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油桐尺蠖是湖南油桐林一大食叶害虫。1991年以来,在株洲、长沙等地的园林内逐渐蔓延成灾。据调查,1991年株洲市石峰公园发生油桐尺蠖450亩,其中严重受害150亩;1992年发展到2350亩,其中严重受害1300亩,死亡树木150亩。受害的树木种类有樟树、檫木、白玉兰、法国梧桐等35种,仅洋玉兰、水竹、紫竹没有受害。被害树木叶片残缺不齐,严重影响环境美观。 1992年7月上旬,在石峰公园随机取样300株树木,在树菊1.5米范围内挖蛹调查。有蛹株率为95.8％,蛹密度平均每株79.6
Tung oil palm is a large oil leaf insect pest forest. Since 1991, it has gradually become a disaster in gardens in places such as Zhuzhou and Changsha. According to the survey, in 1991, Zhuzhou Shifeng Park took a turnip size of 450 mu, of which 150 mu was seriously affected. In 1992, it developed to 2,350 mu, of which 1,300 mu were seriously injured and 150 mu were dead trees. Tree species suffer camphor tree, Alder, Magnolia, Platanus and other 35 species, only magnolia, water bamboo, Zizhu did not suffer. Torn tree leaves incomplete, seriously affecting the beautiful environment. In early July 1992, 300 trees were randomly sampled in Shifeng Park and pupae were collected within a radius of 1.5 meters. Pupa strain rate was 95.8%, average pupal density of 79.6 per plant