机械通风是一项安全储粮的重要技术措施,它既能降低储粮温度,利于低温保管,又能降低水份,增进储粮的稳定性,从而有利于抑制和消灭害虫的繁育,并保持粮食的新鲜度。同时通风降温时无需搬动粮食,还可以减少粮食损失,减少劳动强度,节约劳力和费用,而且设备简单,投资少,操作简便,深受广大保粮人员的欢迎。一、一年来常规散装储粮粮温变化情况上海郊县在常规条件下保管粮食,即使到了冬天害虫仍能照常发生、繁殖和危害。主要原因是害虫长期生活在比较稳定的仓房内小气候条件下,几乎受不到强烈的日光、风、雨、 Mechanical ventilation is an important technical measure for grain storage. It not only can reduce the temperature of stored grain, but also can keep it at low temperature, reduce the moisture and increase the stability of grain storage, which can help to restrain and eliminate the pest breeding and maintain Freshness of food. At the same time, ventilation and cooling do not need to move food, you can also reduce food losses, reduce labor intensity, labor-saving and cost savings, and simple equipment, low investment, easy operation, welcomed by the majority of food security staff. First, the past year, the conventional grain storage grain temperature changes Shanghai suburbs under the custody of food under normal conditions, even in winter pests can still occur as usual, reproduction and endangering. The main reason is that the long-term pests live in relatively stable barn in the microclimate conditions, which are hardly affected by intense sunlight, wind, rain,