贮粮害虫一般在环境温度降到0℃以下就会全部冻僵。连续低温4天,大部分害虫就会冻死。具体做法是:在寒冷的冬天把有虫的粮食全部移到室外摊成6～10厘米厚,任其自然冷冻。冷冻期间要经常翻动,气温在-10℃以下,经20小时冷冻即可入仓。如果温度达不到-10℃以下,冷冻时间可以适当延长。冷冻后的粮食要趁冷入仓,密闭贮藏。粮仓内的各种用具在粮食冷冻时,也要在室外将虫子清理干净。以免藏 Grain pests are generally frozen at ambient temperatures below 0 ° C. Four days in a row, most pests will freeze to death. The specific approach is: in the cold winter all the food moved to the outdoor stalls spread 6 ~ 10 cm thick, let it freezer. Frozen during the regular flip, the temperature below -10 ℃, 20 hours after freezing can warehousing. If the temperature does not reach below -10 ℃, freezing time can be extended. Frozen grain to take advantage of cold warehousing, closed storage. All kinds of utensils in the granary in the food frozen, but also in the outdoors will be cleaned up bugs. To avoid possession