大青叶蝉在新疆阿勒泰发生为害调查及防治

对新疆阿勒泰地区大青叶蝉Cicadella viridis(L.)的发生为害进行了调查。该害虫在阿勒泰地区1年发生2代,以卵在杨树、柳树等树干和枝条表皮内越冬。成虫5月上旬羽化后一直到9月下旬在林间草地为害,8月下旬或9月上旬雌成虫在产卵过程严重危害树皮,尤其对人工幼林、新造林和苗圃危害非常严重。目前大青叶蝉在当地每年发生面积达1万hm2。为尽快控制其为害,提出了防治建议。

Occurrence of Cicadella viridis and control methods in Altay, Xinjiang

Occurrence of Cicadella viridis (L.) in Altay Region, Xinjiang Autonomous Region, was observed. The insect pest has 2 generations per year and overwinters as eggs in surface layer of trunks and twigs of Poplar and Willow trees in this area. Adults endangered grass and forest from early May to late September and female adults laid eggs in branches of trees in late August or early September and caused serious damages of barks. The occurrence area of the pest was about 10 000 hm~2. In order to prevent damages of C. viridis, relative control methods were proposed.