不同仓型中食品级惰性粉气溶胶技术防虫效果研究

The Effect of Food-grade Inert Powder Aerosol against Stored Grain Pests in Different Grain Storehouses

采用食品级惰性粉气溶胶技术分别在高大平房仓和砖圆仓进行防治储粮害虫实验,评价惰性粉气溶胶技术在不同仓型中的杀虫应用效果。结果表明:气密性较好的砖圆仓气溶胶分布较为均匀,并能在惰性粉浓度较低的情况下有效遏制虫害的发生,延迟害虫的发生时间;高大平房仓由于气密性略差,表观风速较小,导致惰性粉分布不均匀。实验仓相较于对照仓已达到了防虫治虫的效果,仓内粮食品质未发生明显变化。

The technology of food-grade inert powder aerosol was selected to control stored grain pests in large-scale warehouse and brick silo. The results showed that food-grade inert powder aerosol distributed uniformly in brick silo that had good gas tightness. The pests were kept down effectively at low concentrations. The inert dust aerosol had uneven distributions in large-scale warehouse because of lower apparent wind velocity and poorer gas tightness. Compared with the controlled trials, the barns with food-grade inert dust aerosol had achieved the goal to prevent stored grain pests and have no significant effect on the quality of grain in the warehouse.