Research On Lot-sizing Purchase Model For Fruit And Vegetable With Stock Shortages

In recent years,with the improvement of people's living standards and the change of consumption concept,the production and sales of fruit and vegetable have been increasing year by year.However,behind the high demand and high output,there is high corruption.Due to the product's own characteristics,long-term transportation and storage will deteriorate and damage.In addition,China's cold chain transportation and cold storage operations started late,the network system is not perfect,which in turn aggravated the product's deterioration loss,high loss not only affects the company's revenue,but also conceals the management problems behind it.Based on the theory of lot-sizing purchase of fruit and vegetable,combined with the actual operation of dealers,this paper establishes a lot-sizing purchase model,aiming to find the optimal purchasing strategy for enterprises.First of all,the paper considers that the product will deteriorate from the beginning of storage;Dealers purchase products from suppliers by themselves,and the costs incurred during the purchase is the company itself responsible;based on this,a lot-sizing purchase model that allows stock shortages is established.Suppliers often take various measures to attract dealers to increase the order quantity.Quantity discount is one of the common measures.Therefore,on the basis of the previous article,consider the optimal purchasing strategy of the dealer when suppliers provide quantity discount,and establish a lot-sizing purchase model that allows stock shortages and quantity discount;The model considers non-transient deterioration products,there was a period of fresh-keeping period after storage,and the product began to deteriorate after storage period.The paper studies the procurement problem of the enterprise based on the perspective of fruit and vegetable distributors.The model uses LINGO to solve the model.And the results show that under certain conditions,the optimal procurement cycle and quantity can be obtained with the goal of maximizing the profit of dealers.Then,the validity of the model is verified by numerical examples.The sensitivity analysis of the main parameters is made,and some management enlightenment is obtained by sensitivity analysis.Finally,the paper puts forward a summary and prospect.