以企业生产系统整体为对象，分析了离散型生产系统物流占用量变化特点，以生产系统整体效益最大化为目标，建立了价格折扣条件下的经济订货批量、经济生产批量、最优销售价格折扣率的新算法，为生产系统物流批量优化提供了新的依据

For the whole production system of an enterprise, the characteristics of material flow in discrete production system are analyzed. As the target is maximize the benefit of the system, a new algorithm is presented which includes determining economic order quantity, economic production batch size and the optimal rate of product price discount. The new basis to optimize the material flow batch size in integral production system is provided.