太白林区点尾尺蛾的调查研究

Euctenurapteryxnigrocciliaria Leech in Taibai Forest Area

点尾尺蛾(Euctenurapteryx nigrocciliaria),是粗榧科(Cephalotaxaceae)植物的一种毁灭性害虫。2015-2016年对陕西省太白林业局、太白山自然保护区点尾尺蛾发生情况调查研究,点尾尺蛾在太白林区中山区1年发生1代,以卵在寄主的叶背、树皮裂缝及附近杂草上越冬。该虫在中山地带山坡、沟谷地均有不同程度发生,有虫株率为79.4%~96.4%,虫口密度60~207头·株-1。受害最重的是陕西省太白林业局苏家沟林场王家沟管护站。该虫每年5月下旬始发,至9月下旬成虫产卵结束。本文针对点尾尺蛾的发生危害程度提出了点尾尺蛾的综合防治方案。

Euctenurapteryxnigrocciliaria Leech,Cephalotaxus（Cephalotaxaceae）is a devastating pest.It was investigated during 2015-2016 inTaibai Forestry Bureau and TaibaishanNature Reserve in Shaanxi Province.In middle district of the Qinling Mountains,ithappens 1generationa year,with eggs laid in the back of the host leaves,bark cracks and weeds over winter.It occurs in slopes of middle mountain area or valley to varying degrees,percentage of trees infected is 79.4% ~ 96.4%,and population density is 60~207/plant.Most seriously infected area is in Wangjiagou management stationof Su Jia Gou Farm belonging toTaibai Forestry Bureau.The insect starts in late May and started to lay eggs in late September.Integrated measures to control the pest were put forward.