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粮层阻力是设计储粮机械通风系统的一项重要参数。本文主要分析了粮堆高度对粮层阻力的影响，通过试验进行实测，并采用多元回归的方法，得出了新的经验公式P＝ahbvc。
Grain layer resistance is an important parameter in the design of grain storage mechanical ventilation system. This paper mainly analyzes the influence of grain heap height on the resistance of grain layer. The experiment is used to measure the grain height, and the multivariate regression method is used to obtain the new empirical formula P = ahbvc.