Contractural arrangement in farmer's professional cooperatives the case of farmer professional cooperatives Affecting factors about the growth of farmer professional cooperative Research on growth and operation mechanism of the farmers' professional cooperatives Research on credit cooperation realization and governance in farmers' professional cooperatives 并列题名：Research on growth and operation mechanism of the farmers' professional cooperatives 共营企业的技术创新战略：以农民专业合作社为例：the case of farmer professional cooperatives