桃园梨小食心虫发生为害调查及防治对策

2008—2009年,在山西代县桃园开展了梨小食心虫发生动态监测和为害桃梢消长规律调查,调查发现,应用性诱剂监测桃园梨小食心虫成虫,前期诱蛾量大,高峰期明显;后期诱蛾量小,高峰期不明显,且后期梨小食心虫世代重叠现象严重,性诱剂监测能为桃园梨小食心虫前期进行适期防治提供帮助;明确了梨小食心虫为害桃梢盛期在5月中旬至7月上旬,为桃园前期保梢防治提供了有益帮助。结合调查和防治工作实践,提出了桃园梨小食心虫的防治策略以及包括桃园规划、农业措施、性诱剂应用、赤眼蜂释放、药剂防治等比较规范的综合防治技术。

Survey of Infection Damage and Control of the Oriental Fruit Moth, Grapholitha molesta(Busck)in Peach Orchard

The dynamic of the oriental fruit moth, Grapholitha molesta and the dynamic of peach shoots which were damaged by G. molesta were investigated in peach orchard in Daixian county, Shanxi during 2008 to 2009. It was showed that big numbers of the adults were trapped by sex pheromone and the peak was obvious in the prior period. On the contrary, in the later period, the numbers of the adults were few and the peak was not obvious, even the overlapping generations were serious. Using sex pheromone could provided help to control G. molesta in the prior period in peach orchard. From mid-May to early-July were the period in which peach shoots damaged seriously by G. molesta. Combining investigation with the practical work, control tactics and the standardized control techniques including peach orchard planning, agricultural measures, Trichogramma sp releasing, sex pheromone use and chemical control were advanced.