Distribution and Harm of Lasioderma Serricorna Larvae in Tobacco Stacks

The density of Lasioderma serricorna larvaes in tobacco stacks and the loss rate of the tobacco le af were investigated. The results showed that larvaes in the tobacco stacks were in collective distribution and also showed whether there were significant differences in the loss rates of various layers of the tobacco stacks depended on harm degrees. There is a significant correlation between true weight loss rates and investigative values by artificially raising larvae.