建庄油松梢小蠹的研究

A Study on Coyphalus tabulaeformischienzhuangensis

建庄油松梢小蠹 (Cryhalus tabulaeformis chienzhuangensis)是油松的专食性害虫 ,年发生 3代 ,以成虫在油松侧枝皮层内和木质部表层越冬者占 95 % ,以幼虫越冬者占5 %。第一代成虫出现期为 7月到 8月中旬 ,第二代成虫为 8月中旬到 9月中旬 ,第三代成虫在9月下旬始现 ,越冬后延至翌年 7月上旬。成虫对 α-蒎烯和 β-蒎烯有明显正趋性 ,前者诱集效果优于后者。设置饵枝的诱集效果良好。以 40 %氧化乐果和 40 %乐果 1 0 0倍液喷杀新侵入成虫 ,毒杀作用明显 ,并使残留成虫产卵量下降 80

Describes a specific insect pest of Pinus tabulaeformis Cyphalus tabulaeformis chienzhuangensis.It has three generations per year,and95 percent of them overwinter as adults in wood resides and5 percent overwinter as layvae.The adults of the first generation appear from the middle of July to the middle of August,the second from the middle of Au- gust to the middle the of September,and the third from the last of September till early July of next year after overwintering.Adults have a positive taxis to bothα- pinene andβ- pinene and the former has a better trap and mass affectiveness.Spraying with1 0 0 times diluent of omethoate and dimethoate to invading adults,the secticidal effectiveness was noticeable, above that,oviposition amount of the survial female adults also dropped down about 80 per- cent.