Our research implies the contract choice is determined by risk attitude held by the two parties and production risk level without opportunism and market risk.

• 分析表明，在不存在机会主义行为或市场风险为零的情况下，“龙头”企业和不同农户之间合约的选择取决于双方对风险的态度和农业项目生产风险的大小。