＭＶ（４３．４％），ＰＶＹ（１７．８％），ＣＭＶ（３．９％），ＴＲＶ（０．８％），ＴＳＷＶ等病毒，ＴＭＶ与ＰＶＹ混合侵染的占１０．１％，ＰＶＹ与其它病毒混合侵染的占１１．６％，另有５个标样为马铃薯Ｙ病毒组成员，１０个为未知。更多还原

【Abstract】 ne hundred and twenty nine samples of virus infected tobacco leaves were collected from 11counties/cities of Heilongjiang Province and Changchun City during early June to late August,1991-1993.Viruses were identified by differential hosts,serological assays(ELISA or DIBA)and electronmicroscopy of ISEM.TMV,PVY,CMV,TRV,TSWV and TMV-Y were foundisolately or complicatedly.The most predominate virus was TMV,and the next one was PVY,their rates of occurence were 53.5%and 40.3%,respectively.更多还原