葡萄双棘长蠹生物学特性及防治

Biological Characteristics and Control on Sinoxylon japonicum Lesne of Grape

通过实地调查、采集标本、与当地技术人员及果农交谈等方式,调查该葡萄双棘长蠹在天水地区分布与危害情况。结果表明:双棘长蠹在天水市1a发生1代,以成虫越冬,翌年3月中下旬出蛰并蛀食葡萄枝蔓,补充营养,4月上旬交尾产卵。4月中下旬始见幼虫,幼虫顺枝条纵向蛀食木质部,粪便排于坑道内,幼虫老熟后在坑道内化蛹。6月中旬至7月中旬陆续化蛹,蛹期6～7d。6月下旬起成虫羽化,羽化后不转移,继续取食剩余木质部,8月下旬陆续出孔迁移,但不危害葡萄新枝蔓,10月成虫越冬。

Based on field investigation,specimens collection and communication with local people,Sinoxylon japonicum Lesne distribution,damage and its biological characteristics in Tianshui city were investigated.The results showed that Sinoxylon japonicum Lesne took place one generation every year in Tianshui city,and got across the winter in adult,the next year they came to be awaken from the early to middle of March and borer branches and tendrils to absorb replenishing nutrition,in the beginning of April they mating and spawning.Larvaes occurred in the last period of April and borer xylem in longitudinal along with the branches,the feces exhaust in tunnel,in the middle of June to the July mature larvae pupate in host pupa,about 6~7 days.In the last of June adult emergence without metastasis and stay in xylem for feeding.They transfered in the last of August,but they did not harm to new branches.