Research on Emergency Logistics Model of Agricultural Products Based on Coupling of Petri Net and Blockchain

In this COVID-19 epidemic, due to insufficient awareness of the impact sudden public health emergencies on agricultural logistics at stage, products were left unsold, stocks backlogged, and losses severe. process distribution, we should not only ensure a short time cycle avoid contamination by foreign bacteria, but also pay attention waste human, material, financial resources. Therefore, study mainly adopts combination petrochemical network block chain build an emergency model. This paper first shows operation mechanism petri dish blockchain coupling in form graph then uses culture modelling simulation tool PIPE directly verify construction It is proved that structure overall business system constructed combining Petri net are reasonable, reliable, feasible practical application development. hoped can provide reference direction for logistics.