上海地区长足大竹象初报

Cyrtotrachelus buqueti in Shanghai

长足大竹象是慈孝竹上危害性较大的害虫 ,文章首次报道了其在上海的发生。在上海浦东局部地区 ,已有 63 2 8%的慈孝竹新笋受其危害而不能成竹。该虫在上海 1a发生 1代 ,以成虫在土中蛹室内越冬 ,7月上旬成虫开始出土 ,持续至 10月上旬 ,幼虫危害的高峰期在 7- 9月 ,7月下旬- 10月下旬化蛹 ,8月上旬 - 11月上旬成虫在土中羽化。宝发 1号、氧化乐果、乐斯本、阿克泰等 4种农药喷雾防治长足大竹象 ,校正死亡率分别为 :31 70 %、31 4 2 %、31 4 2 %及 9 0 9%。

Cyrtotrachelus buqueti Guer,a serious pest on Bambusa multiplex in Shanghai,damages 63.28% bamboo shoots.It has one generation a year in Shanghai and overwinters as adult in the puparia in the soil.The appearance of adult lasts from July to October.The larva causes damage from July to September and pupats from the last ten-days of July to the last ten-days of October.From the first ten-day of August to the first ten-day of November,the adult emerges from the soil.The result of the field trials showed that the mortalities of the pest caused by Baofayihao, Omethoate,Chlorpyrifos and Actara were 31.70%,31.42% 31.42% and 9.09% respectively.