论文部分内容阅读
大袋蛾学名避债蛾,俗名大蓑蛾、吊死鬼,是对泡桐树危害最大的害虫。一九八二年前后点片发生,危害泡桐树。一九八七年,蔓延到全省,泡桐重点生产区的周口、商丘、平顶山、许昌、郑州、洛阳等市、地暴发成灾。据统计,受害株数达1.5亿株,占全省4亿株泡桐的37.5％。每株树多者有虫上千头,少者也有几百头,蚕食桐叶,严重地区桐叶吃光后还吃幼树树皮,并危害间
Sack moth scientific name shelter moth, common name big moth, hanging haunted ghost tree, is the most harmful pest to the paulownia tree. Something happened before and after 1982, endangering the paulownia tree. In 1987, it spread to the whole province and the key producing areas of Paulownia were Zhoukou, Shangqiu, Pingdingshan, Xuchang, Zhengzhou and Luoyang. According to statistics, the number of affected plants reached 150 million, accounting for 37.5% of the 400 million Paulownia in the province. Each tree more than a worm on the thousands of heads, there are a few who have fewer, euphorbia leaves, serious areas Tong eaten sapling bark, and endangering the room