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为解决横向通风系统粮堆覆膜前粮层表面惰性粉防护剂施用问题,通过收集粮面粉粒样本以及粮堆预埋试虫笼的方式,分析惰性粉气溶胶在横向通风系统覆膜前形成的斜向通风气流,在粮堆中扩散和分布特征。实验结果显示粮堆表面不同部位采集点粉粒沉降量无统计学差异,表明斜向气流不影响惰性粉在粮堆表面的均匀分布,可以满足横向通风系统覆膜后对粮堆表层膜下易生虫部位的防护要求。预埋虫笼以及实仓害虫密度监测结果显示对害虫防护效果良好。土耳其扁谷盗的死亡率达到100%,玉米象的死亡率为95%,仓内玉米象密度下降85%。
In order to solve the problem of application of Inert powder protectant on surface of pre-laminating food in horizontal ventilation system, Inert powder aerosol was formed before laminating in horizontal ventilation system Of the oblique ventilation air flow, distribution and distribution in the grain piles. The experimental results show that there is no significant difference in the sedimentation amount of grain in different parts of the surface of the grain pile, indicating that the oblique air flow does not affect the uniform distribution of inert powder on the surface of the grain pile, which can satisfy the requirement that after the transverse ventilation system is coated, Pest site protection requirements. Pre-embedded cages and real-time pest density monitoring results showed that the pest protection effect is good. The death rate of turkey bazer reached 100%, the mortality rate of maize was 95% and the density of corn in the bazaar decreased by 85%.