白僵菌孢悬液添加增效剂对松墨天牛幼虫的致死作用

将球孢白僵菌孢悬液分别与海藻糖、葡萄糖、L-丙氨酸和FeSO44种增效剂混合,各自配成4种不同浓度的增效剂白僵菌孢悬液,接种于松墨天牛幼虫体表.结果表明,4种增效剂在白僵菌防治松墨天牛幼虫的过程中都起到一定的增效作用,添加海藻糖可使天牛幼虫的致死率平均提高18.05%,葡萄糖平均提高8.75%.第11天时,4种浓度海藻糖使天牛幼虫的致死率分别提高23.1%、76.9%、15.4%、53.8%;葡萄糖分别提高30.8%、0.0%、53.8%、7.7%;L-丙氨酸分别提高38.5%、23.1%、23.1%、-7.7%;FeSO4分别提高14.04%、36.39%、16.71%、20.67%.

Research on the Biocontrol ofM onocham us a lte rna tus Larvaeby B eauve ria bassiana with Severa l Synerg ists

B eauveria bassiana spore suspension wasmixed with trehalose, glucose, L-alanine and FeSO₄ respectively,and were made up 4 different concentrations of synergist of B. bassiana spore suspension, then inoculated them on theM onocham us alternatus larvae. The results showed that four different kinds of synergistsmade a certain synergism inthe p rocess of control of B. bassiana toM. alternatus larvae. The death rate ofM. alternatus larvae was increased onan average of 18. 05% by trehalose-additives; That was increased on an average of 8. 75% by glucose. In the 11thday, the death rates of M. alternatus larvae were increased on 23. 1%, 76. 9%, 15. 4%, 53. 8% respectively bydifferent concentration spore suspensions of trehalose. They were increased by 30. 8%, 0. 0%, 53. 8%, 7. 7%respectively by glucose, increased by 38. 5%, 23. 1%, 23. 1%, - 7. 7% respectively by L-alanine, and increased by14. 04%, 36. 39%, 16. 71%, 20. 67% respectively by FeSO₄.