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豆虫(豆天蛾 Clanis bilineata Walker)在山东省年年发生很普遍,据近三年来不完全的统计,全省有102个县市发生,如高青县八个区的统计发生豆虫142,615亩,占总豆地面积93%。豆虫为害严重的,影响产量很大。如1953年嘉祥县八区安居镇张家店村农民葛庆孚2亩豆地,被豆虫吃光叶后,只收到30多斤,减产70%以上。蒲台县三区止河乡2,081亩豆地
Beanworms (Clanis bilineata Walker) occur annually in Shandong Province. According to incomplete statistics in the recent three years, 102 counties and cities in the province have occurred. For example, Mu, accounting for 93% of the total bean area. Beetles serious harm, affecting the yield. For example, in 1953, 2 hectares of peasants in the village of Zhangjiadian, Anji Town, Jiaxiang County, Jiaxiang County, were left to eat more than 30 kilos after they were eaten by bean beetles. The yield was reduced by 70% or more. Puzhi County Sanhe District Township 2,081 acres of land