中文摘要：

小麦储藏过程中,温度和水分是安全储粮的关键因素。迄今为止,相关研究人员设计了多种数学模型来预测通风过程中小麦堆的温度和水分,然而这些模型一般需要占用大量的内存且计算周期很长。基于局部热质平衡原理采用Fortran程序设计了一套新的数学模型,有效地解决了这些问题。通过对不同通风情况下粮堆温度和水分变化的模拟研究,探索了粮堆通风过程中温度和水分变化的一般规律,并且首次提出R值（粮层内实际传递的水分与在平衡状态下传递的水分之比）,使水分传递更加接近实际情况,通过与试验结果的比较,验证了该模型的准确性与可行性,对以后指导安全储粮具有非常重要的意义。

英文摘要：

The temperature and moisture content are critical factors for safety wheat storage. The researchers have designed a variety of mathematical models to predict the temperature and moisture content changes of wheat during ventilation, which generally take up a lot of memory and time. This problem can be solved effectively by a new mathematical model based on local heat and mass balance principle and Fortran program. Through the simulation research of grain temperature and moisture changes in different ventilation conditions, the general rule of grain temperature and moisture variation during ventilation was explored in the present study. The R value （the ratio of the actual transfer of moisture in the grain layer and the moisture content in the equilibrium state） was put forward for the first time, which made the water transmission more close to the actual situation. The accuracy and feasibility of the model were verified by comparison with the experimental results. The model established in this study would supply guidance for wheat storage.