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阔叶林木的食叶害虫主要有刺蛾(黄刺蛾、绿刺蛾、扁刺蛾)、舟蛾(扇舟蛾、小舟蛾、分月扇舟绒)、黄卷叶螟等。正常年份,这些害虫夏季进入老熟幼虫期,部分开始化蛹,虫株率80%以上,平均株虫口密度20只左右,个别地区株虫口密度可能超百只,一般在立秋前后形成以刺峨第二代,舟蛾、黄卷叶螟第三代为主的食叶害虫为害高峰期。
Broadleaved forest leaf insects are the main larvae (yellow thorn moth, green moth, flat moths), moths (finches moths, small moths, sub-monthly fleet velvet), yellow leafworm and so on. In normal years, these pests enter mature larvae stage in summer and partially begin to pupate. The strain rate of pest is above 80% and the average population density is about 20. The population density of bugs may exceed 100 in some areas, and generally form around the beginning of autumn The second generation, the boat moth, yellow leaf roller the third generation of leaf-eating pests damage peak.