苌楚鸠蝠蛾的生物学特性及防治研究

苌楚鸠蝠蛾Ｐｈａｓｓｕｓ ａｃｔｉｎｉｄｉａｅ Ｙａｎｇ ｅｔ Ｗａｎｇ是福建近年来严重为害猕猴的一种新的蛀干害虫。我们于１９８４－１９８９年在建宁县猕猴桃试验站进行研究。该虫一年一代，以卵在树兜的地面越冬，幼虫为害猕猴桃植株韧皮部和髓部，外部形成虫屑包，内部形成蛀道，阻滞养分和水分的正常输送，轻者枝叶发黄，重者风折枯死。除选用抗虫品种外，采用２．５％溴氰菊脂１∶５０００液灌注；９０％敌百虫晶体１

STUDIES ON PHASSUS ACTINIDIAE YANG ET.WANG INJURIOUS TO ACTINIDIA SPP.

Phatsus actinidiae has been recently a new stem-boring pest which injuriesActinidia trees severely in the north of Fujian Province.The study on its bionomics and'the control measures were carried out in Actinidia ExperimentStation in Jianning Fujian during 1984-1989.The results show that the insects reproducd one generation a year and overwinter as eggs on ground nearthe tree stumps.The larvae bore the phloem and pith and form tunnels insideand dust bags outside the injured parts,which hinder the normal transportationof nutrients and water,as a result,it leads to discolor of shouts and leaveeven dieback of the tree.Apart from selecting plant varieties resistant,someeffective control measures must be applied,such as pouring water dilution of2.5% Decamethtin the ratio of 1:5000(insecticide:water) or stuffing the toscimud made of 90% Dipterex crystals into the burrows on the trunks of hostplant;smearing Vaseline mixed withDichlorvos around the trunk to preventthe larvae from climbing up;killing tab larvae with fine iron wires and capturing the adults immediately after incubation etc.