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粘虫Mythimnaseparata（Walker）是危害黑龙江省东南地区（即牡丹江地区）禾谷类作物的暴食性害虫，在该地区每年发生两代，尤以第一代粘虫发生面积大，危害严重。危害特别的年份，可使部分地块绝产，造成很大损失。而第一代粘虫发生程度年度间差异很大，经验须报准确率往往不
The armyworm Mythimnaseparata (Walker) is a binge-eating pest infesting cereal crops in southeastern regions of Heilongjiang Province (Mudanjiang region). Two generations occur each year in this region, especially the first-generation armyworms. Hazardous special years, some of the plots can be produced, resulting in great losses. The first generation of armyworm occurrences vary greatly between years, and the experience must be reported to the accuracy rate