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皱鞘双条杉天牛 (SemanotussinoausterGressitt)是杉木的主要蛀干害虫之一 ,在镇雄县 1年发生 1代 ,少数为 2年 1代 ,以成虫在蛹室内越冬 .翌年 3月中旬开始外出活动并寻偶进行交尾 ,平均产卵量为 44粒 .3月中旬至 9月下旬为幼虫期 ,8月上旬至 9月上旬为蛹期 ,8月中旬至 9月下旬为成虫羽化时期并滞留于蛹室内越冬 .成虫主要产卵于衰弱木或频死木的粗皮下或树缝内 ,单产 ,少数 2～ 4粒 .生命表资料表明 ,天敌捕食、树脂淹死、病原菌侵染等是其自然种群的主要控制因子 .调查得知 :林龄、坡位、营林措施等对该虫发生有影响 ,适时进行透光间伐及虫害木的清理 ,能有效控制其发生发展
SemanotussinoausterGressitt is one of the major stem borers of Chinese fir, one generation per year in Zhenxiong County, and the second is a few years old and two generations one generation, and adults begin to live in the pupae. Activity and find their own mating, the average number of eggs was 44. Mid March to late September larvae, early August to September early pupal stage, mid August to late September for the adult eclosion period and stay In the pupa indoor winter.The adult main spawning in the weak wood or frequent dead wood under the skin or tree stalk, yield, a few 2 to 4. Life table data show that predators, resin drowned, pathogen infection is its The main control factor of natural population.Study found that: age, slope position, silviculture measures have an impact on the occurrence of the insects, timely transmission of thinning and pest wood cleaning, which can effectively control the occurrence and development