Antagonistic bacteria for preventing and eliminating the bacterial wilt of continuous cropping tobacco and their microbial organic fertilizer

摘要

A 01travt The present invention relates to the antagoriic bacteria that are used to prevent and eliminate tobacco cterial wil and their microbia organic fertilizer, which belong to tie teciIogy for agriculal intensive prduction The present invention separates two antagonistic bacteria (rvlu br ev-JIs NJL-25 and Bacillus cereus NJL-14) that have remnaikabei antagonisti action against he pathogens of tobacco baceria wilt. Microbial. oanic fertilizer is produced frm these antagonistic bacteria nd organic compost W b in te cotet of each of NjL-5 and TL-14 is above 1x10 IOS/g, the COttM of total itrogen is 4~5% above 90% of hlnitogen i: organic niTrogent the content of' total nitrgnphospos-ium nutrient is 6~1% and the conent of organic matt is 30-35%1. As indicated by experiments, after the microbial organic li i p nto soi it i unable rapid multilicaton of e antagonistic bacteria into a dominant microflora in e soR and achieve mor m than 97,6% of biocontrol r ate tobacco bacterial wit in the soil sufring from tobacco b-acterial wit, If the microbial organic fertilizer is applied in t-he soil without cotinuous cropping obsacle in a hong ame, it can prevnt the occurrence of the bacterial wilt or cominuous cropping tobacco to a gr-ea extent,