利用松毛虫赤眼蜂防治杉梢小卷蛾试验简报

Preliminary Report on Control of Polychrosis cunninghamiacola with Trichogramma dendrolimi Matsumura

在有杉梢小卷蛾危害的2～4年生杉木幼林中,释放松毛虫赤眼蜂,明显地降低了杉木受害率,并有持续效果。每亩放蜂2万头、4万头和6万头三种处理的效果,无显著性差异。

It can clearly reduce suffering rate of Cunninghamia lanceolata to release Tric-hogramma dendrolimi Matsumura in 2～4 year young growth of C. lanceolata that was harmedby Polychrosis cunninghamiacola. The effect of releasing 2 myriad and 4 myriad and 6 myriad.per mu had no clear difference.