利用花绒寄甲控制栗山天牛林间试验效果

Control of Massicus raddei(Blessig)(Coleoptera:Cerambycidae) by Parasitic Beetle Dastarcus helophoroides Sharp(Coleoptera:Bothrideridae)

采用林间释放花绒寄甲卵卡(每卡有卵80～900粒)的方法对栗山天牛进行防治,每个天牛排孔处挂1个卵卡,约两个月后,通过检查幼虫排粪孔判断花绒寄甲对该天牛幼虫的寄生数及天牛幼虫的存活数量。结果表明,释放区虫口减退率88.60%(对照54.19%)。

Dastarcus helophoroides is a main insect natural enemy of Massicus raddei.Eggs of D. helophoroides were released to control larvae of M.raddei in fields in 2008.Parasitism and survival of M.raddei larvae were determined by examining whether there were frasses extruded from tunnels.Results showed that population of M.raddei larvae were decreased by 88.60%after release of D. helophoroides eggs.