摘要
在菜园生态条件下，以１０８ｃｆｕ／ｍｌ浓度的Ｂ菌株制剂对大白菜植株喷雾处理，结果可减轻软腐病的为害，叶发病率比对照减少６７个百分点，防效为５９．８％，而且有促进植株生长作用，其单株产量比对照高出１９．０％。同时还表明，Ｂ菌株可诱导提高植株体内过氧化物酶活性，表现一定的抗病性。
The bacterial strain B was used to control chinese cabbage soft rot in field The results showed that the infection of pathogen on leaves was reduced by 67%, and a 59 8% controlling effect on incidence of disease was obtained It also indicated that bacterial strain B may induce the increase of peroxidase in the plants of chinese cabbage, the averaged OD of peroxidase was increased by 24 6% when comparing with the control The treated chinese cabbage resisted to Erwinia carolovora The preliminary conclusion is that strain B is a promising bacterium for biocontrol purpose
关键词
大白菜
软腐病
生物防治
B菌株制剂
Erwinia carolovora Jonrs pv carotovora Bergey et al
Biocontrol
