摘要
1 INTRODUCTION This special issue contains a collection of papers dealing with various aspects of Integrating livestock and crop production systems in different parts of the world.Drafts of some papers were presented and discussed at a 2-day international workshop in Quzhou,Hebei,China,during October 9-12,2019.The workshop was combined with a 2-day field trip to visit dairy and poultry farms and rural villages in Hebei.
