The experiments showed that the method of surface wind speed could not reflect the concrete distribution conditions of grain impurity and the ventilating eveness of the whole storehouse.

• 试验表明:表面风速法不能反映出粮食杂质的具体分布情况和整个仓房的通风均匀性,静压法和温度法能反映出杂质具体分布情况,但温度法会受到客观环境的限制以及存在滞后性。