The model of low temperature grain storage in large warehouse in north China area was investigated.

According to the environment of ecological areas in China,three typical ecological areas of(cold area,warm area and hot area)low temperature grain storage were divided in this study.

Making use of advantageous time of low temperature in winter and spring,mechanical ventilation for bulk wheat in large storehouse was carried out to descend grain temperature,thereafter,heat insulating and sealing the grain bulks and low temperature grain storage test was carried out.

The green grain storage technology contain the dry storage, low-temperature storage, air-control storage, biological protection, physical protection, and character storage, etc.

It emphatically introduced the application of two kinds of green no-pollution storage techniques (low-temperature storage and modified atmosphere storage) and computer technique, based on analyzing the status and deve.

The energy consumptions of grain low-temperature storage can be reduced greatly by using solar energy cooling system.

It can improve the effect of grain storage in low temperature,reduce the difference between the maximum and minimum temperature limits of grain bulk,and improve stability of the stored grain.

The experience of grain storage in low temperature in large warehouse of Tiexinqiao State Grain Storage is introduced.