Under a certain amount of touching S. guani (M. alternatus amount: S. guan amount=1:2～5), the bigger the M. alternatus instar was, the lower the parasitized effect was, the average parastizing death rate was 90% for the 3-instar larva, 77.5% for the 4-ins
Under a certain amount of touching S. guani (M. alternatus amount: S. guan amount=1:2～5), the bigger the M. alternatus instar was, the lower the parasitized effect was, the average parastizing death rate was 90% for the 3-instar larva, 77.5% for the 4-ins
在一定的接蜂量（虫蜂比1:2～1:5）下，松墨天牛龄期越大，被寄生效果越低，对3龄幼虫的平均寄生死亡率为90%，4龄虫平均为77.5%，5龄虫平均为52.5%。