玉米象对挥发物趋性的研究

玉米象成虫虫体和玉米、小麦、大米等正己烷萃取物对玉米象两性成虫有诱集性。玉米油、芝麻油对该虫诱性明显。菜油、花生油、生姜油无诱虫活性。塑料探管诱捕器能监测小麦和玉米中的害虫。虫体草取物结合瓦楞纸诱捕器能将玉米集从小麦中诱出。萃取物能加强芝麻油的诱虫性，其诱性与标准诱剂接近，并能引诱米象小蜂。玉米、小麦、大米气味挥发物主成分为亚油酸，其含量有差异。

A STUDY ON THE ATTRACTIVE RESPONSES OF THE ADULTS OF SITOPHILUS ZEAMATS TO VOLATILE MATTER

The extracts derived from the body of adults of maize weevil(Sitophilus zeamais),maize,wheat and rice can attract the adults of the insect of both sexes.Maize oil and sesame oil also showgreat attractancy to the pest while rapeseed oil,groundnut oil and ginger oil have no such action.The pests in wheat and maize grains may be monitored with a plastic probe trap and the extract ofadult bodies combined with corrugated paper traps can induce maize weevils out of the wheat grain.The extract can enhance the attracting action of sesame oil to a level close to the standard lure.Italso can attract Lariophagus distinguendus.The principal component of volatile substances in maize,wheat and rice is linoleic acid,whose concentration varies with crops.