Dr. Li Yuxia, a conservation tillage expert and long-term expert for the SADP, attended the conference and introduced Canadas experiences in the development of conservation tillage.

• 中加可持续农业发展项目长期专家保护性农业技术专家李玉霞博士到会并介绍了加拿大保护性耕作发展情况及经验与教训。