谷物粮堆孔隙率35%~55%、热绝缘特性造就其能够传递和保持低温低湿的空气特性。干粮堆平衡相对湿度范围30%~65%抑制螨类和微生物生长,储粮昆虫安全管理的粮堆微气候是17~22℃,在这些粮堆温湿度条件下谷物的含水率13%。粮堆降温通风的目的就是形成粮粒被低温低湿空气包围。 Grain heap porosity of 35% to 55%, the thermal insulation properties to create its ability to transmit and maintain low temperature and humidity of the air characteristics. Dry matter balance relative humidity range of 30% to 65% inhibit the growth of mites and microorganisms, stored grain insects safety management of the grain reactor microclimate 17 ~ 22 ℃, grain moisture content of these piles under the conditions of temperature and humidity 13%. The purpose of the cooling ventilation is to form grains surrounded by low temperature and humidity.