立筒库群粮温变化规律初探

THE PRIMARY STUDIES ON STORED GRAIN TEMPERATURE CHANGE RULE IN STORAGE SILO GROUP

本文以重庆市上桥粮食中转库立筒库群1986年9月至1988年3月的测温资料为基础,从粮难生态系统角度,在纵横两个方面探讨了筒仓温度变化的规律.结果表明:筒仓4米以下及24米以上粮温变化较大,最易受大气温度影响,在4-24米的中部,粮温十分稳定,一年四季受大气影响很小,且越靠近中心部位,粮温变化越小.由于筒仓粮堆是一个稳定的生态系统,大气与粮温在最高温度的出现上,有明显的时滞现象,上下部滞后1个月,中部滞后3个月.

In this paper, the change rule of stored grain temperature in the grain silo was preliminarily studied with the theories of stored grain ecosystem in vertieal and horizontal based on the temperature data in the silo group at Chongqing Shangqiao grain transfer store in 1986.9-1988.3. The results indicated that the stored grain temperature of the parts below 4 metres and over 24 metres high of silo was mostly influenced with atmos phere, and their changes were very obvious. In the range of 4-24 metres, the grain temperature was very stable during the whole year, and the more centrial part was, the more stable the temperature was. Because of stored grain is a stable ecasystem, there is an obvious time lag at the occurrence of highest temperature between the stored grain and atmosphere. The temperature below 4 metres and over 24 metres of the silo hight lagged behind the temperature of atmosphere for one month and the temperature at the central part between the two parts lagged behind the temperature of atmosphere for three months.