Now many research of supply chain coordination are based on fixed yield. But there are numerous examples
where a production system has a random yield in real world. Therefore, a single-period, unreliable yield agriculture supply
chain is analyzed. Firstly, a mathematical model is established aiming at the maximization of expected revenue. Then the
optimal planned output is established under centralized decision making. A risk-sharing contract is designed to coordinate
the supply chain. Finally, a corresponding example is presented to illustrate the rationality of the proposed theory.