鲁西北地区美国白蛾的发生规律及综合治理

Occurrence Regularity and Comprehensive Management of Hyphantria cunea in Northwest Shandong

美国白蛾对鲁西北地区的林业生产造成了严重破坏,为了更好地进行防治,对该区美国白蛾的危害特点及发生规律进行了系统的调查研究。美国白蛾食性杂、食量大、繁殖力强、危害严重。该虫在鲁西北地区每年发生2~3代,以蛹越冬。环境对美国白蛾的发生起着重要作用,其中最低温度是美国白蛾存活的主要障碍,其年发生代数主要受光照、温度和湿度等因素的影响。防治上应加强检疫及监测预报,在低龄幼虫期使用生物或仿生物、植物源类药剂进行预防,同时采取人工防治、生物防治、药剂防治相结合的综合治理措施。

Hyphantria cunea caused serious damage to forestry production in northwest Shandong.To better control the pest,its damage characteristics and occurrence regularity were systematically investigated.The pest eats various food,multiplies rapidly,and endangers seriously to trees.Hyphantria cunea has 2-3 generations per year in Northwest Shandong,and survives winter with the cocoon.Environment plays an important role in occurrence of Hyphantria cunea,in which the minimum temperature of a region is a major obstacle to its survival.The number of its generations is mainly affected by light,temperature,humidity and other factors.Quarantine,monitoring and forecasting should be strengthened in control.Use of biological,biomimetic or botanical insecticides is suggested for prevention of the young larvae.In the meanwhile,integrated management measures with manual,biological and chemical control methods combined should be applied.