应用Bt防治菜青虫(pieris rapae linne)试验研究

Experimental Studies on Controlling Imported Cabbageworm(pieris rapae linne)with Bt

应用 Bt 菌悬液对菜青虫进行了防治试验,防治效果为87.5～97.4％。应用适宜浓度为300～500倍。对人畜无害,是值得推广应用的生物制剂。

The experiment on controlling imported cabbageworm was conducted with Bt bacterium suspension.The insecticided efficience was 87.5-97.4% and the avaible consentration was 300-500 times.Bt which is innocuous for human and ani- mal,is worth spreading as one of useful biologcals.