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抽样调查了烟垛内的烟草甲幼虫虫口密度及损失率。结果表明 ,烟草甲幼虫在烟垛内呈聚集分布 ,烟垛不同层间的损失率是否有显著性差异 ,取决于危害程度的大小。通过人工饲养烟草甲 ,得出实际重量损失率与调查重量损失率之间存在显著相关性。
Sampling surveyed the density of tobacco larvae in the stack and the loss rate. The results showed that the larvae of N. tabacum accumulated in the stack, and there was a significant difference in the loss rate between different layers of the stack, depending on the severity of the damage. By feeding Nicotiana tabacum, it is concluded that there is a significant correlation between the actual rate of weight loss and the survey weight loss rate.