摘要
针对大白菜软腐病危害重，防治效果不理想等问题。从病区健、病株作物根际上分离到１２６株细菌，通过菌株离体拮抗性能、菌株荧光反应、菌株处理后大白菜过氧化物酶活性以及对盆栽和田间小区大白菜软腐病的防治等试验，获得了Ｂ１１、Ｂ１２、Ｊ１Ｂ等３个较理想的生防菌株。其对软腐欧氏杆菌拮抗圈半径分别为１４．５ｍｍ、１２．５ｍｍ、１７．０ｍｍ；处理大白菜后过氧化物酶活性分别比对照增加３４．１０％、２４．１２％、１３．９３％；大田小区试验防效分别为５９．８％、５０．２％、３８．８％，产量分别比对照增加２８．５％、１８．６％、２５．７％。
Chinese cabbage Erwinia carotovora var.had caused serious damage and its prevention efficiency was not high.From crop rhizosphere of the healthy and the diseased plants in the diseased areas,three isolates,named B11、B12 and J1B,were selected from experiments of antagonistic ability in the plates, fluorescence reaction,peroxidase activity of isolates and experiments in the fields and the pots. The diameters of their inhibition zone against Eriwinia carotovora var. were 14 5 mm、12 5 mm and 17 0 mm respectively;peroxidase activities of Chinese cabbage were increased by 34.10%、24.12% and 13 93% respectively;the control effects were 59 8%、50 2% and 38 8% respectively.
出处
《福建农业学报》
CAS
1999年第1期15-18,共4页
Fujian Journal of Agricultural Sciences
关键词
筛选
利用
生防菌株
大白菜软腐病
Selection
Utilization
Biocontrol bacteria
Chinese cabbage Erwinia carotovora var.
