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楸梢螟(Omphisa plagialis Wileman)又称楸螟,是楸树苗圃发生为害最严重的一种害虫。树苗被害部位呈瘤状突起,树干弯曲,中空易风折,不仅影响树形和外观,导致经济价值下降,还影响出树率。树苗受害严重时,受害株率可达80%左右,且1株苗可多处受害,造成较大的经济损失。为探索本地楸梢螟综合防治体系,做到集约化和无害化防治,近2年笔者对楸梢螟在苏南高温、高湿生态条件下的发生规律和为害特点进行了初步研究。
Ophiisa plagialis Wileman, also known as Arborvitae, is the most harmful insect pest of Catalpa bungei. Sapling parts of the tree were tumorous protuberances, trunk bending, easy to wind folding, not only affect the tree shape and appearance, leading to economic decline, but also affect the rate of trees. Saplings seriously damaged, the victim strain rate of up to 80%, and a vaccine may be many victims, resulting in greater economic losses. In order to explore the comprehensive control system of the local catalyster perch in order to intensify and detoxify prevention and control, the author conducted a preliminary study on the occurrence and damage characteristics of the catapult catalys.