寄生性天敌蒲螨对梨小食心虫的控制研究

Control Study of Parasitoid Pyemotes sp.against Oriental Fruit Moth(Grapholitha molesta Bussck)

[目的]研究蒲螨对危害石楠的梨小食心虫的寄生能力和田间防治效果。[方法]进行蒲螨对梨小食心虫的室内侵染试验以及野外防治试验,观察蒲螨的寄生能力及活动特性,研究湿度、温度等环境因子对蒲螨寄生能力的影响。[结果]在适宜的条件下蒲螨对梨小食心虫有良好的防治效果;在不同的温度、湿度条件下蒲螨对寄主的搜寻能力存在差异,湿度对蒲螨活动能力影响较大,而温度对蒲螨个体活力影响较大。[结论]蒲螨对梨小食心虫的控制是有效的。

[Objective]The parasitic ability and field control effect of Pyemotes sp.against oriental fruit moth（Grapholitha molesta Bussck） which caused damage on Photinia were studied.[Method]The indoor infection test and field control test of Pyemotes sp.against oriental fruit moth was carried out.The parasitic ability and activity characteristic of Pyemotes sp.were observed,and the effect of environmental factors such as humidity and temperature,etc.on the parasitic ability of Pyemotes sp.was studied.[Result]Pyemotes sp.had good control effect on oriental fruit moth under the proper conditions;the host searching abilities of Pyemotes sp.were different at different temperature and humidity conditions,humidity had large impact on the activity of Pyemotes sp.,while temperature had large impact on the individual activity.[Conclusion]The result showed that Pyemotes sp.had effective control effort on oriental fruit moth.