Sustainable Agriculture,Alternate Agriculture and Chinese Eco-agriculture

By comparision of the goal,significance,basic concept,theory and technology of eco-agriculture in China with the goals,theories,contents and methods of "Agricrltural Sustainable Development","Sustainable Agriculture " and "Vertical Agriculture " put forward by scientists abroad the author holds that except the difference in title,there is no essential distinction among them,actually they are only different wording in the same field.