花绒寄甲不同释放方式防治松褐天牛试验

Test of Different Methods of Releasing Dastarcus helophoroides on Control Effecacy of Monochamus alternatus

通过诱木堆释放花绒寄甲,比较分析了花绒寄甲卵、成虫、卵+成虫野外寄生松褐天牛幼虫的效果及防治成本。结果显示,从对松褐天牛的寄生率来看,花绒寄甲卵>卵+成虫>成虫,从防治成本来看,达到相同的寄生率,花绒寄甲卵<成虫<卵+成虫。因此,释放花绒寄甲卵是最有效最经济的方式,且寄生率随着卵的增加而上升。当释放3 000粒卵时,对松褐天牛幼虫的寄生率达到64.52%。

By releasing Datarcus helophoroides on Bait-trees,we compared and analyzed their parasitic rates on Monochamus alternatus and the economic cost of the three releasing methods using Datarcus helophoroides spawns,adults,spawns and adults.The results showed that from the perspective of the parasitic rates,the method using Datarcus helophoroides spawns was the best,the method using spawns and adults was at the second place,and the adult was the worse.From the view point of the economic cost,if achieving the same parasitic rate,the method using Datarcus helophoroides spawns was the best,the method using adults was at the second place,and the method using spawns and adults was the worse.Therefore,releasing Datarcus helophoroides spawns was the most effective and economical way,and the parasitic rate increased with the increasing of releasing spawns.When we released 3000 spawns,the parasitic rate on Monochamus alternatus was 64.52%.