立筒仓储粮 ,特别是储存散装小麦 ,由于小麦后熟期呼吸旺盛 ,热量积聚 ,储藏稳定性较差 ,且粮食自动分级导致杂质聚集在减压管附近 ,容易孳生虫害 ,加之粮堆透气性、散热性差 ,因此 ,刚入库的小麦 ,往往在立筒仓粮面以减压管为中心 ,半径 1.5～ 2 .0m ,深度 3～ 5m的范围产生局 Vertical silo grain storage, especially the storage of bulk wheat, due to the respiratory phase after the wheat ripening, heat accumulation, storage stability is poor, and the food automatically grading lead to the accumulation of impurities in the vicinity of the decompression tube, easy to reproduce insect pests, coupled with grain permeability , Poor heat dissipation, therefore, just storage of wheat, often in the silo grain surface to the decompression tube as the center, a radius of 1.5 ~ 2.0m, the depth of 3 ~ 5m range of Bureau