复合菌剂AR99防治辣椒青枯病

Biological control of Capsicum bacterial wilt by compound bacterial mixture AR99

从本实验室生防细菌库中选择5个功能互补性的菌株复配,制成防治辣椒青枯病的生防制剂AR99。温室实验中,AR99复合菌剂和5个单一菌株防病效果分别达到91.1％(AR99)、88.9％(R1)、57.0％(A6)、66.7％(R9)、80.5％(J3)、80.5％(A9),复合菌剂AR99的防治效果最为显著。2000、2001年在淮阴分别用拌菌堆肥法、灌根法进行生防实验。70 d后用AR99复合菌剂平均防效为94.O％(拌菌堆肥法)、77.0％(灌根法),平均增产效果分别为367.0％、57.8％。

Five bacterial strains with complementary biocontrol activities were selected and mixed as one biocontrol agent AR99 for the control of Capsicum bacterial wilt. In the greenhouse test,the biocontrol efficiencies of the mixture and individual bacterium suspension R1, A9, J3, R9 and A6 strains were 91. 1%, 88. 9%, 80. 5%, 80. 5%, 66. 7% and 57. 0%, respectively, with that of the mixture AR99 being the highest. Field plot tests for the biocontrol of Capsicum bacterial wilt were done by composting method and root-drenching method in Huaian, Jiangsu in 2000 and 2001. The average disease control effieciencies of AR99 were 94. 0% and 77. 0%, with the average yield increasing efficiencies of 367. 0% and 57. 8%, respectively, by the composting method and root-drenching method 70 days after treatment.